As water is cooled its density increases until it reaches about _

26.2 kJ of energy are absorbed for every mole of carbon reacted

Answer: D) 26.2 kJ of energy are absorbed for every mole of carbon reacted.

Solar energy.

This whole process starts with the solar energy. It also involves the sun within the process. Solar energy is radiant light and heat that comes from the sun. So it seems to fit in with the story that was given.

Best of luck on your assignment!

- Emacathy

Answer:

B) solar energy

Explanation:

The Answer Is D. Have A Great Day

Answer:

D

Explanation:

Density = mass/volume.

You are given the density and asked to find the mass.  So, you need to find the volume.  According to Archimedes Principle, the volume displaced by an object is equal to the volume of that object.  So, in this problem the volume of the lead is the same as the volume of water that it displaced.  That would be  

95.6 ml - 73.2 ml = 22.4 ml.  

Density = mass/volume

11.3 g/ml = mass/22.4 ml

mass = 11.3 g/ml x 22.4 ml = 253 g (to 3 significant figures)

The problem deals with the concept of density and requires working out the change in volume when a lead cylinder is added to water. The mass of the lead cylinder is found by multiplying the density by the change in volume, providing an answer of approximately 253.2 grams.

The problem you've outlined can be solved using the concept of density. Density is defined as mass per unit volume. In your case, the volume changes when the lead cylinder is added to the water providing the volume of the lead cylinder. This change in volume is calculated as 95.6 mL - 73.2 mL = 22.4 mL. Now, since density is mass/volume, we can find the mass by multiplying density by volume: (11.3 g/mL) * (22.4 mL) = 253.2 grams. So the mass of the lead cylinder is approximately 253.2 grams.

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Bond order: 1.

How many chemical bonds in a H₂ molecule?

There is one valence electron in each neutral H atom. Refer to a periodic table. H is one electron away from the closest noble gas: He. The H atoms need to achieve the noble gas configuration of He to be stable. For that, each H atom needs one more electron. There are two H atoms in an H₂ molecule. It will take 2 × 1 = 2 more electrons for both H atoms in each H₂ molecule to become stable.

Unlike ions, the H₂ molecule is neutral. There's no no extra electron for the H atoms. The two atoms need to share electrons with each other by forming chemical bonds. One chemical bond adds one electron to both bonding atoms. As a result, each bond will add two electrons to the molecule.

The H₂ molecule needs 2 extra electrons, which corresponds to 2 / 1 = 1 chemical bond.

What's the bond order?

[tex]\displaystyle\text{Bond Order} = \frac{\text{Number of Bonds}}{\text{Number of Bonding Sites}}[/tex].

The two H atoms in an H₂ molecule forms

As a result,

[tex]\displaystyle\text{Bond Order} = \frac{\text{Number of Bonds}}{\text{Number of Bonding Sites}} = \frac{1}{1} = 1[/tex].

The bond order of H₂ is 1, calculated by subtracting the number of antibonding electrons from the number of bonding electrons (2 - 0), then dividing by 2. A bond order of 1 corresponds to a single covalent bond between the two hydrogen atoms.

The bond order is a term in chemistry that refers to the number of chemical bonds between a pair of atoms. To calculate the bond order of H₂ (dihydrogen), we utilize molecular orbital theory. Given that the 0₁s (bonding) molecular orbital contains two electrons and the ot (antibonding) molecular orbital is empty, the calculation is straightforward. The bond order is calculated as one-half the net number of bonding electrons, which, in this case, is one-half the difference between the number of bonding and antibonding electrons:

Bond order of H₂ = ((bonding electrons) - 0 (antibonding electrons)) ÷ 2 = 2÷ 2 = 1.

This result corresponds to the single covalent bond observed between the two hydrogen atoms in a H₂ molecule, making the bond relatively strong and stable. The bond order of 1 reflects a single bond, which aligns with experimental data indicating that H₂ has a bond length appropriate for a single bond.

Answer:

a small rock sitting on top of a big rock

a stretched rubber band

Explanation:

A small rock sittin on the top of a big rock has stored energy because of the potential energy that it contains, as well as the stretched rubber band in all the kinetic energy that is stored in the streched rubber band and it is just about to free it as soon as what is keeping it stretched liberates it.

The answer to that question would be Activation energy. If would like me to elaborate just let me know. :)

Answer: Activation energy

Explanation:

Activation energy is the minimum energy required to initiate a chemical reaction.

It is the minimum energy required to excite reactant to break bonds and react with each other in the system while creating new products.

B: quantity of solute with a specific volome of solvent.

Have a Nice Day :)

Answer: quantity of solute dissolved in a given quantity of solvent

Explanation:-

Dilute : is defined as a solution in which amount of solvent is more than the amount of solute.

Concentrated: is defined as a solution in which amount of solute is more than the amount of solvent.

ppm: ppm is defined as the concentration when 1 part of the solute is  dissolved per 1 million of the solution.

Molarity: Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molality : Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

Normality: Normality of a solution is defined as the number of ram equivalents of solute dissolved per Liter of the solution.

