Chemistry: Calculate the energy required to heat 541.0mg of mercury from 11.4Â°C to 16.6Â°C. Assume the specific heat capacity of mercury under these conditions is 0.139 JÂ·g^âˆ’1K^âˆ’1. Be sure your answer has the correct number of significant digits.

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Calculate the energy required to heat 541.0mg of - id541010290255, bludragonfly33

Ответ:

Lindy1862

16.03.2022

Chemistry

Q=0.350J

Explanation:

Hello!

In this case, since the equation that allows us to compute the energy required for such temperature increase is:

Q=mC(T_2-T_1)

Whereas m is the mass, C the specific heat and T2 and T1 the final and initial temperature respectively; thus, by plugging in the given data, we obtain the following energy with consistent units and significant figures:

$Q=541.0mg*\frac{1g}{1000mg}0.139\frac{J}{g\°C} (16.06\°C-11.4\°C)\\\\Q=0.350J$

Considering that the specific heat can be used by unit of °C or K because their difference is equivalent.

Best regards!

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Calculate the energy required to heat 541.0mg of mercury from 11.4Â°C to 16.6Â°C. Assume the specific heat capacity of mercury under these conditions is 0.139 JÂ·g^âˆ’1K^âˆ’1. Be sure your answer has the correct number of significant digits.

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