An ionic substance is found to have the % composition by mass: 82% mercury, 4.9% carbon, and 13.1% oxygen. a. What is the empirical formula of the compound?

b. The molar mass of the compound is determined to be 489.2 g/mol. Determine the “molecular” formula of the compound.

What is a property of a double replacement reaction

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

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory