A compound is 52.0% Zinc, 9.6% Carbon, and 38.4% Oxygen.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?

Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (