Compound X has a molar mass of 316.29 g'mol
1
and the following composition:
element
mass %
phosphorus
39.17%
sulfur
60.83%
Write the molecular formula of X.
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
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