\((mass\,\,of\,\,a\,\,substance) \dfrac{1\,\,mol\,\,of\,\,a\,\,substance}{mass\,\,of\,\,1\,\,mol\,\,of\,\,a\,\,substance} =\)To find this, you need to know the molar mass of 1 mole of a substance, and that's found using the periodic table.
\(moles\,\,of\,\,a\,\,mass\,\,of\,\,substance\)
How many moles of water is 10,000 g of water?
\(The\,\,molecular\,\,weight\,\,of\,\,H_{2}O\,\,is\,\,18.015\,g\)
\(so\)
\((10,000\,\,g\,\,H_{2}O)\dfrac{mol \,\,H_{2}O}{18.015\,g\,\,H_{2}O} = 555.092978074\,\,mol\,\,H_{2}O\)
