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chemistry

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According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy?

SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(l), ΔH°rxn = -184 kJ

  • chemistry -

    184 kJ energy released in the formation of 2 moles(36 g) H2O. So
    36.0 g H2O x (975 kJ/184 kJ) = ??

  • chemistry -

    45

  • chemistry -

    what mass of Mg combines with 5.80 L of O2 measured at STP

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