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When 6.07 g of an unknown, non-volatile, non-electrolyte, X was dissolved in 100 g of Benzene, the vapor pressure of the solvent decreased from 100 torr to 93.8 torr at 299 K. Calculate the molar mass of the solute, X.
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5COOH) and 0.15 M sodium benzoate (C6H5COONa). Ka= 6.5 x 10^-5 for benzoic acid. Please show your work for how you got this.
A 5.0 L sample has a pressure of 5.0 atm. What is the volume of the anesthetic given to a patient at a pressure at a pressure of 1.0 atm?
Carbon monoxide and water vapor, each at 190 Torr, were introduced into a 250 mL container. When the mixture reached equilibrium at 690 ?C, the partial pressure of CO2(g) was 108 Torr.
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
Which of the following has the smallest mass? a. 3.50 x 1023 molecules of I2
Need help figuring out the proper steps on how to solve -What volume of 1.25M HCl in liters is needed to react completely
Based on the solubility rules, which one of these compounds should be soluble in water?
When you heat up popcorn, it loses water explosively and it pops. suppose a kernel of corn, weighing 0.125 grams weighs only 0.106 grams after popping.
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution
Assume also that on a yearly basis the lake is completely mixed, and that the small river flowing into and out of the lake can be neglected as far as acidification is concerned. How many years will it be before the lake will reach a pH of 5.0?
how many joules are required to melt a 325 degrees Celsius ice cube at 0 degrees Celsius and to warm the liquid to 15 degrees Celsius
energy to heat a certain sample of pure silver from 12.0 C to 18.2 C. Calculate the mass of the sample of silver.
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