The number of moles of the reagent in excess can be used to calculate the moles of the products of the reaction.

True

False

Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. Which statement best describes these three components of air? They are all classified as pure substances. They cannot react with another substance.

The molar mass of Ba (OH) 2

How do you describe the Doppler effect and how it relates to the distance of a galaxy from Earth?

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? A. simultaneous observation B. polarization C. fluorescence D. higher magnification

What happens when particles with a larger mass diffuse more slowly than particles with a smaller mass

Penny bought a club moss plant for her water garden. She needs to know how tall the plant will grow so she knows how much space it will need.

Which of the following is not a producer? Mushroom Tulip Grass Pine Tree

Phosphorus forms a number of oxohalides, x3po, in which x may be a f, cl, or br atom. the most common of these, phosphoryl chloride, is obtained as follows:

Which statement is true about the speed of light waves in a medium? a. Depends on the temperature of the light wave b. Decreases with a decrease in density of medium c. Decreases with an increase in density of medium d.

What's a certain indicator that a molecule is polar? the molecule has a nonpolar covalent bond and the dipole is cancelled due to symmetrical arrangement of atoms the molecule has a polar covalent bond and the dipole is cancelled due to symmetrical