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At 40°C, the vapor pressure of heptane is 92 torr. If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
0.891
0.435
0.487
0.109
1.109
A stock solution is prepared by adding 20 mL of 1.21 M AlCl3 to enough water to make 72 mL. What is the Al3+ concentration of 30 mL of the stock solution
What is the change in internal energy of the system, delta U. The force of gravity on a mass m is mg, where g is the constant acceleration of gravity (g=9.80 m/s^2).
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.
the ksp of agcl is larger than the ksp of k2cro4,yet k2cro4 is more soluble than agcl. explain the fallaciousness of the statement.
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
One mole of monoatomic ideal gas expands adiabatically at initial temperature T against a constant external pressure of 1 atm. from one litre to two litre.
what is the balanced equation of aluminum reacts with ammonium perchlorate to produce aluminumn oxide, aluminum chloride, nitrogen monoxide, and 110g of water.
Compute A current is drawn from the cell until 1.20 grams of Ag have been deposited at the Ag electrode. Determine the value of E for the cell at that stage of operation.
calculate the mass of MgCO3 precipitated by mixing 10.0 mL of a 0.200 M Na2CO3 solution with 5.0 mL of a 0.0450 M Mg(NO3)2
iodized salt is a mix of NaCl and KI. if the content of 75 ppm what is the iodine content?
Calculate the mass of water formed by the complete reaction of 758 g of propane (C3H8) with excess oxygen
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