When a hydrogen atom and a chlorine atom react to form a hydrogen chloride molecule, the hydrogen atom acquires a partial positive charge, and the chlorine atom acquires a partial negative charge.

When a hydrogen (H) atom and a chlorine (Cl) atom react to form a hydrogen chloride (HCl) molecule, the hydrogen atom acquires a partial positive charge, and the chlorine atom acquires a partial negative charge. This is because of the electronegativity difference between hydrogen and chlorine. The hydrogen atom loses its electron to the highly electronegative chlorine atom, resulting in a partial positive charge on the hydrogen atom and a partial negative charge on the chlorine atom.

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H-H and Cl-Cl bonds break to HCl Formation bonds in an exothermic reaction. This results in hydrogen chloride or HCl, which behaves as an acid in water, producing hydronium and chloride ions.

When a hydrogen atom and a chlorine atom react, H-H bonds and Cl-Cl bonds are broken to form two moles of HCl.

The energy to break these bonds is 436 kJ/mol for the H-H bond and 243 kJ/mol for the Cl-Cl bond.

When the reaction takes place, two moles of strong H-Cl bonds form, releasing an energy of 864 kJ (432 kJ/mol for each bond).

Hence, the reaction is exothermic as more energy is released than consumed.

Furthermore, in HCl, hydrogen acquires a partial positive charge, while chlorine acquires a partial negative charge, contributing to the molecule's polar nature.

If dissolved in water, HCl behaves as an acid, transferring protons to water molecules and yielding hydronium ions and solvated chloride ions.

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The probable question may be:

When a hydrogen atom and a chlorine atom react with each other what does it formed?

C) Step 1: a horizontal spinning effect is formed from wind shear

Step 2: warm rising air shifts the horizontal rotation to a vertical rotation

Step 3: the vertical rotation expands and extends

sample c because it has the highest absorption

the hybridization is probably sp2. it will have 1pi bond. There is a double bond between C and O atoms and that double bond consists of 1 pi bond and 1 sigma bond.

Final answer:

The hybridization of carbon in Cl₂CO is sp² due to three electron domains (two Cl atoms and one double-bonded O atom) resulting in a trigonal planar geometry.

Explanation:

The hybridization of the central carbon atom in Cl₂CO (phosgene) is sp². This is because the carbon atom is bonded to two chlorine atoms and an oxygen atom through a double bond. To determine this, we analyze the electron domains around the carbon atom. With three domains (two single bonds and one double bond), it adopts sp² hybridization, which allows for trigonal planar geometry. It is important to note that the double bond with oxygen consists of one sigma (σ) bond and one pi (π) bond. The pi bond results from the lateral overlap of unhybridized p-orbitals, whereas the sigma bond is formed by the head-to-head overlap of sp² hybrid orbitals from carbon and oxygen.

The answer is 0.12 moles of SO2.

The answer is 0.12 moles of SO2

please mark brainiest i just need one more crown so i could be an expert please and thank you =)

Step #1: Convert to grams.

120kg × (1000g ÷ 1kg) = 120000g of copper

Step #2: Convert sample mass of copper to moles by dividing sample mass to its atomic weight. Atomic weights could be found in periodic table.

120000g Cu × (1mol Cu ÷ 63.55g Cu) = 1888.277mol Cu

Step #3: Convert moles to atoms by multiplying moles to Avogadro's number.

1888.277mol Cu × (6.022x10^23 ÷ 1mol Cu) = 1.137x10^27 atoms Cu

*I attached a picture to help out with conversions.

There is 120000 grams in a pure copper statue.

Who cares? unless you wanna be a scientist when you get older. this is pointless

10 mL more water is needed to do so...

Answer

1. 1cm=10mm, 1kg=1000g and 12in=1 ft

2. 50mm=5cm

    48 in =4ft

     36ft=12 yd

     2.5m=250cm

     1000mL= 1 L

Explanation

if 1cm=10mm then 5cm=?

5×10=50mm

if 12 in =1ft then 48in=?

48/12 =4 ft

if 1m=100cm, then 2.5m=?

2.5×100= 250cm

and when know from capacity that 1000mL is equivalent to 1 liter.

Yes, potassium is a metal

All the above

-street lights

-businesses

- Homes, etc

Answer:

D. all of the above

Explanation:

Atom

A chemical bond forms when the atom of one element interact(s) with an atom of another element.

Answer: Its C

Explanation: I did the test and got it correct

The molality of a solution is defined as the number of moles of solute  per kilogram of solvent .The correct option is C.

Molality is a measure of the concentration of a solution because it expresses the amount of solute in a given amount of solvent.It is different from the molarity  which is defined as the number of moles of solute per liter of solution .

The primary advantage of using molality as a measure of concentration is that molality only depends on the masses of solute and solvent, which are unaffected by variations in temperature and pressure. In contrast, solutions prepared volumetrically .

Thus, the correct option is 'C'.

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Use Charle's Law because we are dealing with volume and temperature.

