Posted by Jess on Wednesday, February 29, 2012 at 10:59am.
1. Write the equation and balance it.
2a. Convert 1.21 g BaO2 to moles. mol = grams/molar mass.
2b. Do the same for the HCl. 0.0289 g/mL x 25.1 mL = grams, then mols = g/molar mass
3a. Using the coefficients in the balanced equation, convert mols BaO2 to moles of the product.
3b. Same for HCl
3c. You get two answers and only one can be right. The correct answer in limiting reagent problems is ALWAYS the smaller one and the reagent producing that value is the limiting reagent.
4. Using the smaller value, convert that to g. g = mols x molar mass.
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