The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a matchbox. If you were to react 52.9 g of potassium chlorate (KCIO,) with excess red phosphorus, what mass of tetraphosphorus decaoxide (P,O10) would be produced? KCIO:(s) + P4(s) --+ P,O0(5) + KCI(s) (unbalanced)

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When hydrogen sulfide gas is bubbled into a solution of NaOH, the reaction forms sodium sulfide and water according to the following unbalanced reaction. H₂S + 2NaOH → Na₂S + H₂O How many grams of sodium sulfide are formed if 2.75 g of hydrogen sulfide is bubbled into a solution containing 2.75 g of sodium hydroxide. (Atomic weights: Na 23.0, O 16.0, H 1.0, S 32.0)

9. Balance the following reaction: P4010 (s) 6PCI (s) → → lU POCI3 (1) \U POCI3 (1) What mass of each substance will be present after 15.00 g of P4010 and 15.00 g of PCI5 are reacted completely? (Hint: This is a limiting reactant problem!)

Sodium sulfate is known to form three different hydrates. The molar mass of a hydrate of sodium sulfate with the general formula Na2SO4 · n H2O is 322.1 g/mol. What is the water of hydration (n) value.