Which of the solutions have greatest osmotic pressure 30% sucrose 60% sucrose or 30% magnesium sulfate?

Answers

Answer 1
Osmotic pressure is the minimum amount of pressure a solution must exert in order to prevent from crossing a barrier by osmosis. Solute molecules have difficulty crossing semipermeable membranes, so the more solutes that are in a solution, the higher the osmotic pressure will be. Between 30% sucrose and 60% sucrose, 60% sucrose will have a greater osmotic pressure than 30% because it has a higher percentage of solutes. However, since sucrose has a higher potential to cross semipermeable membranes and is more absorbable than magnesium sulfate, magnesium sulfate would have a higher osmotic pressure than 60% sucrose even though 60% sucrose has higher molecules.
Answer 2

Final answer:

The solution with the greatest osmotic pressure depends on the total concentration of solute particles. While a 60% sucrose solution has a high concentration, the dissociation of magnesium sulfate in a 30% solution increases its total solute particle concentration, potentially giving it a higher osmotic pressure when considering its van 't Hoff factor.

Explanation:

The question asks which of the solutions has the greatest osmotic pressure: 30% sucrose, 60% sucrose, or 30% magnesium sulfate. Osmotic pressure is directly proportional to the concentration of solute particles in a solution. While a higher percentage indicates a more concentrated solution, the key factor in determining osmotic pressure is the number of solute particles in solution, not just the concentration of the solution itself.

Sucrose is a non-electrolyte and does not dissociate in water, meaning a 30% or 60% sucrose solution will provide a straightforward concentration of molecules. Magnesium sulfate, on the other hand, is an electrolyte and will dissociate into magnesium and sulfate ions, effectively increasing the number of solute particles in the solution.

Therefore, even though the sucrose solution at 60% is more concentrated than the 30% magnesium sulfate solution, the dissociation of magnesium sulfate into ions means that the 30% magnesium sulfate solution may actually have a greater total concentration of solute particles, leading to a higher osmotic pressure. However, to accurately determine which solution has the highest osmotic pressure, one must consider the molar concentration of particles (ions for magnesium sulfate and molecules for sucrose) and the van 't Hoff factor (i), which accounts for the dissociation of ions in solution.


Related Questions

G brønsted-lowry proton transfer reaction, hydroxide functions as a/an ______.

Answers

In a bronsted lowry proton transfer reaction, the hydroxide functions as a/an proton acceptor.

Bases are the opposite of acids. Bases are basic since they take or accept protons. For example, a Hydroxide ion can accept a proton to form water.

Answer:

Base

Explanation:

A Brønsted-Lowry acid is simply a compound that supplies a hydrogen ion in a reaction. A Brønsted-Lowry base on the other hand, is a compound that accepts a hydrogen ion in a reaction.

Thus, the Brønsted-Lowry definitions of an acid and a base focus on the movement of hydrogen ions in a reaction, rather than on the production of hydrogen ions and hydroxide ions in an aqueous solution.

The hydroxide ion in these compounds accepts a proton (Hydrogen ion) from acids to form water: This means shydroxides functions as a base.

A 13.2 mL rock weighs 47.6 g. Determine it's density. (Show ALL Work)

Answers

The formula of density is;Density = Mass / VolumeDetermine the given:Mass = 47.6 gVolume = 13.2 mLSolution:D = Mass / VolumeD = 47.6 g / 13.2 mLD ≈ 3.61 g/mLSo, the density we get is approximately 3.61 g/mL

Answer: The density of rock is 3.60 g/mL

Explanation:

To calculate density of a substance, we use the equation:

[tex]\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}[/tex]

We are given:

Mass of rock = 47.6 g

Volume of rock = 13.2 mL

Putting values in above equation, we get:

[tex]\text{Density of rock}=\frac{47.6g}{13.2mL}\\\\\text{Density of rock}=3.60g/mL[/tex]

Hence, the density of rock is 3.60 g/mL

How many xenon atoms are contained in 2.36 moles of xenon? 3.92 x 1024 xenon atoms 2.55 x 1023 xenon atoms 1.42 x 1024 xenon atoms 7.91 x 1025 xenon atoms 1.87 x 1026 xenon atoms?

