Which of these is an empirical formula? A . C²h⁴
B. C⁴ H ¹⁰
C. P²O⁵
D. P⁴O⁶
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How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).