Dorrito

When 2.1x10^3 J of heat is added to 100.g of a substance, its temperature increases from 15 C to 40 C. What is the specific heat capacity of the substance? Answer is 8.4x10^2 but I need to see the work involved in how to solve the problem

A copper calorimetric cup with a mass of 100g contains 96g of water at 13 C. If 70g of a substance at 84 C is dropped into the cup, the temperature increases to 20 C. Find the specific heat capacity of the substance

How much heat energy is required to convert 0.1000kg of ice at -10.0 C into water at 50 C?

A balloon is filled with 3.4L of helium gas at 10.C. The temperature of the balloon increases to 50. C after being placed in a car on a sunny day. What is the final volume of the balloon? (assume that B is the saem as for air)

What will be the temperature change in each of the following? a) 10.0kg of water loses 4.56x10^5 J of energy? b) 4.80kg of alcohol (c=2450 J/kgC) gains 1.26x10^4J of energy?