NEED HELP ASSP!! (If you could show all the steps or work to get the answers that would be greatly appreciated)

62. A compound was found to contain 49.98 g of carbon and 10.47 g of hydrogen. The molar
mass of the compound is 58.12 g/mol. Determine the molecular formula.
63. A colorless liquid
composed of 46.68% nitrogen and 53.32% oxygen has a molar mass of
60.01 g/mol. What is the molecular formula?
64. When an oxide of potassium is decomposed, 19.55 g of K and 4.00 g of O are obtained.
What is the empirical formula for the compound?
65. Challenge Analysis of a chemical used in photographic
developing fluid yielded the percent composition data shown
in the circle graph to the right. If the chemical's molar mass is
110.0 g/mol, what is its molecular formula?
66. Challenge Analysis of the pain reliever morphine
yielded the data shown in the table. Determine
the empirical formula of morphine.