Guaifenesin (C1oH1404) is a common over-the-counter expectorant. What mass (in g) of oxygen is in 200. mg dose of Guaifenesin? (Molar mass of C10H1404 = 198.2 g·mol-1)

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.