The specific heat of copper is about (1.4 joule/gram°C. How much heat is needed to change the temperature of a 30-gram sample of copper from 20.0°C to 60.0°C?​

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

All forces cause motion? true or false

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.