We’re being asked to determine the empirical formula of a compound composed of Na, S, and O given the mass percent of each element. This means we need to do the following steps:
Step 1: Calculate the mass and moles of Na, S, and O in the compound.
Step 2: Determine the lowest whole number ratio of Na, S, and O to get the empirical formula.
Step 1: Recall that mass percent is given by:
What is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass?
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