# chemistry

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When 0.320 moles of NH4Cl is dissolved in 1.00 L of water, the temperature drops by 13.7 degrees C. What is the heat of solution of ammonium chloride? The solution has a density of 1.0012 g/mL and a specific heat of 0.9818 cal/g degrees C.

How do you find the mass of water to use in the equation:

q = mass water x specific heat water x delta T.

• chemistry - ,

mass water = volume water x density water. Watch the units.

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why do you need to use the mass of water in the q= equation, if you're trying to find the heat of solution of ammonium chloride?

• chemistry - ,

The water is what changed temperature by 13.7 degrees C.
Isn't your formula
q = mass water x specific heat water x delta T? The water temperature is the vehicle by which you determine what NH4Cl does when placed in solution and by how much.

• chemistry - ,

how do u find density of the water?

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