Answers

The number of atoms can be calculated by multiplying the number of moles with the Avogadros number. The Avogadros number is 6.022 x 10^23 atoms / moles, therefore:

number of atoms = 2.36 moles * 6.022 x 10^23 atoms / mole

number of atoms = 1.42 x 10^24 atoms

 

Answer:

1.42 x 10^24 xenon atoms

Answer:

c

Explanation:

because its c

It takes 26.8 mL of a 0.0700 M NaOH standard solution to neutralize a 250 mL sample of lactic acid (C3H6O3). What mass of lactic acid was dissolved in the sample?

Answers

There is 1 OH- in 1 molecule of NaOH. 
Also, there is 1 H+ in 1 molecule of lactic acid.

So the reaction is simple.
so just equate the moles
moles of OH- in NaOH = moles of H+ in lactic acid
26.8 x 0.07 = 250 x Mole of lactic
Moles of lactic = 0.0075

so mass = 0.0075 x 90.8 =  0.681 g

What is the ratio of [a–]/[ha] at ph 3.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?

Answers

The formula for pH given the pKa and the concentrations are:

pH = pKa + log [a–]/[ha]


Therefore calculating:

3.75 = 3.75 + log [a–]/[ha]

log [a–]/[ha] = 0

[a–]/[ha] = 10^0

[a–]/[ha] = 1

Answer:

[tex]\frac{[A^-]}{[HA]}=1[/tex]

Explanation:

Hello,

In this case, one state the following relationship among the pH, pKa and the [a–]/[ha] ratio for the formic acid:

[tex]\frac{[A^-]}{[HA]}=\frac{Ka}{[H^+]}[/tex]

In such a way, we compute both the concentration of hydrogen ions and the acid's dissociation constant as:

[tex][H^+]=10^{-pH}=10^{-3.75}=1.78x10^{-4}M[/tex]

[tex]Ka=10^{-Ka}=10^{-3.75}=1.78x10^{-4}[/tex]

Thus, the [a–]/[ha] ratio becomes:

[tex]\frac{[A^-]}{[HA]}=\frac{1.78x10^{-4}}{1.78x10^{-4}}\\\frac{[A^-]}{[HA]}=1[/tex]

Best regards.

which of the following would be the SI unit to use in the measuring the temperature of a hot liquid? A: ampere B: Mole C: Kelvin D: celsius

Answers

The answer would be D.

Hey, I know i'm too late but the answer is


C. Kelvin


Kelvin is the correct SI unit used to measure the temperature of substance.


Hope this somewhat helps! :)

When scientists looked at the polarity of bands of rock on either side of the mid-ocean ridges, what did they find? A. that there was no pattern B. that the patterns were different C. that the polarities were at right angles D. that the patterns of polarity matched up on both sides

Answers

I am pretty sure the answer is D. That the patterns of a polarity matched up on both sides.

Answer:

B. that the patterns were different

Explanation:

When the scientist looked at the oceanic ridges at the surface they found on either side were the polarity of bands of rocks as on either side of the oceanic ridges where the positive and negative anomalies.  Being composed of hard and soft rocks, these tend to have been in strips of black and white bands or rocks aligned due to the upwelling of new lava on the sides of the ridges throughout the evolutionary history of the planet. Polarities have also been documented to have been aligned in coordination with earth magnetic poles, Being basaltic these rocks have varying ages as older rocks are found away from the mid-oceanic ridges due to the impact of spreading out of lava or magma.

In order to simulate epipelagic zone conditions in a model aquarium design, what light and temperature conditions would be required?A) Minimal amount of sunlight, warm temperature
B) Minimal amount of sunlight, cold temperature
C)High amount of sunlight, cold temperature

Answers

high amounts of sunlight  cold temperature


A minimal amount of sunlight, and cold temperature is the conditions seen in an aquarium. So the correct option is B.

What is an aquarium?

Aquarium, freshwater or marine receptacle for aquatic animals, or a facility where a group of aquatic organisms is shown or researched

Many of the world's major cities now feature both public and commercial aquariums. Another category includes aquariums that primarily function as research facilities. Among the most well-known are those at Naples, the Oceanographic Museum of Monaco, the Plymouth Marine Laboratory in England, and the Scripps Institution of Oceanography in La Jolla, California. Transient aquariums that have functioned as displays at world fairs and expositions are another kind.

