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6HF + SiO2 => H2SiF6 + 2H2O Delta Hrxn = -670kJ/mol
What is the enthalpy change if the feed into a reactor contains 3 mol HF and 1.5 mol SiO2
The confusing part is the kJ/mol vs just kJ. I see that 3 mol HF will react with 0.5 mol SiO2 is it just -670 x 3.5?
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a chemical reaction produced .311 g sample of gas which occupied 225 mL at 55 degrees C exerting a pressure of 86 mm Hg. what is the molar mass of the gas?
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