The specific heat of gold is 0.129 J/g#*#c. What is the molar heat capacity of gold?

Answer 1

25.4 J/mol

The specific heat of any substance is referring to the amount of energy require to raise 1 gram of that substance 1 degree kelvin. Molar heat capacity is referring to the amount of energy required to raise 1 mole of that substance 1 degree kelvin. So in order to solve for molar heat capacity of gold we must convert from grams of gold to moles of gold.

#(0.129J/g)(196.97g/(mol))=25.4 J/(mol)#

196.97 is the molar mass of gold which can be found on the Periodic Table of Elements. Because grams are located on both sides of the denominator they cancel out leaving us with our new units of J/mol.

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Answer 2

Kai Bowman

The molar heat capacity of gold is approximately 25.42 J/mol°C.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.