Marineland, the first oceanarium or huge marine aquarium, was founded as a private venture near St. Augustine, Fla., in 1938, with a massive communal fish pond and trained dolphins. The Miami Seaquarium is similar. The emphasis in this form of the aquarium is really on large containers, up to 1,000,000 gallons in size, in which a wide variety of fishes are housed together with no attempt to segregate them. Most exhibits at a formal aquarium (for example, the Shedd Aquarium in Chicago) divide the different varieties of fish.

Therefore the correct option is B.

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In the compound sodium methoxide (naoch3), there is ________ bonding

Answers

maybe covalent bonding?

High-purity silicon is obtained using a three-step process. the first step involves heating solid silicon dioxide, sio2, with solid carbon to give solid silicon and carbon monoxide gas. in the second step, solid silicon is converted into liquid silicon tetrachloride, sicl4, by treating it with chlorine gas. in the last step, sicl4 is treated with hydrogen gas to give ultrapure solid silicon and hydrogen chloride gas. part a write balanced chemical equations for the first step involved in this three-step process. express your answer as a chemical equation. identify all of the phases in your answer.

Answers

All of the reactants and products for the reactions are specified, and we just have to write and balance the equations.

For the first reaction, we have:

SiO₂(s) + 2C(s)→ Si(s) + 2CO(g)


The next reaction is:
Si(s) + 2Cl₂(g) → SiCl₄(l)

The third and final step is:
SiCl₄(l) + 2H₂(g) → Si(s) + 4HCl(g)

how is osmosis different from diffusion?

Answers

Osmosis is the movement of water and is always the movement in the membrane. Diffusion does not need a membrane to make molecules and Diffusion is the movement of molecules.
hoped this helped, good luck
Osmosis is pretty much the movement of water and it always moving in the membrane. Diffusion doesn't need a membrane to produce molecules. And, diffusion is the movement of the molecules

A 155g sample of copper was heated to 150.0 degrees Celsius, then placed into 250.0g water at 19.8 degrees Celsius. Calculate the final temperature of the mixture

Answers

once for the water and once for the copper. Set up a table that accounts for each of the variables you know, and then identify the ones you need to obtain. Give me a moment or two and I will work this out for you.

Okay, so like I said before, you will need to use the equation twice. Now, keep in mind that when the copper is placed in the water (the hot into the cold), there is a transfer of heat. This heat transfer is measured in Joules (J). So, the energy that the water gains is the same energy that the copper loses. This means that for your two equations, they can be set equal to each other, but the copper equation will have a negative sign in front to account for the energy it's losing to the water.

When set equal to each other, the equations should resemble something like this:
(cmΔt)H20 = -(cmΔt)Cu
(Cu is copper).

Remember, Δt is the final temperature minus the initial temperature (T2-T1). We are trying to find T2. Since we are submerging the copper into the water, we can assume that the final temperature at equilibrium is the same for both the copper and the water. At a thermodynamic equilibrium, there is no heat transfer because both materials are at the same temperature.

T2Cu = T2H20

Now, the algebra for this part of the problem is a bit confusing, so make sure you keep track of your variables. If done right, the algebra should work out so you have this:

T2 = ((cmT1)Cu + (cmT1)H20) / ((cm)H20 + (cm)Cu)
Insert the values for the variables. Once you plug and chug, your final answer should be
26.8 degrees Celsius.

The Final temperature of the mixture is -10.54 °C.

Heat lost by copper = heat gained by the water

Formula:

CM(z-y) = cm(y-x)................. equation 1

Where:

C = Specific heat capacity of copperM = mass of coppery = Final temperature of the mixturez = Initial temperature of the copperc = specific heat capacity of waterm = mass of waterx = Initial temperature of water

Make y the subject of the equation:

y = (CMz-cmx)/(CM+cm)............. Equation 2

From the question,

Given:

M = 155 g = 0.155 kgm = 250 g = 0.25 kgz = 150°Cx = 19.8°CC = 389 J/kg.Kc = 4182 J/kg.K

Substitute these values into equation 2

y = [(389×0.155×150)-(4182×0.25×19.8)]/[(389×0.155)+(4182×0.25)y = (9044.25-20700.9)/(60.295+1045.5)y = -11656.65/1105.795y = -10.54 °C

Hence, The Final temperature of the mixture is -10.54 °C

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How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layered mixture of?

