Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water?

In comparing two reactions, the reaction with the greater activation energy always has (A) the slower rate. (B) the faster rate. (C) the rate that varies less with temperature. (D) the rate that varies more with temperature.

Which elements contain atoms that form colored ions and have more than one positive oxidation state

What volume of a 3.00M NaCl stock solution would you use to make 0.300 L of a 1.25M NaCl solution?

On what basis do we distinguish between substances and separate them from one another?

If the masses of objects increase and their distance from each other remains the same, then the force of gravity between the two objects A) decreases. B) increases. C) remains the same. D) increases then decreases.

Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. the ending substances did not look the same as the starting substances.

How many molecules of H2S are required to form 79.0 g of sulfur

How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution

Which term refers to an electrochemical cell that produces an electric current? A) electrolyte B) voltaic cell C) electrolytic cell D) cathode

How can you determine the valence electrons in an electron configuration?