How many Elements are in the periodic table? (Trivia, I know this though)

What process in stars played a role in the formation of the universe?

What would happen if the equilibrium of a weak acid dissociation reaction were upset? A. The reaction would shift to balance the change. B. The Ky of the reaction would change. C. The reaction would not return to equilibrium. D.

The silicon needles on new blood analyzing devices can painlessly collect samples of blood with volumes of about 100 nanoliters. How many samples of this size would fit in a conventional 5 ml hypodermic needle?

Which of the following postulates of John Dalton's modern atomic theory, published in 1800, is now known to be incorrect? a. All atoms of a particular element are identical. b. All matter is composed of tiny particles called atoms. c.

Describe the type of weather during the summer and winter that one might expect in this climate.

Carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the following chemical equation. CS2 (l) + 3O2 (g) → CO2 (g) + 2SO2 (g) a. If 1.00 mol CS2 reacts with 1.00 mol O2, identify the limiting reactant. b.

What is the meaning of monovalent?

What is a neutron and what charge does it have

Examples of mechanical and physical weathering in our neighborhoods

Balance the redox reaction KMNO4 + NH3 - --> KNO3 + MNO2 + KOH + H2O