given the lewis structure of asf4– below, what are the approximate bond angles in the ion? check all possible answers.

What’s the scientific notation for the number 6,840,000,000

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.

How have the greenhouse gasses increased from the year 2000 to 2018