What is the mass in grams of copper chloride dihydrate (CuCl2·2H2O) required to prepare 40.0 mL of a 0.10 M CuCl2 solution? Do not include units in the answer box or it will be counted wrong. Record your answer to two decimal places.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1