Posted by Sete Odhiambo on Monday, October 24, 2011 at 5:28pm.
C12H22O11 + 12O2 ==> 12CO2 + 11H2O
Convert 2.50 g CO2 to moles grams sugar. The easy way is 2.50g CO2 x (molar mass sugar/12*molar mass CO2) = about 1.7 g (but you need to be more accurate).
Then 5.00g - 1.7g sugar = grams NaCl.
%NaCl = (mass NaCl/mass sample)*100 = ??
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