How many joules of heat would be required to heat 0.5 kg of aluminum by 2k?

An experimental procedure requires a 10 ml of acid to be dissolved

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

All motion is caused by force? true or false