What is a reasonable estimate for the number of neutrons in arsenic

The density of gold is 19.3g/cm3. what is the volume of a 13 g gold nugget? ( density: d= m/v)

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer