Who was John Dalton?

A. A schoolteacher who published ideas about the atom

B. The scientist who discovered the electron

C. The physicist who came up with the oil-drop experiment

D. A physicist who studied the nucleus of the atom

What is the difference between a period and a group in the periodic table?

What are the two factors that will lead a cell to undergo plasmolysis?

If you have 85g of sulfur dioxide at STP, how many moles do you have?

How many atoms are in 0.0303 mol K?

Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system? The average kinetic energy of the particles in the mug decreases. The average kinetic energy of the particles in the coffee increases.

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is