a sample of unkown compound with a mass of 2.876g has the following composition 66.07 percent carbon,6.71 percent hydrogen,4.06 percent nitrogen and 23.16 percent of oxygen what mass of each element in this compound

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

How many atoms are in 2 moles of phosphorus?