Not many. A mole of anything is 6-022 X 10^23,so...
41 atoms Ba (1mol Ba/6.022 X 10^23 ) = 6.8 X 10 ^-23 moles
In 0.800 moles of MgO, there are the same number of oxygen atoms as there are in 0.800 moles of O atoms. One mole of MgO contains one mole of oxygen atoms, which is equivalent to 6.022 x 10^23 oxygen atoms.
There are 10 moles of oxygen in one mole of P4O10. This is because each molecule of P4O10 contains 4 phosphorus atoms and 10 oxygen atoms.
One molecule has four H atoms.So two moles have 8 moles
There are 4 phosphorus atoms in one molecule of copper phosphate (Cu3(PO4)2). Therefore, in 7.6 moles of copper phosphate, there would be 7.6 moles x 4 atoms = 30.4 moles of phosphorus atoms.
One molecule of N2O N 2 O contains one atom of oxygen.
6. 1 mole of CS2 contains 1 mole of carbon and 2 of sulfur.
There are 0.18 moles of Ca2+ ions in 0.18 moles of CaF2.
In one mole of aluminum III oxide (Al2O3), there are 2 moles of aluminum atoms (since there are 2 aluminum atoms in each formula unit of Al2O3) and 3 moles of oxygen atoms. Therefore, one mole of aluminum III oxide contains 2 + 3 = 5 moles of atoms. Avogadro's number (6.022 x 10^23) of atoms can be found in one mole of any substance.
In one mole of hydrogen peroxide (H2O2), there are two moles of oxygen atoms.
9 moles (there are four oxygen atoms for every mol of BaSO4, so you multiply 2.25 by 4)
One mole of atoms is 6.02x1023 atoms, so 10 moles of any substance would contain 6.02x1024 atoms.
Methane (CH4) has four atoms of hydrogen per molecule. If there are 3 moles of methane, then there are 12 moles of hydrogen.