1. How many moles of oxygen gas are required to react with 15.56 moles of hydrogen gas? (2 pts.)

2H2 (g) + O2 (g) → 2H2O (g)

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic structure. [6 mark]

According to the kinetic-molecular theory, how do gas particles behave? Group of answer choices They are in constant motion. They have different shapes. They have different colors. They have constant contact with each other.

Which is a way you would expect two animals of the same species to differ? A. the majority of their genetic material B. their ability to reproduce with one another c. the size of animals that reach adulthood D. their physical traits such as coloring

Elle is pushing a box of mass 7.0 kilograms with the force of 25 newtons. If the force of friction is 2.6 newtons, what is the value of acceleration of the box?

Plasma is often in stars, which are likely to contain?

Should a bartender use ice and scoop directly from ice machine or use an ice holding device and scoop to make drinks and refill drinks from

What classification should this reaction have? 4Al + 3O2 → 2Al2O3

If you start with 100 grams of a radionuclide, how much will you have after two half-lives have passed?

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?