Chemistry

Which pair of samples contains the same number of hydrogen atoms

two moles of NH3 and three moles of N2H4
two moles of NH3 and one mole of N2H4
four moles of NH3 and three moles of N2H4
one mole of NH3 and one mole of N2H4

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  1. 6 + 12= 18
    6 + 4 = 10
    12+ 12 =24
    3 + 4 = 7
    beats me

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  2. To rephrase Damon's answer:
    6 is not equal to 12.
    6 is not equal to 4.
    12 = 12
    3 is not equal to 4.

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