How long have people studied chemistry?

A. Since chemicals were discovered

B. Since fire was discovered

C. Since the atom was discovered

D. Since gravity was discovered

Molecule: Br2 and Br2. Is it polar or nonpolar?

What type of attraction occurs when water molecules attract other types of molecules (other than water) ?

Trisha and her lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide. In one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid.

One isotope of a metallic element has a mass number of 65 and 35 neutrons in the nucleus. the cation derived the isotope has 28 electrons. write a nuclear symbol for this element

You have 1 L of soda your class can hold 400 ML of soda how many glass of the soda can you get out of one L

What is a polar molecule

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.