A chemist carefully measures the amount of heat needed to raise the temperature of a 188.0g sample of C4H8O from -0.3 degrees C to 14.7 degrees C. The experiment shows that 4.73 x 〖10〗^3 of heat are needed. What can the chemist report for the molar heat capacity of C4H8O? Round your answer to 3 significant digits.

Question

anonymous · Answer

@.sam. Can you help me with this question?

kainui · Answer

What is molar heat capacity? It's the amount of energy it takes to raise the temperature of one mole of a substance by one degree degree Celsius. Think about this for a second to try to understand why this makes sense. If it has a low heat capacity then it takes very little energy to raise it in temperature. If it has high heat capacity then it takes a long time to heat it up.

A good example of something with high heat capacity is water. Just think about how long it takes to make water boil. Now imagine just taking the pot and putting it on the stove without any water in it. The metal pot has a very low heat capacity so it will heat up really hot really fast.

$$Q=m*c* \Delta t$$ this is the relationship between heat (Q), mass (m), heat capacity (c), and time (Delta t). You're not given the heat capacity, so if you rearrange the formula you're given with algebra and identify Q, m, and Delta t from the problem above you can answer the question.

I'll help if you run into trouble, but what's important is that you try to figure it out on your own.