2.) 8.304 moles of helium gas are held at STP. What is the volume of the helium gas?

__can be defined as which velocity changes

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.