Which of the following is a pure substance?

a. soda

b. gun powder

c. sugar water

d. steam

Are these compounds - methane and CH4 ionic or covalent?

If 7.89 mL of a sodium hydroxide solution can neutralize 13.1 mL of 0.293 M HCl, what volume of 0.765 M HBr can be neutralized by 15.4 mL of the same sodium hydroxide solution?

When you reacted the zinc with the hydrochloric acid, you collected the hydrogen gas by water displacement.

Bronstead-Lowry Acid and a Bronstead-Lowry Base. How are these different from Arrhenius Acids and Bases?

In one kind of nuclear reaction, two nuclei fuse, or join together, to form a larger nucleus. This kind of reaction happens only at very high pressures. Explain why such high pressures are necessary to cause these reactions to occur.

How many moles are in. 12 grams of gold.

When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) gains one electron and becomes a negativelycharged ion (2) gains three electrons and becomes a negativelycharged ion (3) loses one electron and becomes a

Based on what you know about matter, explain why the food coloring mixes at different rates

What does the variable A stand for in the Arrhenius equation? A. activation energy B. frequency factor C. rate constant D. reactant concentration

Name 3 sets of elements that have been added to the periodic table since mendeleev's time