General Chemistry Answers

If the [H^ + ] concentration of a solution is 4.3 * 10 ^ - 10 M, what is the pH of the solution?

The average molecular speed in a sample of  CH4 gas at a certain temperature is 685 m/s.

The average molecular speed in a sample of  Xe gas is m/s at the same temperature.

Calculate the grams of HCl (hydrochloric acid) in 25.0 mL of solution

whats the concentration of hydrogen in bleach 

A tube of 60-mm outer diameter (OD) is insulated with a 50- mm layer of silica foam, for which the conductivity is W/(m · ℃ ), followed with a 40-mm layer of cork with a conductivity of 0.05 W/(m · ℃ ). If the temperature of the outer surface of the pipe is 150 ℃ and the temperature of the outer surface of the cork is 30 ℃, calculate the heat loss in watts per meter of pipe

In the DNA of E.coli, the mole ratio of adenine to cytosine is 0.7. If the number of moles of adenine in the DNA is 350000, the number of moles of guanine is equal to:

350000

500000

225000

700000

In an experiment, 1.000 g of a hydrocarbon, A, was burned completely in oxygen to produce 3.143g of carbon dioxide and 1.284 g of water. The molar mass of the hydrocarbon, A, is 84.0 g mol–1.

Calculate the empirical formula, A.

What is the freezing point depression when 155g if Iodine (I2) crystals is

added to 1, 200g of benzene?

KfBenzene = 5.12℃/𝑚 FPBenzene = 5.51℃

How much mass (in grams) does one trillion atoms (1.0x1018) of zinc have? (Hint: Use Avogadro's number to determine moles) (Given: atomic mass of Zinc = 65.4 g/mol)

sodium chlorate decomposes to produce table salt and oxygen gas. if 325g of sodium chlorate will produce how many grams of oxygen gas how many grams of table salt is produced when 75.0 grams of oxygen gas is produced