What allows us to observe the different phases of the moon from the earth

In the reaction HBr + Al AlBr3 + H2, which two substances would have a coefficient of 2 if the reaction were balanced? Check all that apply. A. H2 B. Al C. HBr D. AlBr3

The rate law for the reaction 2H2 (g) + 2NO (g) ⟶ N2 (g) + 2H2O (g) is rate=k[H2][NO]2. What is the overall order of the reaction? 3 2 4 7

Calculate the number of joules released when 72.5 grams of water at 95.0 degrees Celsius cools to a final temperature of 28.0 degrees Celsius.

Which of these is an indication that a chemical reaction has occurred? A. Melting of a substance B. Boiling of a substance C. Formation of a gas D. Freezing of a substance

How are inner and outer planet differt?

Acetylene is hydrogenated to form ethane. the feed to the reactor contains 1.4 mol h2/mol c2h2. (find properties of the reactants/products in appendix of book) a.

Several properties of the element magnesium are shown. Which one is a chemical property?

How does the quantity of atp produced as a result of activity by the electron transport chain compare to the quantity produced as a result of glycolysis?

Molybdenum has a molar mass of 95.94g/mol. How many molecules of molybdenum are in 150.0 g of molybdenum

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.