if you want to test whether a rock has calcite in it you could use the ?

Answers

Answer 1
You could use the "Vinegar Test." Students can use vinegar instead of hydrochloric acid for an introduction to the acid test which tests calcite.  

Related Questions

A piece of metal has a volume of 38 cm and a mass of 277 g calculate the density of the metal

Answers

Density
=mass÷volume
=277÷38
=7.29 g/cm3

The density of the metal would be equal to 277/38 = 7.28 g/cm^3

What is density?

The ratio of an object's matter content to its volume is compared using the concept of density. High density describes an entity that contains a lot of matter in a small space. The density of a substance demonstrates the substance's density in a certain region.

Mass per unit volume is the definition of density for a substance. In essence, density is an indicator of how closely together matter is arranged. It is one of an object's special physical characteristics. Greek scientist Archimedes was the first to understand the density principle.

Knowing the formula and the corresponding units will make calculating density simple. Density can be symbolized by the letter D.

Therefore, the density of the metal is 7.28 g/cm^3.

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How many ammonium ions and how many sulfate ions are present in an 0.370 mol sample of (nh4)2so4?

Answers

The number of ions will be determined by the molecule component. In this question, (nh4)2so4 contain two ammonium ion from (NH4)2 and one sulfate ion from SO4. Then the calculation would be:

Ammonium ion: 2/1 x 0.37 mol= 0.74 mol
Sulfate ion: /1 x 0.37 mol= 0.37 mol

In a 0.370 mol sample of [tex](NH_4)_2SO_4[/tex], there are 0.740 mol of [tex]NH_4^+[/tex] ions and 0.370 mol of [tex]SO_4^{2-}[/tex] ions.

To determine the number of ammonium ([tex]NH_4^+[/tex]) and sulfate ([tex]SO_4^{2-}[/tex]) ions in a 0.370 mol sample of [tex](NH_4)_2SO_4[/tex], we use the stoichiometry of the compound. Each unit of ammonium sulfate contains two ammonium ions and one sulfate ion.

We calculate the number of ions as follows:

For ammonium ions: 0.370 mol of [tex](NH_4)_2SO_4[/tex]x 2 mol of [tex]NH_4^+[/tex] per mol of [tex](NH_4)_2SO_4[/tex] = 0.740 mol of [tex]NH_4^+[/tex]For sulfate ions: Since there is one sulfate ion per formula unit, we have 0.370 mol SO42-.

The sample therefore contains 0.740 mol of [tex]NH_4^+[/tex] ions and 0.370 mol of [tex]SO_4^2^-[/tex] ions.

A teacher makes the following statement.

“Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.”

What topic is the teacher most likely talking about?

Answers

Distillation of a mixture

Answer:

Distillation of a mixture

Explanation:

When making a guess and retesting this information a theory or _____ may be formed which explains why something has occurred or what it may look like.

Answers

When making a guess and retesting this information a theory or hypothesis may be formed which explains why something has occurred or what it may look like. A hypothesis is a statement or fact that we wish to prove or disprove using scientific methods under certain controlled conditions. Hence the guess or assumption is authenticated with the valid reasoning of statistical theory.

Is the world really going to end Saturday

Answers

Nope, this was confirmed by NASA senior space scientist David Morrison to be a hoax.
There's no such thing as Planet X / Nibiru.
There is no brown dwarf planet on a crash course with Eath.

While in Europe, if you drive 119 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0 mi/gal ? Assume that 1euro=1.26dollars.

Answers

At 119 km/day x 7 = 833 km. 22.0 mi/gallon then there is 1.6 km/mile so it is 22.0 x 1.6=35.2km/gallon and one US gallon is 3.785 liters so 35.2/3.785= 9.3km/litre and 833 km/9.3=83.56 litres x 1.10 euros/litre= 98.53 euros x 1.26 = $124.14 US total cost. 

The weekly cost of gas for driving 119 km per day in Europe, considering the car's gas mileage of 22 mi/gal and gas cost of 1.10 euros per liter, is approximately $123.45 when converted from euros.

