Which of the following are considered greenhouse gases? select all that apply.

a. argon

b. methane

c. water vapor

d. carbon dioxide

Which of these is a compound? A. carbon B. carbon dioxide C. Air D. oxygen

The reaction between sulfur dioxide and oxygen is reversible. 2SO2 (g) + O2 (g) = 2SO3 (g) Kc=280mol^-1 dm^3 at 1000K In an equilibrium mixture at 1000K the sulfur trioxide concentration is 6.00 mol dm^-3.

What is the ratio of oxygen atoms to carbon atoms when 32 g of oxygen combine with 12 g of carbon? A - 1:2 B - 2:1 C - 1:1

4. Write the chemical equation for the reaction that occurs when baking soda (NaHCO3) is added to HCI. What is the gas that is formed?

Which of the following solvent pairs could be used in a solvent pair recrystallization (in general, not for this specific reaction) ? For those selected, briefly explain why. For those not selected, briefly explain why not.

What are the two major types of cells that occur in nature?

Why does cotton fabric end up with better dye color than other fabrics?

Compare the advantages and disadvantages of using nuclear energy.

Prokaryotes that can cause diseases are in what domain

This metal is very reactive, has properties similar to magnesium, and is in the same period as bromine. What element is this?