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At a given temperature you have a mixture of benzene (VP = 745 torr) and toluene ( vp= 290 torr). The mole fraction of benzene in the solution is 0.590. Assumeing ideal behavior, calculate the mole fraction of toluene in the vapor above the solution.
Which one of these is liquid bromine, fluorine gas, or oxygen gas?
When 1 mole of H2(g) reacts with C2H4(g) to form C2H6(g) according to the following equation, 137 kJ of energy are evolved. What is the value of q?
Estimate the heat released when ethene CH2 CH2 reacts with hydrogen gas to give CH3CH3.
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
A student needs 65g of butonic acid for a reaction. The student has 450g of a 43% in ethanol.
If the pressure exerted by ozone, O3, in the stratosphere is 3.0*10^-3 atm and the temperature is 250 K, how many ozone molecules are in a liter?
How many molecules of triclosan are in a tube of toothpaste?
How many kilowatt-hours of energy are necessary to heat the air in the house from 5degree C to 25degree C
A 0.682 g sample of an unknown weak monoprotic organic acid, HA was dissolved in sufficient water to make 50 milliliters of solution and was titrated with a 0.135 molar NaOH solution.
Calculate the internal energy change (deltaU) for vaporization of 100 g of Cl2(liq.) at this temperature and 1 bar? (b) Calculate its molar entropy change (AS) for vaporization at this condition
Some bacteria are able to harvest 1000-nm light. What is the energy (in kilocalories or kilojoules) of a mole (also called an einstein) of 1000-nm photons?
how many moles of co(nh2)2 are present in 150 g of water, if the freezing point of the solution is -4.02 degrees c?
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