How many valence electrons do the alkaline-earth elements have?

a. 1

b. 2

c. 7

d. 8

Choose the pure substance from the list below. Choose the pure substance from the list below. tea a casserole carbon monoxide pomegranate juice sugar water g

Which products are formed whem aluminum is added to a silver chloride solution?

What is the charge for an ionic compound?

An atom of an element has a total of 12 electrons. An ion of the same element has a total of 10 electrons. Which statement describes the charge and radius of the ion? 1.

Solvents at disposal: Hexanes, Toluene, dichloromethane, diethyl, ethyl acetate, methanol, water, acetic acid From the solvents, choose a single solvent that would give the best chance of separating benzophenone, diphenyl methanol and biphenyl using

Which orbital notation represents a noble gas in the ground state

c. When we heat water up by the Bunsen burner, what temperature is the boiling water? After 10 minutes

Assuming that air contains 78 percent N2, 21 percent O2 and 1 percent Ar, all by volume. How many molecules of each type of gas are present in 1.0 L of air at STP?

Two children are playing tag. Child A who is doing the chasing can run 100m in 24 seconds Child B is running away from child A and can run 64m in 21 seconds.

What ion does a base increase