Blog

If 49.00 mL of acetic acid was titrated using 0.340M NaOH solution.  The solution turned faint pink after adding 21.06 mL of NaOH.  What is the molarity of the acetic acid?

The dimensions of a rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as

What is the oxidation state of oxygen in H2O2?

When 1.92 ´ 10–6 kg is divided by 6.8 ´ 102 mL, the quotient equals

Bases can harm you.

The number of significant figures in the measurement 0.00305 kg is

For the reaction represented by the equation Cl2 + 2KBr ® 2KCl + Br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.

A 1.00 L sample of a gas has a mass of 1.92 g at OoC and 760. mm Hg. What is the molar mass of the gas?

Given the following data, calculate the energy released by the following reaction:initial temperature of 50.g of aqueous solution #1 and also of 50.g of aqueous solution #2  = 19.0oCfinal temperature after mixing the2 solutions together: 28.2oCAssume that the calorimeter has no heat loss, the density all solutions = 1.00g/mL, and that the specific heat of the resulting aqueous solution is 3.10J/goC.

Which of the following is not a chemical change?