How many oxygen atoms are present in 2 gram-atoms of O?
How many oxygen atoms are present in 50g of CaCO3?
How many molecules of oxygen are required for complete combustion of 1 mole of acetylene (C2H2)?
How many molecules are present in 9g of water?
1 mole of N2 has _____ number of atoms
24.088×1023 atoms of oxygen will combine with how many hydrogen atoms to form H2O