To calculate the weekly cost of gas while driving in Europe, we need to figure out the total number of kilometers driven in a week, convert this distance to miles, and then determine how much gas would be used, taking into account the car's gas mileage, and finally convert the cost to dollars.

Firstly, the student will drive 119 km per day. Over a week, this amounts to:

119 km/day × 7 days/week = 833 km/week.

Next, we convert kilometers to miles using the conversion factor 1 km ≈ 0.621371 miles:

833 km × 0.621371 mi/km ≈ 517.781 mi/week.

Given the car's gas mileage of 22.0 mi/gal, the amount of gas needed for the week is:

517.781 mi / 22.0 mi/gal = 23.535 gal/week.

Now we convert gallons to liters since gas in Europe is sold by the liter. There are approximately 3.78541 liters in one gallon:

23.535 gal × 3.78541 liters/gal ≈ 89.071 liters/week.

With the cost of gas at 1.10 euros per liter, this totals:

89.071 liters × 1.10 euros/liter = 97.978 euros/week.

Finally, we convert euros to dollars:

97.978 euros × 1.26 dollars/euro = $123.452.

Therefore, the cost of gas for one week is approximately $123.45.

Which shows an electron being ejected from the atom? explain your reasoning?

Answers

incomplete question. The diagram or figure is not given so we cannot answer this question because the diagram of an electron being ejected from an atom is not given so we cannot answer this question. First you should provide a valid diagram to answer this question.

Hydrides are compounds made up of hydrogen and metal. Why ammonia has the highest boiling point among the hydrides of elements in Group 15? 

Select one:

a. The bonds in ammonia are polar

b. The size of the nitrogen atom is the smallest

c. The ammonia molecules is the smallest among the hydrides of the elements in Group 15
 

d. Hydrogen atoms bonded to the nitrogen atom can form hydrogen bonds

Answers

The correct option is D.
The hydrogen atoms that are attached to the nitrogen atom in the ammonia molecule are capable of forming hydrogen bond. The hydrogen bond that exist in the ammonia molecule is the reason why it shows higher boiling point compare to the other hydrides. Hydrogen bond occur in ammonia because ammonia is one of the most electronegative elements. 

Choose the correct name for the following compound: H2S

Answers

Answer : The correct name of [tex]H_2S[/tex] compound is, Hydrogen sulfide.

Explanation :

As we know that, [tex]H_2S[/tex] is a covalent compound in which the sharing of electrons takes place between hydrogen and sulfur. Both the elements are non-metals and hence, will form covalent bond.

The nomenclature of covalent compound is given by:

The less electronegative element is written first.

The more electronegative element is written then, and a suffix is added with it. The suffix added is '-ide'.

If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on..

In [tex]H_2S[/tex], hydrogen is an electropositive element and sulfur is an electronegative element.

So, the correct name for [tex]H_2S[/tex] is hydrogen sulfide.

The compound H2S is accurately named as hydrogen sulfide. It's a poisonous, colorless gas often associated with the smell of rotten eggs, seen in hot springs and during the oxidation of natural gas.

The correct name for the compound H2S is hydrogen sulfide. In the case of binary compounds like this one (compounds made of two different elements), the first element is usually named fully while the second element is named as though it is an anion, which usually ends in -ide, hence 'sulfide' in hydrogen sulfide. Hydrogen sulfide is a toxic, colorless gas that exhibits the smell of rotten eggs. Nit causes this smell in hot springs and in the process of oxidizing natural gas.

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Zinc Mass If a 1.85 g mass of zinc produces 475 mL of gas and your balloon weighs 0.580 g and the room temperature is 21.5°C. Calculate the amount of zinc needed to produce enough gas to get your balloon airborne by adding 1 mL to the required balloon volume so that its density is less than that of the surrounding air. (Hint: Complete balloon volume calculation as you did in Question 2 above)

Answers

The weight of the balloon is irrelevant because it is the gas that lifts it in the air. We are already given with the required volume, so we use this instead. The atomic weight of zinc is 65.38 g/mol. Assuming ideal gas behavior,

PV=nRT
P(475 mL)(1 L/1000 mL) = (1.85/65.38)(0.0821 L·atm/mol·K)(21.5 + 273)
P = 1.44 atm

Then, we use this pressure and the volume to find the moles of zinc.