[tex]\frac{v}{t} =\frac{v}{t}[/tex]

v₁= 3017.0 ml

t₂ = 0

v₂= ???

t₂= 273°C

Change all mL's to L because the question says "What is the volume (L)...".

3017.0 mL = 3.017 L

Change the temperature into Kelvins:   Kelvin = Celsius + 273.15

0°C = 273.15 K

273°C = 546.15 K

Now you can plug it in the formula:

[tex]\frac{3.017}{273.15} = \frac{v}{546.15}[/tex]

Then, do cross multiplication.

(3.017) (546.15) = (273.15) v₂

1,647.73 = (273.15 K) v₂

                                         Divide 273.15 on both sides

6.0296 L= V₂

Charles' Law is a special case of the ideal gas law. It states that the volume of a fixed mass of a gas is directly proportional to the temperature. This law applies to ideal gases held at a constant pressure, where only the volume and temperature are allowed to change.

Charles' Law is expressed as:

Vi/Ti = Vf/T f

where

Vi = initial volume

Ti = initial absolute temperature

Vf = final volume

T f = final absolute temperature

It is extremely important to remember the temperatures are absolute temperaturesmeasured in Kelvin, NOT °C or °F.

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Answer:

Mass in grams of formaldehyde = 196.51 g

Explanation:

No. of molecules of formaldehyde = [tex]3.94 \times 10^{24}[/tex]

Moles is related with number of molecules as:

[tex]mol=\frac{No.\ of\ molecules}{Avogadro's\ no.}[/tex]

Avogadro's no. = [tex]6.02 \times 10^{23}[/tex]

moles of formaldehyde

                [tex]=\frac{3.94\times 10^{24}}{6.02\times 10^{23}} \\=6.544\ mol[/tex]

Molar mass of formaldehyde = 30.03 g/mol

Molar mass is related with mass as:

Mass = Moles × Molar mass

        = 6.544 × 30.03

       = 196.51 g

Answer:

[OH⁻] = 10⁻¹⁴/[H⁺].

Explanation:

∵ [H⁺][OH⁻] = 10⁻¹⁴.

∴ [OH⁻] = 10⁻¹⁴/[H⁺].

Answer:

[tex]Kw = [H+][OH-][/tex]

Explanation:

For a given solution H+ refers to the hydrogen ion concentration and is indicative of the acidity of the solution. The more the [H+] concentration, higher is the acidity. Similarly, OH- refers to the hydroxide ion concentration and reflects the basicity of the solution. A solution with a higher OH- concentration is said to be basic.

The two are related by considering the dissociation of water:

[tex]H2O(l)\rightleftharpoons H+(aq)+ OH-(aq)[/tex]

The dissociation constant for water, Kw is:

[tex]Kw = [H+][OH-]\\\\where\ Kw = 10^{-14} \\\\10^{-14} = [H+][OH-]\\[/tex]

[tex][H+] = \frac{10^{-14}}{[OH-]}[/tex]

Avagadros law states that at constant pressure and temperature conditions the volume is directly proportional to number of moles of gas

[tex]\frac{v1}{n1} = \frac{v2}{n2} \\[/tex]

where v1 is volume and n1 is number of moles at first instance

v2 is volume and n2 is number of moles after some of the gas is released

substituting the values in the equation

[tex]\frac{8.00 L}{1.200 mol} = \frac{5.25 L}{n2}[/tex]

n2 = 0.788 mol

after some of the gas is released only 0.788 mol remain

Answer:

When selecting a material to use as a light bulb filament, there are several important properties to consider. However, one property that is not important in this context is color. The color of the filament does not affect its functionality or performance as a light source.

The primary function of a light bulb filament is to produce light when an electric current passes through it, and its color does not impact this process. The color of the light emitted by the bulb is determined by other factors, such as the gases or coatings inside the bulb.

When selecting a material for a light bulb filament, important properties to consider include:

1. Resistance: The material should have high electrical resistance to prevent excessive current flow and overheating.

2. Melting Point: The material should have a high melting point to withstand the high temperatures generated by the electric current passing through it.

3. Conductivity: The material should have good electrical conductivity to efficiently carry the current and produce light.

4. Durability: The material should be durable enough to withstand repeated heating and cooling cycles without breaking or deforming.

5. Cost: The material should be cost-effective to produce in large quantities, as light bulbs are commonly used in everyday applications.

By considering these properties, manufacturers can select the most suitable material for the filament, ensuring optimal performance and longevity of the light bulb.

Answer:

= 5.93 %

Explanation:

Volume % of a component is given by the formula;

= (Volume of the component/Total volume of the solution) x 100

Volume of the component = 920 mL

Total volume of the solution = 920 + 58 = 978 mL

Therefore;

Cvolume % = 58 mL/978 mL × 100%

                   = 5.93 %

True is the answer hope this helps

Answer: a principle stating that if a constraint (such as a change in pressure, temperature, or concentration of a reactant) is applied to a system in equilibrium, the equilibrium will shift so as to tend to counteract the effect of the constrain