Which is a substance that is made up of only one type of atom?

O compound

element

O solution

mixture

What type of air pollutant is produced in smoke from a fire? a. Chemical pollutant b. Cumulative pollutant c. Primary pollutant d. Secondary pollutant

The chemical formula for the compound strontium sulfide, which contains Sr2 + and S2 - ions, is

Cold packs are often used to prevent swelling of certain athletic injuries. The pack contains ammonium nitrate and water in separate compartments.

An opened bag of chips expanding as on drives up a mountain is a good example of how volume

How many moles of 0.225 M CaOH2 are present in 0.350 L of solution? Calculate the number of moles of solute (CaOH2) (M CaOH2) (0.350 L) = mol CaOH2

Of the following, which is most likely to result after a farmer sprays his crops with pesticides? A. The crops die. B. The insect population increases. C. The soil dries up and blows away. D. A neighbor's well tests positive for pesticides.

How many liters does the following number of atoms of helium take up? 9.42x10^22 atoms He

Why isn't biuret reagent required for determining the absorption spectrum of hemoglobin?

During which phase change does the arrangement of water molecules become more orderly A.) melting B.) subliming C.) boiling D.) condensing

What's the difference between Mixture and Solution?