(1.44 atm)(475 mL+1 mL)(1 L/1000 mL) = n(0.0821 L·atm/mol·K)(21.5 + 273)
Solving for n,
n = 0.02836 moles of zinc

During an ige-mediated hypersensitivity reaction, which leukocyte is activated?

Answers

The answer is Eosinophils.

An eosinophil is a type of white blood cell, they help to promote inflammation, playing an important role, because it controls and isolates the site where the disease is located. Also, plays a beneficial role responding to several allergic reactions, asthma, or any infection caused by any parasitic body.

What is the maximum height at which the solvent should condense (in the condenser) during reflux? What might happen if the solvent condenses higher than this?

Answers

i don't know. Please send help, i made this account for verified answers


Answer 1) The maximum height at which the solvent should condense (in the condenser) during the reflux should be halfway up to the condenser.

Explanation : If the solvent molecules exceeds the maximum height of the condenser there may be loss of molecules of the solution. The maximum height is maintained during the reflux so that the volatile molecules travels back to the solution and initiate the reaction process.

Answer 2) If the solvent condenses higher than this, then the solution vapors will go back to the reaction flask and start the reaction much earlier than before.

Explanation : If this is prevented by not allowing solvent vapors to exceed the maximum height of the reflux condenser then reaction will not happen fast or will not start early. Therefore, the condensation of the solution vapors should occur at the maximum height not higher than that.

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

The element carbon (c) has two common isotopes. 98.89% of carbon atoms have 6 neutrons and 6 protons, whereas the other 1.11% has 7 neutrons and 6 protons. using the isotopic composition provided, calculate the average atomic mass of carbon. round your answer to the tenths place.

Answers

Carbon atom has two isotopes
relative abundance of one isotope = 98.89% = 98.89 / 100 = 0.9889
As this isotopes have 6 neutrons and 6 protons, and there sum is equal to the mass of that isotope = 6 + 6 = 12amu
And other isotope have relative abundance = 1.11% = 1.11/100 = 0.0111
And mass of that isotope = 7 neutrons + 6 protons = 13amu
Now, average atomic mass of carbon = (0.9889 x 12) + (0.0111 x 13) =11.8668 + 0.1443 = 12.0111 = 12.0 = 12
Final answer:

The average atomic mass of carbon is calculated based on the relative abundances and masses of its isotopes, carbon-12, and carbon-13, which results in an average atomic mass of approximately 12.01 atomic mass units.

Explanation:

The average atomic mass of an element is calculated based on the masses and relative abundances of its naturally occurring isotopes. In the case of carbon, the two main isotopes are carbon-12 (with 6 protons and 6 neutrons) and carbon-13 (with 6 protons and 7 neutrons), each having different abundances. The atomic mass of carbon-12 is 12 amu (atomic mass units) and it accounts for approximately 98.89% of the carbon. The atomic mass of carbon-13 is 13 amu and it accounts for approximately 1.11% of the carbon. We can calculate the average atomic mass like this: (12 amu x 0.9889) + (13 amu x 0.0111) = 12.01 amu. Therefore the average atomic mass of carbon is approximately 12.01 amu.

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"how many atoms are in 169 g of calcium"

Answers

First calculate the number of moles. Molar mass of Calcium = 40.08 g/mol

 

Number of moles = 169 g / (40.08 g / mol) = 4.217 moles

 

Using Avogadros number, we can get the number of atoms:

Number of atoms = 4.217 moles * (6.022 x 10^23 atoms / moles) = 2.54 x 10^24 atoms

Determine the mass of 2.5 cups of water if the density of water is 1.00 g/cm3 and 1 cup = 240 mL\

Answers

600 grams. 2,5 times 240 yields a result of 600 ml in 2.5 cups. A milliliter is equal to a cubic centimeter of liquid. As water has a mass of 1 gram per cubic centimeter, 600 milliliters of water has a mass of 600 grams.

