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Calculate the osmotic pressure of a 20% sucrose solution given that the molecular weight of sucrose is 342g. (Gas constant= .0821L ATM/Mole °Kelvin and room temperature =25 degrees Celsius)
This Tetris ice cube game is available to play as long as the ice cubes remain ice. The game pieces weigh 178 g, and the heat capacity of the room air,
If 5.02 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
If the specific heat of the salt is 0.663 J/C.g, what is the enthalpy of solution for salt MX if its molar mass is 68.0 g/mol?
A 5.50 g sample of an unknown is dissolved in 251. g of benzene. The freezing point of the solution is 1.02 C below the normal freezing point of pure benzene.
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M
A gas contains 17% O2, 11% CO2 and 72%N2. It is at 1.013 *105 Pa pressure. Calculate the partial pressure of each component
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation? (Molar mass of water is 18.02 g/mol.)
The equation for the combustion of acetone is: 2 C3H6O + 8 O2 ---> 6 H2O + 6 CO2 + 852.6 kcal How much heat will be given off if 0.18 mol of acetone is completely burned?
A nugget of pure gold of 4.90 grams absorbed heat of 270 Joules. determine the final temperature of the Au if the initial temperature = 22.0°C? specific heat of Au =0.129 J/(g·°C).
How many kilograms of NH3 will be produced when 25.0 kg of CaCN2 react with excess water?
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