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Ulleksa [173]
2 years ago
12

How do I solve this?

Chemistry
1 answer:
Oliga [24]2 years ago
6 0

Answer:

The heat contained is 1236 Joules

Explanation:

As we know

Q = mc\DeltaT

Where

\DeltaT is the change in temperature

m is the mass in grams

c is the specific heat of water (ice) = 2.06 joules/gram

Substituting the given values, we get -

Q = 20 * (-15+45)*2.06\\Q = 20*2.06*30\\Q = 1236Joules

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A collection of pennies was investigated. 10.00% were found to have been minted in San Francisco with an average mass of 2.15 g
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The average mass of the pennies in the sample is 2.16 g.

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The average mass of the pennies in the sample is 2.16 g.

You can learn more about weighted average here: brainly.com/question/18554478

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