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A mixture of NACI and sucrose of combined mass of 10.2 g is dissolved in enough water to make up 250 mL solution. The osmotic pressure of the solution is 7.32 atm at 14*C. Calculate the mass percent of NACI in the solution.
Small quantities of oxygen can be prepared in the laboratory by heaing potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3 arrow 2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 26.6 grams of KClO3(s)
if the reaction reaches 90.0 of completion 90.0 of the limiting reactant is consumed determine the partial pressures of
What is the pH of the rainwater assuming all the sulfuric acid is in the liquid water droplet? Hint: The "per m3" means per m3 of air for both [H2SO4] and the cloud liquid water.
a sample of gas occupies 15.0 liters at 4.00 atmospheres and 300 k. what is the new volume of the gas if pressure is
re-establish equilibrium conditions as described: The pressure if the system is increased by decreasing the total volume. a) shift to the left b)shift to the right c) no change
How much heat is required to warm 221 g of ice from -44.7°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?
Calculate the change in entropy when one mole of ice at ?10.0°C and 1 atm is converted to liquid water at ?5.0°C and 1 atm
Draw the structure of the product likely to be obtained from the reaction between acetoacetic ester, bromobenzen & 2 molor equivalents
Find the enthalpy change for the chemical reaction below PCl5(g) ----> PCl3 (g) +Cl2 From the following equations:
calculate the velocity of electrons emitted from molecules in which the binding energies are 10ev, 100ev, and 500ev
When 3.00 mol of benzene is vaporized at a constant pressure of 1.00 atm and at its normal boiling point of 80.1°C, 101.8 kJ are absorbed and P?V for the vaporization process is equal to 8.70 kJ then
if you dilute 750.00 ml of a 4.117 times 10-4 m solution into a 2.00 l volumetric flask and fill to the line with water
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