how many joules of heat are needed to raise the temperature of 15.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g°C

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?

How many atoms of nitrogen are in the chemical formula ni(w on