Calculate the molar mass of the compound
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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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 .)
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.
When thermal equilibrium has been reached, the water and the iron are both at 36.2°C. Calculate the specific heat of the iron. Assume no heat loss to the calorimeter and the density of water is 1.00g/mL. The specific heat capacity of water is 4.18
A student placed 17.0 g of glucose in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached.
You have two water samples. Sample X has a volume of 750 mL and a temperature of 42°C. Sample Y has a volume of 380 mL and a temperature of 42°C. Which sample contains the most heat?
How much heat is required to warm 219 g of ice from -45.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
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