The tectonic plates of the lithosphere move across Earth's surface. What is the approximate rate of plate movement?

a few meters per week

a few inches per month

several meters per day

a few centimeters per year

Joseph divides 8.64 by 2.0. How many significant figures should his answer have? one two three five

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

Why do polar and non polar molecules have different properties?

A compound contains only c, h, and n. it is 58.51% c and 7.37% h by mass. helium effuses through a porous frit 3.20 times as fast as the compound does. determine the empirical and molecular formulas of this compound.

If the hydrogen ion concentration of a solution is 10-10m the solution is

A solution of potassium cyanide, KCN, is made by dissolving 3.2 g of KCN in water. When this solution reacts with excess hydrochloric acid, HCl, it produces 0.30 g of poisonous hydrogen cyanide gas, HCN.

When carbon undergoes sp2 hybridization it forms

Give the formula for molarity

A 54-gram sample of an unknown material has a volume equal to 20 cm3. Based on its density, could the sample be aluminum? Explain

What type of reaction takes place when atoms or molecules rearrange to form new substances?