All of the elements in the periodic table have just recently been discovered.

a. True

b. False

The decomposition of in solution in carbon tetrachloride is a first-order reaction: The rate constant at a given temperature is found to be. If the initial concentration of is 0.200 M, what is its concentration after exactly 10 minutes have passed?

Would heating water increase or decrease its ability to dissolve a solute?

Lithium oxide is used in ceramic glazes. Oxygen has 6 electrons in its outer shell. How many outer electrons does each lithium atom lose when bonding with oxygen according to the formula Li2O? a. 1 c. 3 b. 2 d. 4

Using the periodic table, choose the more reactive metal. (hint: reactivity of Ga > Al: reactivity of Zn > Ga) Pt or Ag

How much heat energy in megajoules is needed to convert 7 kg of ice at - 9 seat to water at 0C

What would happen to life if earth were in a different location within the solar system

Substance that undergoes a change in a chemical reaction is a. a product c. a reactant. b. a chemical. d. an enzyme.

List the number of protons, neutrons, and electrons in Iodine-127. (atomic number is 53)

At approximately what temperature will 40g of argon gas at 2 atm occupy a volume of 22.4L a) 600K b) 550K c) 270K d) 140K

Why does light that passes through our windows at home not display the beautiful colors