Convert into mole. 12g of oxygen gas

Covnert into mole 20 g of water

Convert into mole 22g of carbon dioxide.

What is mole?

How many faradays of electricity are required to liberate 2 moles of hydrogen gas in electrolysis of a solution?

How many moles of oxygen atoms are present in 1 mole of KmnO_4 ?

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3g of hydrogen gas?

What is the mass of 0.2 mole of oxygen atoms?

Convert the number 15251 of decimal system into the numerals of Duodenary system (base 12).

A cylinder with a movable piston contains 3 moles of hydrogen at standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume?

A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144g of oxygen. Calculate the percentage composition of the compound by weight.