Answers

That depends on the pH of the water layer. If the water layer is basic or rather just not acidic, it will be in the water layer. If the water layer is acidic, pH 4 or less, it will be in the ether layer.On the question of upper and lower, either has a density of less than one so it will be the upper layer.

You wish to calculate the mass of hydrogen gas that can be prepared from 5.06 g of srh2 and 4.34 g of h2o.

Answers

0.228 g The balance formula for the reaction between SrH2 and H2O is SrH2(s) + 2 H2O(l) ==> Sr(OH)2(s) + 2 H2(g) So for every mole of SrH2 used, 2 moles of hydrogen gas, or 4 moles of hydrogen atoms are released. So let's calculate the molar mass of SrH2 and H2O so see what the limiting reactant is. strontium = 87.62 Hydrogen = 1.00794 Oxygen = 15.999 Molar mass of SrH2 = 87.62 + 2 * 1.00794 = 89.63588 g/mol Molar mass of H2O = 2 * 1.00794 + 15.999 = 18.01488 g/mol Moles of SrH2 = 5.06 g / 89.63588 g/mol = 0.056450609 mol Moles of H2O = 4.34 g / 18.01488 g/mol = 0.240911957 mol Looking at the balanced formula, for every mole of SrH2, it takes 2 moles of H2O. So the limiting reactant will be the SrH2. And for every mole of SrH2 used, we get 4 moles of hydrogen atoms. So 4 * 0.056450609 mole * 1.00794 g/mole = 0.227595307 g Since we only have 3 significant figures, round the result to 3 figures, giving 0.228 g

Which situation would result in a theory being replaced rather than revised?

Answers

"New information is discovered that contradicts the existing theory" is the situation among the choices given in the question that would result in a theory being replaced rather than revised. so the answer would be New information is discovered that contradicts the existing theory. Hope it helped!

Advent of new information that poses challenges to existing theories would result in a theory being replaced rather than revised.

What is theory?

Theory is defined as a thoughtful explanation which is provided for observations which is constructed using scientific methods.The theory brings together many facts and hypothesis.

It is called as theory as it provides some set of assumptions initially which provide description to the field's approach to the subject.These are elementary theorems of a particular theory.It is a rational type of thinking about a set of observations.

They may be scientific,or non scientific or have no discipline at all.There are three types of theory:1) scientific, 2)philosophical and 3) moral.It provides explanation regarding the underlying mechanisms .

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Indicate which reaction will occur faster. explain your reasoning. select the single best answer. solvolysis of 1−chloro−2,2−dimethylpropane or tert−butyl chloride in ethanol

Answers

The tert-butyl chloride in ethanol would surely react faster than the solvolysis of 1-chloro-2,2-dimethyl propane. It is known that both reactions are under the SN2 category so it would be hard for these reactions to occur. However, SN1 reactions are possible because of the ethanol which is a polar solvent. Both would form carbocations but tert-butyl chloride forms a more stable carbocation while the 1-chloro-2,2-dimethyl propane forms a primary carbocation only. 
Final answer:

The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol due to the greater stability of the resulting carbocation.

Explanation:

The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol. The reason is because 1-chloro-2,2-dimethylpropane is a tertiary alkyl halide, which means it has a highly substituted carbon atom attached to the halide. This high substitution stabilizes the transition state via hyperconjugation, thereby significantly accelerating solvolysis.

This implies that the rate of reaction is directly proportional to the stability of the carbocation formed during solvolysis; tertiary carbocations are more stable than secondary ones due to hyperconjugation and inductive effect. Therefore, tertiary halides undergo solvolysis more readily than secondary halides.

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Which action is not an example of work

Answers

Can you post the options to choose from!! :)

If a hydrogen atom gains an electron, then

Answers

The charge of the ion becomes negative. This is because electrons naturally come with a negative charge. Adding one electron will make the charge 1-, as it was a balanced atom before taking on the additional particle.

