How many moles of mgcl2 are there in 315 g of the compound? mol

What is the momentum of a 2 kg object moving at 15 meters per second

In a system, when potential energy decreases, then entropy also decreases. true false

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.