The primary unit of length in the metric system is the:

kilometer

meter

millimeter

centimeter

What factors trigger the evolution of a species? A. Human opinions of evolution B. Mutation C. Natural Selection. D. Unchanging Environment

For each pair of compounds below, identify the one that would be expected to have more ionic character. explain your choice.

A nickel is about 2 millimeters thick, or 2/1,000 of a meter how many nanometers is this

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Describe the energy transformation of the teacher rubbing the match on the sandpaper.

Bacteria and viruses are inactivated by temperatures above 139 ∘C in an autoclave. An autoclave contains steam at 1.00 atm and 100 ∘C.

How many nitrate ions are in 387.4 grams of calcium nitrate?

Tin or silver more reactive

Chemical reactions that release energy possess reactants with lower energy than their products. True or False Heat is the most common form of energy absorbed or released in chemical reactions. True or False

What is the reason for the low solubility of LiF (0.27 g per100 ml H2O) compared to CsF (367 g per 100 ml H2O) ?

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? A.) increasing temperature B.) increasing pressure C.) decreasing surface area D.) decreasing temperature