General Chemistry Answers

Home ice cream makers use ice to cool a concentrated NaCl solution below the normal freezing point of water. What molal concentration of salt is needed to lower the freezing point to -4.25 C? Assume that the solution is ideal, and that the van't Hoff factor for NaCl is the expected (ideal) value.

What volume of a 1.1 M solution of NaNO₃ contains exactly 0.398 g of the compound?

A solution is prepared by mixing 2 g of FeCl₃ with enough water to make 50 mL of solution. Calculate the molarity of the solution.

How many grams of benzoic acid (C₆H₅COOH) are contained in a 125.0 mL solution at 0.26 M concentration?

1. Camphor (C10H1602) freezes at 175 °C, and it has a particularly large freezingpoint-depression constant, K = 40.0 °C/m. When 0.086 g of an organic substance of unknown molar mass is dissolved in 22.01 g of liquid camphor, the freezing point of the mixture is found to be 1.7 °C below of pure camphor. What is the molar mass of the solute?

2. You add 0.25 g of an unknown solute to 11.1 g of benzene. The boiling point of the benzene rises from 80.10 °C to 80.46 °C. What is the molar mass of the compound? Ko=2.53 °C /m 3. A solution of an unknown non-dissociating solute was prepared by dissolving 0.300 g of the substance in 40.0 g of CC14. The boiling point of the solution was 0.357 °C higher than that of the pure solvent. Calculate the molar mass of the solute. Ko=5.02 C/m

How many grams of hydrogen chloride would it take to completely react with 20.0g of magnesium.

Calculate the pOH of a solution with a pH of 4.8.

Determine the [H3O + (aq)] of a solution with a pH of 3.45.

Calculate the molarity of a solution when 600 grams of NaC2H3O2 are added to 2 L of solution

Dilution process is accompanied with releasing or absorbing heat true or false