Using the mass of the proton 1.0073 amu and assuming its diameter is 1.0×10−15m, calculate the density of a proton in g/cm3.

Answers

Answer : [tex] 3.2 X 10^{15} g/cm^{3} [/tex]

Explanation :  To convert amu i.e. atomic mass unit in grams we have the conversion factor as 1 amu = [tex] 1.66054 X 10^{-24} g [/tex]

we know the mass of the proton is 1.0073 amu

So converting it into grams we have to multiply;

1.0073 amu X  [tex] 1.66054 X 10^{-24} g/amu [/tex] = [tex] 1.673 X 10^{-24} g [/tex]

Now, Volume = 1/6πd³ as diameter is given as [tex] 1.0 X 10^{-15} m [/tex] converting it to cm will require to multiply with 100

∴ Volume  = 1/6π [tex](1.0 X 10^{-15}mX 100 cm / 1 m)^{3} [/tex]

Hence, volume =  [tex] 5.236 X 10^{-40} cm^{3} [/tex]

Therefore, Density = mass / volume

∴ Density =  [tex] 1.673 X 10^{-24} g / 5.236 X 10^{-40} cm^{3} [/tex]

Therefore, Density will be [tex] 3.2 X 10^{15} g/cm^{3} [/tex].

The density of a proton in g / cm₃ = 3.19.10⁻¹⁵

Further explanation

Atoms are composed of 3 types of basic particles namely protons, electrons, and neutrons

the mass of the basic particle is expressed in units of atomic mass

This atomic unit uses the standard atomic mass, that is, the C-12 isotope

1 atom C-12 = 12 atomic mass units

1 atomic mass unit = 1/12 x mass 1 C-12 atom

1 unit of atomic mass = 1.66.10 ⁻²⁴ g

the basic particle mass in atomic mass units is:

electron mass = 9.11.10⁻²⁸ g

proton mass = 1.6726.10⁻²⁴ g

neutron mass = 1,675.10⁻²⁴ g

The proton mass is considered to be equal to 1 atomic mass unit and is also considered to be equal to 1 atomic mass unit

1 unit of atomic mass = 1.6726.10⁻²⁴ g = 1.6726.10⁻²⁷kg

Density is a quantity derived from the mass and volume

density is the ratio of mass per unit volume

The unit of density can be expressed in g / cm³ or kg / m3³

Density formula:

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density

m = mass

v = volume

Assume protons as spheres

with a diameter of 1.0 × 10⁻¹⁵m = 1.0.10⁻¹³ cm

then the volume = 4/3 π r³ or 1/6πd³

proton volume = 1 / 6π(1.0 × 10⁻¹³)³

proton volume = 5.23.10⁻⁴⁰

density becomes:

density = mass: volume

density = 1.6726.10⁻²⁴: 5.23.10⁻⁴⁰

density = 3.19.10⁻¹⁵ g/cm³

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The rock had a mass of 500g and a density of 10 g/cm3. What is the volume of the rock

Answers


lets work back. The formula to find density is d= m/v. fill in the values you know.

10 = 500/v

well, we don't need to use a calculator. dividing by ten is going to the left once, and removing one value of ten.

this means you have a volume of 50

Hope this helps! :D


physical or chemical change. metal surface that becomes dull on exposure to air

Answers

It's chemical change. Hope this helps

Which of these activities might involve a chemist?

Answers

B - A chemist might determine the fat content in a candy bar. 

1) Fatty acids stored in candy bars are (in fact) composed of chemical substances.

2) Choice A makes no sense. This activity belongs in the Biology field. Or if you're an animal activist, you might be interested in undertaking this as a hobby.

 3) Choice C is absurd because either you're a Physicist who enjoys an occupation such as this, or you're just plain crazy.

4) Choice D is preposterous because either you're a Meteorologist, or a Geoscientist. Both of which have nothing to do with chemistry. 

The phosphate functional group in the non cyclic amp molecule answer

Answers

The phosphate functional group in the non cyclic amp molecule is acidic hydrogens.

