1: consult an aufbau diagram. how many electrons would make the d shell complete?
a. 1
b. 2
c. 6
d. 10
2. consult the periodic table. an electrically neutral atom has the following electron configuration: 1s^22s^22p^63s^23p^4. what is the name of this atom?
a. sulfur b. phosphorus c. chlorine d. selenium

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.