Question

The ionisation energy of hydrogen atom (in the ground state) is x kj. The energy required for an electron to jump from 2nd orbit to the 3rd orbit will be

Answer 1

At stp (273 k and 100 kpa), 1.15 dm3 of a gas has a mass of 3.96 g. Determine the molar mass of the gas.

The density of a gas is measured at 1.853 g / L at 745.5 mmHg and 23.8 °C.