1. mols P = grams/molar mass
2. Convert mols P to mols P4O10 using the coefficients in the balanced equation.
3. Convert mols P4O10 to g. g = mols x molar mass.
How you solve P4(s)+5O2(g)------>P4O10(g) .if 2.50 grams of phosphorus is ignited in a flask how many grams of P4O10 are formed ?
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