How much heat is needed to raise 100 g of charcoal from 20 °C to 30 °C. Charcoal specific heat is 0.201 cal/g* °C.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o