Which two of the following elements would you expect to be most similar: nitrogen, chlorine, barium, fluorine, and sulfur? 

Answers

Nitrogen clorine flourine and sulfur

Answer:

Chlorine and Flourine

Explanation:

It is important to identify the groups in which the elements being to. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.

Since elements in a group have the same number of valence electrons, they behave similarly in chemistry.

Nitrogen - Group 5

Chlorine - Group 7

Barium - Group 2

Flourine - Group 7

Sulphur - Group 6

This means the most similar elements would be flourine and Chlorine because they are both group 7 elements.

In two or more complete sentences explain how to balance the chemical equation, KClO3 ⟶ KCl + O2 and include all steps

Answers

1KClO3→KCl+O2 (balance k)
1KClO3→1KCl+O2 (balance cl)
2KClO3→2KCl+O2(balance o)
2KClO3→2KCl+3O2

how many pounds does 1.00 quart of mercury weight? its density is 13.6g/mL

Answers

Two steps by inspection 1 qt = 0.25 gallons, 13.6 g/mL = 13.6 kg/L

0.25 gallon x 3.785411784 L/gallon x 13.6 kg/L x 1 lb/0.45359237 kg = 28.374 lb.

Hope this Helps!

1.00 quart of mercury weight approximately 28.4 pounds.

To find the weight of 1.00 quart of mercury, given its density of 13.6 g/mL, follow these steps:

1. Convert quarts to milliliters:

1 quart = 946.35 mL

2. Calculate the mass using density:

Mass = Density × VolumeMass = 13.6 g/mL × 946.35 mLMass ≈ 12,868.76 g

3. Convert grams to pounds:

1 pound ≈ 453.592 gramsMass in pounds = 12,868.76 g / 453.592 g/poundMass ≈ 28.4 pounds

Please answer ASAP! Will mark brainliest:
According to its periodic table entry, how many electrons does nickel have in its valence level?
a.) 2
b.) 8
c.) 16
d.) 28

Answers

Hello There!

The correct answer is A. 2
Valence is the outer shell.

Hope This Helps You!
Good Luck :)
Answer

Option A= 2

Explanation

Atomic Number of Nickel (Ni) = 28

Electronic configuration is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d8

By definition, the highest principle quantum number is the valence shell. In the case of Nickel, n = 4 is the highest QN and contains 2 electrons (max allowed) in the s-orbital.


The phosphate functional group in the non cyclic adenosine monophosphate molecule contains "acidic hydrogens".Explain what this phrase means.

Answers

If you notice, most inorganic acids are HCl, HBr, HI, HF, HCH₃COO, H₂SO₄ and HNO₃. They are acidic in nature because of the presence of acidic hydrogens. These are the hydrogen atoms in the compound that turn into a cation H⁺ when dissociated in an aqueous reaction. 

Tin(ii) fluoride (snf2) is often added to toothpaste as an ingredient to prevent tooth decay. what is the mass of f in grams in 36.5 g of the compound?

Answers

From the periodic table:
molar mass of Sn = 118.71 grams
molar mass of F = 18.99 grams

This means that:
molar mass of SnF2 = 118.71 + 2(18.99) = 156.69 grams

Therefore, 156.69 grams of SnF2 contains 37.98 grams of F. To know the amount of F in 36.5 grams of the compound, we will simply do a cross multiplication as follows:
mass of F = (36.6 x 37.98) / 156.69 = 8.847 grams
Final answer:

The mass of fluorine in 36.5 g of SnF2 is approximately 8.85 g, calculated by finding the fraction of the mass due to fluorine in tin(II) fluoride based on its molar mass and multiplying it by the total mass of the compound.

