1) 2C2H6 + 7O2 –> 4CO2 + 6H2O a) How many moles of O2 are required to react with 24 moles of C2H6? b) How many grams of C2H

Question

1) 2C2H6 + 7O2 –> 4CO2 + 6H2O
a) How many moles of O2 are required to react with 24 moles of C2H6?
b) How many grams of C2H6 are required to react with 12 moles of O2?
c) How many grams of O2 are required to react with 200g of C2H6?

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Thái Dương 2 months 2021-07-22T14:22:44+00:00 1 Answers 4 views 0

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    2021-07-22T14:24:09+00:00

    Answer:

    a).

    2 \: moles \: of \: ethane \: react \: with \: 7 \: moles \: of \: oxygen \\ 24 \: moles \: react \: with \: ( \frac{24 \times 7}{2} ) \: moles \\  = 84 \: moles

    b).

    2 \: moles \: react \: with \: 7 \: moles \\ ( \frac{12 \times 2}{7} ) \: moles \: react \: with \: 12 \: moles \\  = 3 .43 \: moles \\ 1 \: mole \: weighs \: 30 \: g \\ 3.43 \: moles \: weigh \: (3.43 \times 30) \\  = 102.9 \: g

    c).

    746.7 g

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )