How much heat does it take to raise the temperature of 9.0 kg of wood from 12c to 97c? the specific heat of wood is 1.68 kj/(kgc). use q = mc(tf - ti). a. 760 kj b. 1300 kj c. 180 kj d. 1500 kj

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

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?