How many miles are in one light year?

How to determine if a molecule is soluble in water?

Which unit is used for measuring atomic mass? A. atomic mole B. grams/mole C. grams D. atomic mass unit E. atomic mass weight

Which describes radioactive decay of a substance? 1) More of the radioactivity is lost during the first half-life than in later half-lives. 2) More of the radioactivity is lost during the fourth half-life than in the first half-life.

A substance which melts/boils at a fixed temperature is a pure substance. True False

9. Matter is anything that Ms O A. has mass and takes up space. O B. is important to human society. O C. has only one physical state O D.

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?

True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.

Balancing chemistry equations