Which unit can be used to express the rate of a reaction?

A. m / s

B. ml/g

OC. g/ml

D. mL/mol

E. s/mL

2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produced by 10.0 g of iron and enough steam. 3Fe (s) + 4H2O (g) - --> Fe3O4 (s) + 4H2 (g) a. 0.239 mol H2 b. 239 mol H2 c. 2.

the pressure on 325 ml sample of oxygen gas was determined to be 0.768 atm. what will the volume of the shape be at 1220 torr?

What is the number of magnesium atoms that equal a mass of 24.31 amu?

If 3.64g of sand is separated from 5.25g of a mixture of salt and sand what is the percentage of sand in the sample

Match the term with the definition. Match Term Definition Condensation A) A phase change from a liquid to a solid Evaporation B) A phase change from a liquid to a gas Sublimation C) A phase change from a solid to a gas Freezing D) A phase change

Milk of magnesia is a base. What happens when you drink milk of magnesia for an upset stomach? A) It raises the pH of your stomach. Eliminate B) It lowers the pH of your stomach. C) It cleanses the stomach of harmful, painful bacteria.

Which of the following can be classified as an empirical formula? Why? A. S2Cl2 B. C6H10O4 C. Na2SO3

A student records the value 1.5 atm on a data table. The student is measuring what?

How do you percipitate things from solution to telluric acid?

The energy needed to get a reaction started is the a. enzyme energy. b. activation energy. c. catalyst energy. d. chemical energy.