If I have 9 moles of a gas at a pressure of 8.7 atm and a volume of 18 liters, what is the temperature?

What are the levels of organization in a biome, from largest to smallest

A lab group reacts sodium oxide (Na2O) with hydrochloric acid (HCl) to produce sodium chloride (NaCl) and water (H2O).

7. A nonpolar covalent bond (i. e., pure covalent) would form in which one of the following pairs of atoms? A) Na Cl B) H Cl C) Li Br D) Se Br E) Br Br

How does most of the water in the water cycle move from lakes and rivers directly back into the atmosphere? A. precipitation B. evaporation C. condensation D. respiration

A _ is a possible explanation for a problem using what you know and what you observe a-conclusion b-thesis c-theory d - hypothesis

4 Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have (1) less energy and the same charge (2) less energy and a different charge (3) more energy and the same charge

Chemical systems in nature tend to undergo changes toward

What energy drives the rock cycle that makes it work?

Who wants to hang out?

Atoms whose outermost energy level is not filled may gain or lose valence electrons. What do you call these atoms?