A student is asked to determine the chemical formula for the compound Barium chloride. When writing the chemical formula, what question will the student need to
ask to determine the correct formula?
What period does barium belong to?
Are barium and chlorine a metal and nonmetal?
What is the state of matter of each element that comprises the final formula?
What are the charges of each atom?

Are barium and chlorine a metal and nonmetal?

Explanation:

I had the same question, and my class reviewed the test and this was the answer to this question.

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation:

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).