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dangina [55]
3 years ago
8

How much heat is lost when 0.440 mol of steam condenses at 100 °C?

Chemistry
1 answer:
dusya [7]3 years ago
8 0

Answer:

17,890 J

Explanation:

The amount of heat released by a gaseous substance when it condenses is given by the formula

Q=n\lambda_v

where

n is the number of moles of the substance

\lambda_v is the latent heat of vaporization

The formula can be applied if the substance is at its vaporization temperature.

In this problem, we have:

n = 0.440 mol is the number of moles of steam

\lambda_v=40,660 J/mol is the latent heat of vaporization of water

And the steam is already at 100C, so we can apply the formula:

Q=(0.440)(40660)=17,890 J

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Answer: 24 moles of SnF_2 are produced.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

{\text{Moles of}  H_2}=\frac{48g}{2g/mol}=24moles

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According to stoichiometry :

1 mole of H_2 is accompanied with = 1 mole of SnF_2

Thus 24 moles of H_2  is accompanied with =\frac{1}{1}\times 24=24moles  of SnF_2

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3 years ago
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What does the group number of element 114 have to do with its stability?
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Answer:

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The solubility of an ionic compound can be expressed as the number of moles of the compound that will dissolve per liter of solu
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Answer:

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Explanation:

The image for the question is attached

Solution

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b)

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