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Debora [2.8K]
2 years ago
12

Which answer best describes an alpha particle

Chemistry
1 answer:
scZoUnD [109]2 years ago
4 0
A positively charged nucleus with two protons and two neutrons hope this helps :)
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How much heat is lost when 0.440 mol of steam condenses at 100 °C?
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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

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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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