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What mass of aluminum would need to react to produce 25.5 grams of hydrogen? 2Al + 3H2SO4 --> Al2(SO4)3 + 3H2 Sorry, don't know how to do subscripts on computer :p
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25.5g H2 x 2 x 26.98 g Al /(3 x 2 g H2) = 229.33 g
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