Which formula represents a polar molecule?

(1) O2

(2) CO2

(3) NH3

(4) CH4

What is the equilibrium constant for the following reaction? 3A + 2B 2C

The following ionization energies were found for an unknown element: - 1st Ionization Energy 9.32270 eV - 2nd Ionization Energy 18.2114 eV - 3rd Ionization Energy 153.89661 eV - 4th Ionization Energy 217.

Which salt is produced when sulfuric acid and calcium hydroxide react completely? (1) CaH2 (3) CaS (2) CaO (4) CaSO4

Ammonium perchlorate is the solid rocket fuel used by the U. S. Space Shuttle. It reacts with itself to produce nitrogen gas, chlorine gas, oxygen gas, water, and a great deal of energy. What mass of water is produced by the reaction of 9.

What are the products in the following chemical reaction? methane + oxygen → carbon dioxide + water Select one: a. carbon dioxide + water b. methane + oxygen c. oxygen + water d. carbon dioxide + methane

23491pa undergoes beta decay. what is the mass number of the resulting element?

What is the Mass in grams of 3.1 mol of mercury

A helium balloon contains 0.48 g of helium. Given the molecular weight of helium is 4.0g/mol, how many moles of helium does it contain?

Three differences between a science and a pseudoscience

Why is it illegal to manufacture fireworks without a license