Select the correct answer. How does an atom become a positively charged ion? A. By gaining one or more electrons B. By gaining one or more neutrons C. By losing one or more electrons D. By losing one or more neutrons

Calculate the molarity of a solution that contains 20.275g calcium bromide dissolved in 575 mL of solution

Water has what type (s) of properties? a. physical onlyB. chemical onlyC. physical and chemical

What evidence do you have about when some metal objects rust?

If you are asked to compare matter in solid, liquid, and gaseous states, which statement best defines a gas? A). highest energy, highest molecular motion, and least dense packaging of molecules B).

Explain why some parts of our planet have very little seasonal change. Where are these places?

Compound Z has a MW of 100. Your lab partner weighed 25 grams of compound Z and dissolved it in water to a final volume of 1 liter. What is the concentration of the solution expressed as molarity?

The reaction between iodine and carbon dioxide to yield diiodine pentoxide is exothermic. How could the yield of diiodine pentoxide be decreased?

6. Which statement best describes an igneous intrusion? A. Magma explodes to the surface and forms a smooth outer layer of rock. B. Igneous intrusions form when ice crystals splash into lava. C. Magma is exported to an open area and forms iron. D.

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not

The type of energy present in the bonds between atoms is