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6 October, 18:51

H2S (g) + O2 (g) - > SO2 + H2O, how many grams of O2 are needed to make 25.0 g of SO2 (Hint: balance the equation first)

a.) 12.5g

b.) 18.7g

c.) 32.0g

d.) can't be determined

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Answers (1)
  1. 6 October, 19:29
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    Hello

    The answer is 18,7 (b)

    Explanation:we don't know the value of o² so at first we should put (x) instead of gr of o²and then write 1molO²/32grO²*2mol SO²/3mol O²*64gr SO²/1molSO²=25 gr SO². and then just find the value of (x).
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