As the formula of H₃PO₄ shows , that in 1 mole of H₃PO₄ there are 3 hydrogen atoms that are used in it and that means there is 3 g of hydrogen , So as in 1 mole of H₃PO₄ there are 3 hydrogen atoms that are used in it and that means there is 3 g of hydrogen, then in 10 mole of H₃PO₄ there are 3×10=30 hydrogen atoms that are used in it and that means there is 30 g of hydrogen.
So , 30 g of hydrogen are needed to produce 10 moles of H₃PO₄
Answers & Comments
As the formula of H₃PO₄ shows , that in 1 mole of H₃PO₄ there are 3 hydrogen atoms that are used in it and that means there is 3 g of hydrogen , So as in 1 mole of H₃PO₄ there are 3 hydrogen atoms that are used in it and that means there is 3 g of hydrogen, then in 10 mole of H₃PO₄ there are 3×10=30 hydrogen atoms that are used in it and that means there is 30 g of hydrogen.
So , 30 g of hydrogen are needed to produce 10 moles of H₃PO₄