Heat of vaporization of water in temperature range
How many grams of water can be cooled from 45 to 18 by the evaporation of 62 of water? (The heat of vaporization of water in this temperature range is 2.4 . The specific heat of water is 4.18 .)
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How many grams of the compound in excess remains after complete reaction?
a mixture of three gases has a total of 756 mm Hg. If the pressure of nitrogen is 612 mm Hg and the pressure oxygen if 100 mm Hg, what is the pressure of the carbon dioxide gas in the mixture?
By what factor (how many times) will the rate constant increase when the temperature is raised from 10°C to 28°C?
What is the concentration (in mg/L ) of dissolved 02 in blood (or water) at this partial pressure and a normal body temperature of 37 C? partial pressure in lungs is 68mmhg.
An unknown salt is either NaCn, NaC2H3O2, NaF, NaCl, or NaOCl. When .100 mol of the salt is dissolved in 1.0 L of solutionk, the pH of the solution is 8.07. What is the identity of the salt?
Suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. (a) what is the limiting reagent and (b) How many mole of CO2 can be made from this mixture? How many milligrams of CO2?
A gas is compressed from an initial volume of 5.60 L to a final volume of 1.23 L by an external pressure of 1.00 at room atm. During the compression the gas releases 125 J of heat.
A solution is prepared by adding 8.28 grams of an unkown compound to 217 g of cyclohexane (C6H12). This solution freezes at 3.0 degree C. Calculate the molar mass of the compound.
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