Given the balanced equation representing a reaction:

F2 (g) + H2 (g) = = > 2HF (g)

What is the mole ratio of H2 (g) to HF (g) in this reaction?

(1) 1:1 (3) 2:1

(2) 1:2 (4) 2:3

Based on the kinetic molecular theory, which of the following statements is correct about the particles in a sample of gas? They have negligible kinetic energy. There is negligible force of attraction between them.

Which of the following are part of kinetic-molecular theory? Check all that apply. The particles in a solid do not move. The particles in a liquid are moving past one another constantly. The particles in gas move freely in all directions.

Which of the following functions as a form of insulation and long term energy storage? A. Carbohydrates B. Nucleic acids C. Lipids D. Proteins

5.2 cm of a metal is found to weigh 46.6 g on a three decimal balance. What is the density of the metal, expressed to the proper number of significant figures? 9 g/cm [2] 9.0 g/cm 8.96 g/cm 0.11 g/cm [5] 0.112 g/cm

A gas sample of argon, maintained at constant temperature, occupies a volume of 500. l at 4.00 atm. what is the new volume if the pressure were charged to 8.0 atm

For an endothermic reaction at equilibrium, the addition of a catalyst Group of answer choices causes no shift causes a shift to the right causes a shift to the left makes it an exothermic process

The atomic number of an element best corresponds to which of the following? O The mass of an atom of that element. O The number of electrons orbiting the nucleus of an atom of that element.

If a dinosaur once lived in mexico, and i now live in arkansas, can i be drinking the same water the dinosaur did?

Dough to which potassium bromate has been added rises better, producing a lighter, larger volume loaf.

Each enzyme has an optimal temperature and pH that it works best in. If enzyme ABC works best at pH 7, but ABC is in a cell with a pH of 9, will it catalyze more or less reactions?