AMP is a nucleotide which stands for Adenosine monophosphate and it is also known as 5'-adenylic acid. It can exist as a cyclic adenosine monophosphate molecule and non cyclic adenosine monophosphate.

What is the effective nuclear charge experienced by the 2p and 3p electrons of a chlorine atom, respectively?

Answers

Effective nuclear charge by 2p = 13.35

Effective nuclear charge by 3p = 6.1

Further explanation

The effective nuclear charge is the nuclear charge which is influenced by the shielding effect of electrons

The effective nuclear charge (Zeff) can be formulated as:

[tex]\large{\boxed{\bold{Z_{eff}\:=\:Z\:-\:S}}}[/tex]

with

Z = nuclear charge = atomic number

S = shield constant

Shielding constants are constants that are generated from the core attraction of electrons in the inner skin

Rules for calculating shield constants

1. Electrons in orbitals are grouped according to skin

/ 1s / 2s, 2p / 3s, 3p / 3d / 4s, 4p / 4d / 4f / 5s, 5p / 5d / 5f /

2. Electrons to the right of the electron studied by shield constants = 03. The electron to the left of the electron is studied by its shield constant:

* Electrons in the same shell shielding effects = 0.35

* Electrons in the skin have deeper shielding effects = 0.85

* Electrons in the skin are deeper than shielding effects = 1.00

On Cl atom which have electron configurations:

1s² 2s² 2p⁶ 3s² 3p⁵

1. if we view the initial charge at 2p then the configuration

1s² 2s² 2p⁶

the electron to the right of 2p does not have a shielding effect

so the shield constant:

S = 0.35. 8 + 0.85.1

S = 3.65

Zeff = Z - S

Zeff = 17 - 3.65 = 13.35

2. if we view the initial charge at 3p then the configuration

1s² 2s² 2p⁶ 3s² 3p⁵

because 3p⁵ then only 4 electrons are counted so there are 2 + 4 = 6 electrons in the skin 3

so the shield constant:

S = 0.35 x 6 + 0.85 x 8 + 1 x 2

S = 10.9

Zeff = 17-10.9 = 6.1

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The effective nuclear charge can be calculated from Slater's rules.

According to Slater's rule, the effective nuclear charge is obtained from;

Zeff = Z - S

Zeff = effective nuclear charge

Z = nuclear charge

S = screening

Note that;

Electrons in ns and np orbitals have S = 0.35Electrons in the penultimate shell (n - 1) has S = 0.85Electrons in (n - 2) shell has S = 1.00

For a 2p chlorine electron;

Chlorine has electron configuration, 1s2 2s2 2p6 3s2 3p5

S = 7(0.35) + 2(0.85) = 2.45 + 1.7 = 4.15

The total nuclear charge of chlorine Z = 17

Zeff = 17 - 4.15

Zeff = 12.85

For the 3p electron;

S = 6(0.35) + 8(0.85) + 2(1.00)

S = 2.1 + 6.8 + 2 = 10.9

Zeff = 17 - 10.9

Zeff = 6.1

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If you added 1.0 ml of the unknown pb(no3)2 to a test tube, what is the amount of hi in ml

Answers

9898978979777898987878788787878778788887878787787


A curve showing the relationship between temperature and time for a given amount of liquid heated a constant rate is a __________ curve. a. heating c. liquid b. molar d. energy

Answers

The answer you are looking for is: A: Heating Curve. Good Luck!
Answer: A curve showing the relationship between temperature and time for a given amount of liquid heated at constant rate is a heating curve.

This is the option a. heating.

The increase of temperatue as result of heating may be ploted to show the changes. This increase of temperature related with the heat depends of the heat capacity of the substance. For a fixed amount of heat, substances with high heat capacity exhibit a lower increase in temperature than substances with low heat capacity.

How many molecules are in 2.50 moles of SO2

Answers

Every compound or element has a fixed number of molecules per mole. This is given by the Avogadros number which is about 6.022 x 10^23 molecules per mole. Therefore:

 

molecules = 2.50 moles * (6.022 x 10^23 molecules / mole)

molecules = 1.5055 x 10^24 molecules of SO2

Final answer:

To find the number of molecules in 2.50 moles of sulfur dioxide (SO₂), multiply 2.50 moles by Avogadro's number (6.022 x 10²³ molecules/mole), resulting in 1.506 x 10²⁴ molecules of SO₂.

