Posted by **Mary** on Sunday, June 30, 2013 at 9:18am.

How would I calculate these? I have the answers because there from a previous test.

1) How much heat is required to raise the temperature of a 5.52-g sample of iron ( specific heat = 0.450 J/g C) from 25.0 degrees C to 79.8 degrees C?

2) You mix 60. mL of 1.00 M silver nitrate with 25 mL of 1.63 M sodium chloride. What mass of silver chloride should you form?

- Chemistry -
**DrBob222**, Sunday, June 30, 2013 at 1:22pm
1)

a = mass Fe x specific heat Fe x (Tfinal-Tinitial)

2)

This is a limiting reagent problem. I know that because amounts are given for BOTH reactants.

AgNO3 + NaCl ==> AgCl(s) + NaNO3

mols AgNO3 = M x L = ?

mols NaCl = M x L = ?

Using the coefficients in the balanced equation, convert mols AgNO3 to mols AgCl.

Do the same to convert mols NaCl to mols AgCl.

It is likely that these two values will not be the same which means one of them is wrong; the correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that value is the limiting reagent.

Use the smaller value and convert to grams. g AgCl = mols AgCl x molar mass AgCl.

## Answer This Question

## Related Questions

- Chemistry - How much heat is needed to raise the temperature of 5.58 kilograms ...
- chemistry - The specific heat of iron is approximately 0.45 J/g °C. How much ...
- Lauren - The amount of heat required to raise temperature of 55.85 g of iron 1 ...
- chemistry - calculate the heat energy required to raise the temperature of a 500...
- AP chemistry - The specified heat capacity of silver is 0.24 J/C.g. Please help ...
- AP chemistry - The specified heat capacity of silver is 0.24 J/C.g. Please help ...
- Phsyics - How much heat is required to raise the temperature of a 4.1-kg block ...
- Physics - How much heat is required to raise the temperature of a 4.3-kg block ...
- Chemistry - Calculate the amount of heat (in calories) required to raise the ...
- Chemistry - If we heat a 10 g sample of gold and a 10 g sample of iron with 50 ...

More Related Questions