4. A sample of Dicoumerol was analyzed and determined to contain 0.739 g of carbon, 0.0415 g of hydrogen and 0.219 grams of oxygen. Calculate the percent composition.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.