Explanation:

To calculate the mass of fluorine (F) in grams in 36.5 g of tin(II) fluoride (SnF2), we need to consider the molar mass of SnF2 and the proportion of fluorine within the compound. The molecular weight of SnF2 is approximately 156.7 g/mol (119.7 for Sn and 37.0 for the two fluorine atoms). To find the amount of F in SnF2, we can set up a ratio based on the molar masses:

Molar mass of SnF2: 156.7 g/molMolar mass of F in SnF2: (2 × 19.0) = 38.0 g/mol

Next, calculate the fraction of the mass that is due to fluorine:

(38.0 g/mol F) / (156.7 g/mol SnF2) = 0.2426 (fraction of F in SnF2)

Finally, multiply the fraction by the total mass of SnF2 to obtain the mass of F:

36.5 g × 0.2426 = 8.8549 g F

Therefore, the mass of fluorine in 36.5 g of SnF2 is approximately 8.85 g.

A sugar crystal contains approximately 2.2×1017 sucrose (c12h22o11) molecules. part a what is its mass in mg?

Answers

From the periodic table:
mass of carbon = 12 grams
mass of hydrogen = 1 grams
mass of oxygen = 16 grams
molar mass of surcose = 12(12) + 22(1) + 11(16) = 342 grams

number of molecules = number of moles x Avogadro's number
number of moles = number of molecules / Avogadro's number
number of moles = (2.2x10^17) / (6.02x10^23) = 3.6544 x 10^-7 moles

number of moles = mass / molar mass
mass = number of moles x molar mass
mass = 3.6544 x 10^-7 x 342 = 1.249 x 10^-4 grams = 0.12498 mg

Final answer:

The mass of a sugar crystal with 2.2×1017 sucrose molecules is found by calculating the number of moles and multiplying by the molar mass of sucrose (342.297 g/mol), then converting to milligrams.

Explanation:

To find the mass of a sugar crystal with approximately 2.2×1017 sucrose (C12H22O11) molecules, we need to use the molar mass of sucrose. The molar mass of sucrose is 342.297 grams per mole. Since one mole of a compound contains Avogadro's number (approximately 6.022×1023) of molecules, we can use the following steps to calculate the mass:

Calculate moles of sucrose: moles = number of molecules ÷ Avogadro's number = 2.2×1017 molecules ÷ 6.022×1023 molecules/mole.Convert moles to grams using the molar mass: mass in grams = moles × molar mass of sucrose.Finally, convert the mass from grams to milligrams by multiplying by 1,000, since there are 1,000 milligrams in a gram.

Performing these calculations will give us the mass of the crystal in milligrams (mg).

Draw the structure(s) of all alkane(s) that have 3-6 carbons and does not have secondary or tertiary carbons.

Answers

Final answer:

Here are each alkane and heir structures:

1. Propane (C₃H₈):

CH₃ - CHH₂ - CH₃

2. Butane (C₄H₁₀):

CH₃ - CHH₂ - CHH₂ - CH₃

3. Pentane (C₅H₁₂):

CH₃ - CHH₂ - CHH₂ - CHH₂ - CH₃

4. Hexane (C₆H₁₄):

CH₃ - CHH₂ - CHH₂ - CHH₂ - CH₂ - CH₃

Explanation:

In all of these alkanes, there are no secondary or tertiary carbons, as they have a linear structure without any branching. These structures follow the general formula CnH₂ₙ₊₂, where n is the number of carbon atoms.

Remember that these are just a few examples of alkanes with 3-6 carbons. There can be multiple isomers and variations of these alkanes based on different arrangements of the carbon atoms.

An alkane is a saturated hydrocarbon composed of carbon and hydrogen atoms, with only single covalent bonds between carbon atoms.

To draw the structures of alkanes with 3-6 carbon atoms and no secondary or tertiary carbon atoms, we need to consider the straight-chain (normal) isomers.

A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. what is the molality of salt in a mixture of 2.00 lb of nacl and 12.00 lb of ice if exactly half of the ice melts? assume that all the nacl dissolves in the melted ice.

Answers

Final answer:

The molality of the table salt (NaCl) in the described mixture, where 2.00 lbs of NaCl is mixed with 12.00 lbs of ice (half of which melts), is approximately 5.71 mol/kg.

Explanation:

The question asks for the calculation of the molality of salt (NaCl) in a mixture which involves a 2.00 lb sample of NaCl and 12.00 lb sample of ice that eventually melts to half its quantity. The steps for finding molality in such a scenario involve the conversion of weight measurements to mole measurements and utilize the fact that molality is calculated as moles of solute (NaCl) per kilogram of solvent (water).

