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Freon-12 is utilized as a refrigerant in central home air conditioners. The rate of effusion of Freon-12 to Freon-11 molar mass= 137.4 g/mol is 1.07:1. Explain the formula of Freon-12 is one of the following- CF4, CF3Cl, CF2Cl2, CFCl3 and CCl4. Explain which formula is correct for Freon-12?
The density of chloroform, a widely used organic solvent, is 1.4832 at 20 . How many milliliters would you use if you wanted 119.0 of chloroform.
a gas occupies 4.04 l at 860 torr and 10c. what volume will it fill if the pressure is changed to 731 torr and the
A certain protein was found to contain 0.230 % iron by mass. Determine the minimum molecular mass of the protein.
calculate the pressure of the dimer when the total pressure is .725 atm at equilibrium. 2ch3cooh(g) (ch3cooh)2(g) Monomer Dimer
It was found that 19.33 mL of an HI solution are needed to react completely with 320 mL of a LiOH solution that has a pH of 11.87. What is the molarity of the HI solution
Draw the exo and end product for the reaction of cyclopenadiene and malice anhydride
Express the rate of the following reaction equation in terms of the rate of concentration change for each of the three species involved: 2NOCl (g) = 2NO (g) +Cl2 (g)
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 25.18°C to 47.53°C. What is the enthalpy change, in kJ/g of KOH dissolved in the water? Assume that the solution has a specific heat capacity ..
The formula of a complex formed by a reaction such as M + nX = MXn can be determined by the method of continuous variations. The absorbances of a series of solutions of varying composition are measured at the wavelength at which the complex shows ..
Cholesterol in blood is measured in milligrams of cholesterol per deciliter of blood. Hospital blood banks normally store blood in samples of 500 milliliter polyethylene bags.
A 10.0 mL aliquot of this weak acid solution was titrated with a 0.0498 M NaOH solution. The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid
Calculate the expected vapor pressure at 25 OC for a solution containing 158.0 g of nonelectrolyte sucrose (MW = 342.3 g/mol) in 643.5 mL of water. At 25 OC, water has a density of 0.9971 g/mL and its vapor pressure is 23.76 torr.
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