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Okay, so to calculate the mass of any of the reactants or products you need the molecular weights.
example hydrogen is about 1.0079 grams per mole and oxygen is about 15.998 grams per mole, off the top of my head.
are two moles of water, H2O because of the 2 before it in the reaction.
hydrogens and one oxygen give you a mass of about 18 g/mol for water, and you have two moles so about 36 grams of water as your first reactant. In the products you have H2, which is two hydrogen atoms so about 2.014 g/mol. The masses of the reactants and products should be equal to eachother, or you have done something wrong.
means that the mass of the reactants mass of products 0. To get the molecular weights in g/mol, use almost any periodic table.
example hydrogen is about 1.0079 grams per mole and oxygen is about 15.998 grams per mole, off the top of my head.
are two moles of water, H2O because of the 2 before it in the reaction.
hydrogens and one oxygen give you a mass of about 18 g/mol for water, and you have two moles so about 36 grams of water as your first reactant. In the products you have H2, which is two hydrogen atoms so about 2.014 g/mol. The masses of the reactants and products should be equal to eachother, or you have done something wrong.
means that the mass of the reactants mass of products 0. To get the molecular weights in g/mol, use almost any periodic table.
Tue, 09 Mar 2010 17:13:35 GMT
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