STOICHIOMETRY - CHEMISTRY HELP PLEASE??

Posted on 2015-11-18 05:54:00 in Chemistry by CANDDY

1. How much 0.0100 mol/dm^3 barium chloride will you need to react with excess sodium sulfate to produce 0.100g of barium sulfate? Show work please!!

2. Magnesium and nitrogen are combined. Given 10.00g of the metal and 5.00g of the gas, what's the limiting reagent?
a. How much of the product are you expecting in grams?
b. What volume at STP will the 5.00g of nitrogen occupy?

3. What is the percent yield in this case : 2.50g of sulfur trioxide is "burned" leaving 2.50g of sulfure trioxide.
Show work.

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