The ground state electron configuration for sodium is:

a. 1s2 2s2 2p8.

b. 1s2 2s2 2p6 3s2 3p6 4s1.

c. 1s2 2s2 2p6 3s2 3p4.

d. 1s2 2s2 2p6 3s1.

Explain what is meant by the scientific method.

The chemical formula for vinegar is C2H4O2 what is the percent composition for each of the elements in vinegar?

Which particles that make up an atom are involved in nuclear reactions? protons only protons and neutrons electrons only electrons and neutrons

Magnesium oxide (MgO) forms when the metal burns in air. (a) If 1-25 9 of MgO contains 0.754 g of Mg, what is the mass ratio of magnesium to oxide? (b) How many grams of Mg are in 534 g of MgO?

In the benzoin oxidation, the initial blue color changes to green as the reaction proceeds. why?

If the two charges represented in the figure were brought near each other, they would a. have no effect on each other. b. repel each other. c. cause static discharge. d. attract each other.

A gas tank holds 20000 liters at 850 torr. If the temperature remains constant, what will the volume, in L, of the gas be at standard pressure, 760 torr?

Which Group (column on the Periodic Table) is the least soluble?

When ironing clothes, the primary method of heat transfer is A) conduction. B) convection. C) insulation. D) radiation.

What type of process occurs when solidified wax is converted to liquid wax on heating? endothermic exothermic decomposition reversible disintegration