Question

In hydrogen atom the electron moves in an orbital of radius 5 into 10 raise to power 11 metres with the speed of 2.2 into 10 raise to power 6 metre per second find the equivalent current

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.