0.775 g Na 2 CO 3 x 1 mole x 2 mole HCl x 1 L x 1000 mL = 13.4 mL 106 g 1 mole Na 2 CO 3 1.09 moles 1 L . 3. Calculate the number of grams barium carbonate that can be precipitated by adding 50.0 mL of 0.424 MBa (NO 3) 2. This is the mole ratio of the elements and is represented by subscripts in the empirical formula. If the number is too far to round (x.1 ~ x.9), then multiply each solution by the same; factor to get the lowest whole number multiple. Now, we can find the molecular formula by finding the mass of the empirical formula and setting up a ratio:

Oct 08, 2020 · Molar mass worksheet key water h 2o element number mm h 2 1 01 g mole o 1 16 00 g mole total mm 18 02 g mole carbon dioxide 2co 2 element number mm o 2 16 00 g mole c 1 12 01 g mole total mm 44 01 g mole sodium chloride nacl element number mm cl 1 35 45 g mole na.

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