What are two types of cold air masses that influence the weather in North America? Name them and describe their humidity.

When a non metal gains or shares by two electrons, its valency will be

When the oxidation number of an element decreases over the course of a reaction, that element has been ... A ionized. B. Oxidized. C. redoxed, D. reduced

The reaction of a lewis acid with a lewis base would most likely br accomplished by an increase in which item A. couldn't bonds B. hydronium ions C. electron pairs D. hydroxide ions

What is the mass of silver in 4.3g AgNO3?

Rocks formed from particles deposited by wind and water

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?

Individuals who work full time and those who work part-time enjoy basically the same number of paid leave benefits. True False

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.