Chemistry Answers

why the dilution process is accompanied by energy absorption?

4. Calculate the boiling point of an aqueous solution that contains 20.0 mass % ethylene glycol (C2H6O2, a nonvolatile liquid).

A solution prepared from 0.3 g of an unknown nonvolatile solute and 30 g CCI, has a boiling point of 0.392 °C higher than that pure CCl. What is the molecular weight of the solute?

A solution of 30 percent ethanol (C2 H3 OH) by weight has a density of 0.96 g/mL at 25 percent C. Find its molality and molarity?

Both ethylene glycol and water are liquids. How do you know which one is the solvent and which one is the solute? Explain your answe

1. The vapor pressure of pure water at 110oC is 1070 torr. A solution of ethylene glycol and water has a vapor pressure of 1.10 atm at the same temperature. What is the mole fraction of ethylene glycol in the solution?

A solution of hydrochloric acid in water is 60.0% HCl and 40% water, H2O, by weight. The solution has a density of 1.19 g/mL. What is the

b. Molarity of the water (with hydrochloric acid as the solvent)

c. Molality of water in hydrochloric acid?

d. mole fraction of hydrochloric acid?

e. mole fraction of water?

Write the equation for this reaction, then balance the equation.

B. Calculate the grams of lead(II) iodide that can be produced from 5.00 moles of

potassium iodide.

C. Calculate the grams of lead (II) iodide that can be reproduced from 75.00

grams of potassium iodide

How many grams of solid calcium hydroxide, Ca (OH)2 are required to react with 350 mL of 0.40 mole HCl?

A. If 2.8 moles of Propane reacts with excess Oxygen gas how many grams of CO2 will be formed?

B. How many grams of Oxygen gas will completely react with 3.8 moles of Propane?

C. If 25 g of C3H8 reacts with excess Oxygen, how many moles of water will be formed?

D. If 38 g of water are produced in the reaction, how many moles of CO2 were produced