Monday, December 28, 2015

g of react with g of to form and How many grams of will be formed?

First, write the balanced equation, this is simple:



Hence each mole of propane requires moles of oxygen


Also we need to compute molar masses: for it is for it is and for it is


Now we can determine what initial substance will react completely: of is mole and of are moles. mole of requires moles of but there are only so all oxygen will be used.


Finally, moles of oxygen make moles of so moles make moles of and they have the mass of 66 g. This is the answer.

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