Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound. Answer using one decimal place. What is the percent by mass of carbon? % What is the percent by mass of oxygen? %
What is the percent by mass of oxygen? %
% by mass H2O
63.0
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A compound is composed of 22.5% phosphorus and 77.5% chlorine. The molecular mass of the compound is 137.32 g/mol. What is the molecular formula of the compound?
Calculate the formula for the following hydrate composed of 76.9% CaSO3 and 23.1% H2O.
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