Explanation:

The question of how many molecules are in 2.50 moles of SO₂ (sulfur dioxide) can be answered by using Avogadro's number, which is a key concept in chemistry. Avogadro's number (6.022 × 10²³) represents the number of entities, in this case, molecules, in one mole of a substance.

Therefore, to find out how many molecules are present in 2.50 moles of SO₂, we multiply the moles of SO₂ by Avogadro's number.

2.50 moles of SO₂ × 6.022 × 10²³ molecules/mole = 1.506 × 10²⁴ molecules of SO₂.

A student sets up two reactions. reaction 1 uses 0.130 mol/l of reactant, and reaction 2 uses 0.440 mol/l of reactant. how many times faster is reaction 2 compared to reaction 1?

Answers

Reaction 2 is 3.385 times faster compared to reaction 1

Further explanation

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.

Can be formulated:

Reaction: aA ---> bB

[tex]\large{\boxed{\boxed{\bold{v~=~-\frac{\Delta A}{\Delta t}}}}[/tex]

or

[tex]\large{\boxed{\boxed{\bold{v~=~+\frac{\Delta B}{\Delta t}}}}[/tex]

A = reagent

B = product

v = reaction rate

t = reaction time

For A + B reactions ---> C + D

Reaction speed can be formulated:

[tex]\large{\boxed{\boxed{\bold{v~=~k.[A]^a[B]^b}}}[/tex]

where

v = reaction speed, M / s

k = constant, mol¹⁻⁽ᵃ⁺ᵇ⁾. L⁽ᵃ⁺ᵇ⁾⁻¹. S⁻¹

a = reaction order to A

b = reaction order to B

[A] = [B] = concentration of substances

Reaction 1 uses 0.130 mol / l of reactant, and reaction 2 uses 0.440 mol / l of reactant.

Assuming a reaction order is one then:

reaction rate 1 =

v₁ = k. [A]

v₁ = k. 0.130

reaction rate 2 =

v₂ = k. [B]

v₂ = k. 0.440, so that

[tex]\frac{v_2}{v_1}~=~k.\frac{0.440}{0.130}[/tex]

[tex]\frac{v_2}{v_1}~=~3,385[/tex]

v₂ = 3.385. v₁

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Keywords: reaction rate, reaction order, molar concentration, products, reactants

Final answer:

The rate of reaction 2 is approximately 3.38 times faster than reaction 1, assuming that it is a first-order reaction where the rate is directly proportional to the concentration of the reactant.

Explanation:

The student is comparing the rates of two reactions with different initial concentrations of reactants. To determine how many times faster reaction 2 is compared to reaction 1, it is essential to understand the order of the reaction. In this context, it is suggested that the reaction is first order since rates of reaction are directly proportional to the concentration of the reactant, which follows the rate law rate = k[Reactant]. Therefore, if we double the concentration of the reactant, the reaction rate doubles, which is a characteristic of a first-order reaction. Hence, without needing explicit rate constants or measurements, we can infer that if the concentration of reactant in reaction 2 is 0.440 mol/L, which is roughly 3.38 times the concentration in reaction 1 (0.130 mol/L), the rate of reaction 2 would also be 3.38 times faster than reaction 1.

If you add meoh to cocl2(alc)2, the cocl2(alc)2 concentration will change. what are the two reasons for this concentration change?

Answers

There are two reasons that account for the change in concentration. One is by the physical change and second is by the chemical change. The physical change refers to the mixture of the two compounds. The concentration is the amount of that certain substance to the whole mixture. Since the mixture increases because you add them up, the concentration decreases. Second, these compounds react with each other once they interact. Hence, their amounts would be consumed in order to produce the products.

Any proposed solution of a rational equation that causes a denominator to equal​ _______ is rejected.

Answers

Any rational equation that the denominator is equal to zero will be rejected. The denominator of the rational equation must never be equal to zero. These are called Extraneous Roots and this must be rejected. The extraneous roots appear when we are solving an equation in a perfectly correct way, because certain operations have more than one solution.

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