18 Which unit is used to express an amount of thermal energy? (1) gram (3) joule

(2) mole (4) pascal

Why is it incorrect to say that the Molar Mass of H2 is 1 g/mole? Be specific!

Is hydrogen a molecule or compound

Which scientist proposed the idea that electrons could jump from a lower to a higher energy level orbit A. Bohr B. Boyle C. Dalton D. Lavoisier

Percent Composition of KOH

A mixture of n2 (g) and h2 (g) has mole fractions of. 40 and. 60, respectively. what is the density of the mixture at 1 bar and 0 degrees celsius?

Which of the following is an extensive physical property of matter? volume viscosity odor density

When is Ksp determined for a system?

What is the average surface temperature of Uranus

Consider the following statements. A. Molecules of hot water have less kinetic energy than those of cold water. B. For most solids, solubility increases when temperature increases. C.

Which describes the fourth state of matter known as plasma? A It is a liquid containing nuclei and electrons. B It is a gas containing nuclei and electrons. C It is a liquid containing electrons created by fusion.