Step 1: Convert the amount of NaCl and water (melted ice) from lb to grams. 1 lb is approximately 453.592 grams. So, 2.00 lb of NaCl is 907.185 grams of NaCl and 6.00 lb of water is 2721.55 grams (since half of the 12 lb of ice melts). This needs to be converted to kilogram giving us 2.72155 kg.

Step 2: Convert grams of NaCl to moles. The molar mass of NaCl is approximately 58.44 grams per mole. Therefore, 907.185 grams of NaCl is approximately 15.54 moles.

Step 3: Determine the molality using the formula molality = moles of solute (NaCl) / kg of solvent (melted ice). This gives us a molality of approximately 5.71 mol/kg.

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Calculate the boiling point of a 4.5 m solution of na2so4 in water (assume 100% dissociation, kb (h2o) = 0.52 °c/m)

Answers

In order to determine the change in boiling point, we use the formula:
ΔT = Kb * m * i

Where i is the van't Hoff factor. This factor is found by checking the number of ions formed when the solute is dissolved. This is:

Na₂SO₄ + water ↔ 2Na⁺ + SO₄⁻²

The number of ions formed is 3, so i = 3

ΔT = 0.52 * 4.5 * 3
ΔT = 7.02

The new boiling point is calculated using:
T = T(normal) + ΔT
T = 100 + 7.02


The new boiling point is 107.2 °C

The boiling point of a 4.5 m solution of [tex]\( Na_2SO_4 \)[/tex] in water is [tex]115.6 \( ^\circ C \).[/tex]

The boiling point of a solution is elevated in proportion to the concentration of solute particles in the solution. The relationship between the boiling point elevation [tex](\( \Delta T_b \))[/tex] and the molal concentration of the solute ([tex]m[/tex]) is given by the equation:

[tex]\[ \Delta T_b = i \cdot k_b \cdot m \][/tex]

where:

- [tex]\( \Delta T_b \)[/tex] is the boiling point elevation,

- [tex]\( i \)[/tex] is the van 't Hoff factor, which represents the number of particles the solute dissociates into,

- [tex]\( k_b \)[/tex] is the ebullioscopic constant (for water, [tex]\( k_b = 0.52 \ ^\circ C \cdot kg \cdot mol^{-1} \)),[/tex]

- [tex]\( m \)[/tex] is the molality of the solution (moles of solute per kilogram of solvent).

For [tex]\( Na_2SO_4 \)[/tex], the van 't Hoff factor [tex]i[/tex] is 3, because one mole of [tex]\( Na_2SO_4 \)[/tex] dissociates into three moles of ions (2 moles of [tex]\( Na^+ \)[/tex] and 1 mole of [tex]\( SO_4^{2-} \))[/tex]

Given:

- [tex]\( m = 4.5 \ m \)[/tex] (where 1 m = 1 mol/kg),

- [tex]\( k_b = 0.52 \ ^\circ C \cdot kg \cdot mol^{-1} \),[/tex]

- [tex]\( i = 3 \).[/tex]

We can calculate the boiling point elevation as follows:

[tex]\[ \Delta T_b = i \cdot k_b \cdot m \][/tex]

[tex]\[ \Delta T_b = 3 \cdot 0.52 \ ^\circ C \cdot kg \cdot mol^{-1} \cdot 4.5 \ mol/kg \][/tex]

[tex]\[ \Delta T_b = 3 \cdot 0.52 \cdot 4.5 \][/tex]

[tex]\[ \Delta T_b = 15.6 \ ^\circ C \][/tex]

To find the boiling point of the solution, we add the boiling point elevation to the normal boiling point of water ([tex]100 \( ^\circ C \)[/tex]):

[tex]\[ T_b = T_{b(water)} + \Delta T_b \][/tex]

[tex]\[ T_b = 100 \ ^\circ C + 15.6 \ ^\circ C \][/tex]

[tex]\[ T_b = 115.6 \ ^\circ C \][/tex]

Express the concentration of a 0.0610 m aqueous solution of fluoride, f–, in mass percentage and in parts per million. assume the density of the solution is 1.00 g/ml.

