An analysis of 10.0 grams of sample of a compound is found to contain 27.0 percent sodium (na), 16.5 percent nitrogen (n), and 56.5 percent oxygen (o). determine the empirical formula of the compound.

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element