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3 years ago

What does temperature indicate about motion of molecules or particles in a substance

1 answer:

7 0

The higher the temperature, the faster the molecules or particles will move. This is because the increased temperature will increase the amount of energy inside the molecules or particles, which means they are able to move more quickly with their increased amount of energy.

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In the following reaction, how many grams of oxygen will react with 10.47 grams of benzene (C6H6)? 2C6H6 + 15O2 12CO2 + 6H2O The

Ivahew [28]

32.17 grams of oxygen.

Don't know why you're asking. It looks like you've already answered the question yourself.

You have 10.47 grams of benzene. Dividing by its molar mass of 78.1074 means that you have 10.47/78.1074 = 0.134046 moles of benzene. Looking at the reaction, for every 2 moles of benzene, you need 15 moles of O2. So 0.134046 / 2 * 15 = 1.005346 moles of O2 is needed to consume all the benzene. And then multiply by O2's molar mass and you get 1.005346 * 32 = 32.17109 which when rounded to the nearest hundredth, gives you 32.17 grams.

8 0

3 years ago

Read 2 more answers

How many ml of a 4.0 M Mg(OH)2 are needed to make 750 ml of 0.2 M Mg(OH)2???

cupoosta [38]

Answer:

37.5 mL of a 4.0 M Mg(OH)₂ are needed to make 750 mL of 0.2 M Mg(OH)₂

Explanation:

Dilution is the reduction in concentration of a chemical in a solution. Dilution consists of lowering the amount of solute per unit volume of solution.

In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and consists of adding solvent to an existing solution. The quantity or mass of the solute is not changed but only that of the solvent.

In dilutions the expression is used:

Ci*Vi = Cf*Vf

where:

Ci: initial concentration
Vi: initial volume
Cf: final concentration
Vf: final volume

In this case:

Ci: 4 M
Vi: ?
Cf: 0.2 M
Vf: 750 mL

Replacing:

4 M* Vi= 0.2 M* 750 mL

Solving:

$Vi=\frac{0.2 M*750 mL}{4 M}$

Vi= 37.5 mL

37.5 mL of a 4.0 M Mg(OH)₂ are needed to make 750 mL of 0.2 M Mg(OH)₂

8 0

3 years ago

What pressure will be exerted by 0.675 moles of a gas at 25*C if it is in a 0.750-L container?

Westkost [7]

PV=nRT

P=nRT/V

P=[(0.650mol)(0.08206)(298K)]/(0.750L)=21.2atm

6 0

4 years ago

what is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants

Rama09 [41]

This reaction would produce salt and water- Sodium Sulphate and Water.

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

4 0

3 years ago

Why is the movement of water between land, oceans and living things important?

Yakvenalex [24]

This allows the water cycle to take hold. Transferring water to places all across the globe, adding minerals and purifying other water In the process.

4 0

3 years ago

What does temperature indicate about motion of molecules or particles in a substance​

What does temperature indicate about motion of molecules or particles in a substance