Answers

Assume you have 1 L of solution.
Moles F- = M F- x L F- = (0.0610)(1) = 0.0610 moles F-
0.0610 moles F- x(19.0 g F-/1mole F-) = 1.159 g F- in 1 L of solution
1 L solution x (1000 mL / 1 L) x (1.00 g / mL) = 1000 g of solution
mass % F- = (g F- / g solution) x 100 = (1.159 / 1000) x 100
= 0.1159%
parts per million F- = mg F- /L = 1159 / 1 = 1159 ppm F-
Final answer:

The solution concentration of 0.0610 m aqueous fluoride is 0.1159% by mass and 1159 ppm. These values are calculated using the molarity and molar mass of fluoride and assuming a solution density of 1.00 g/mL.

Explanation:

To express the concentration of a 0.0610 m aqueous solution of fluoride (F−) in mass percentage and parts per million (ppm), given a density of 1.00 g/mL, we need to do some calculations based on the definitions of these concentration units.

First, to find the mass percentage, we use the molarity of the solution (moles of solute per liter of solution) and the molar mass of fluoride (F−, approximately 19.00 g/mol). Since the solution has a density of 1 g/mL, we assume that 1 liter of the solution weighs 1000 g.

The mass of fluoride in 1 L of 0.0610 M solution is:

0.0610 moles/L × 19.00 g/mole = 1.159 g of F−

To express this as a percentage, we divide the mass of fluoride by the total mass of the solution and multiply by 100:

(1.159 g / 1000 g) × 100 = 0.1159%

Now, to convert this to parts per million, we use the fact that 1 ppm equals 1 mg of solute per kg of solution. Considering that 1.159 g is 1159 mg, we have:

1159 mg of F− per 1000 g of solution = 1159 ppm

Therefore, the concentration of the fluoride solution is 0.1159% by mass and 1159 ppm.

Which statement is true about the products of two reactants that combine chemically? A. They are different than the reactants. B. Some products are the same as the reactants. C. One product is the same as a reactant but the other is different. D. Products will spontaneously degrade back to reactants.

Answers

The answer to this question would be: A. They are different than the reactants.

A product of a chemical reaction will be different from the reactant that used to make it. Just because the product is made from reactant, doesn't mean that the reactant character will be inherited by the product.
A.) They are different than the reactant.

When two reactants combine to form a product, the product have to be different than the reactant.
Common sense If A combines with B to form AB, then AB is chemically different from A and B

A compound is made up of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Which of the following chemical formulas represents this compound?

Answers

Since Carbon has a chemical name of "C," Hydrogen has "H" and Oxygen has O, we can start with the name "CHO". After this, the next task is to place the proper numbers next to the proper elements. In this case, the representation would be C(6)H(12)O(6), which would be the representation of the simple sugar glucose.

(EMG) Which sequence contains elements listed from most reactive to least?

1. Click to view
Alkali metals, alkaline earth metals, noble gases

2.
ransition metals, alkali metals, alkaline earth metals

3.Click to view
Alkaline earth metals, alkali metals, halogens
4. Click to view
Transition metals, noble gases, halogen

Answers

Final answer:

Alkali metals are the most reactive, followed by alkaline earth metals. Noble gases are the least reactive. Thus, the correct sequence from most to least reactive is alkali metals, alkaline earth metals, noble gases. Option 1

Explanation:

In a periodic table, the reactivity of elements tends to decrease from the left to the right. Therefore, the correct sequence from most reactive to least reactive elements would be option 1: Alkali metals, alkaline earth metals, and then noble gases.

This is because alkali metals (group 1) are the most reactive elements, followed by alkaline earth metals (group 2). Noble gases (group 18) are very stable and hence the least reactive. On the other hand, transition metals are generally less reactive than alkali and alkaline earth metals, while halogens are more reactive than noble gases but less reactive than alkali and alkaline earth metals.

Option 1

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