Plzz Help I was sick and don't know this!! Conservation of mass!!?

Boris Hadsall: "Conservation of Mass", I believe, is referring to the fact that matter can neither be created or destroyed. It goes somewhere. So, when you are doing a chemical equation, you have to account for every atom. ie. 2H + O2 = H2O + OYou have to make sure that you have every atom on both sides of the equation....Show more

Carolynn Testani: http://www.chem.latech.edu/~upali/chem120/Chapter5...1 mol = 6.022 x 10^23 particles 1 mol = 6.022 x 10^23 atoms 1 mol = 6.022 x 10^23 molecules 1 mol = 6.022 x 10^23 ionsAtomic wieght,=how much does 1 mol [6.022 x 1023 atoms] of element weightthen i can take 2 mols of hyrogen [h2] +1 mol of oxigen [o1] and get h20,=water. that weighs [h2=2*1grams]+[o1=1*16 grams]=18grams of waterSee periodic table of elements More... http://images.search.yahoo.com/search/images?imgsz......Show more

Lyman Gauld: the law of the conservation of mass says that mass cannot be created nor destroyed. Mass always has to go somewhere ! be it into another substance or turned into energy. this is why you balance a chemical equation, so you don't break this law.