Find δerxn for the combustion of naphthalene. the heat capacity of the calorimeter, determined in separate experiment, is 5.11kj/∘

c.

A Car is lifted a certain distance in a service station and therefore has potential energy relative to the floor. if it was lifted twice as high, how much potential energy would it have?

True or False? Atoms of the same element can have different numbers of neutrons and electrons.

What happens when a force exerted on an object causes the object to move? O Work is done on the object. The object's energy is destroyed. O Potential energy is created. O Kinetic energy is created.

Do simple sugars provide short term energy?

13. Which of the following accurately describes circuits? A. In a series circuit, the current can flow through only one path from start to finish. B. In a parallel circuit, the same amount of current flows through each part of the circuit. C.

A 26-g steel-jacketed bullet is fired with a velocity of 630 m/s toward a steel plate and ricochets along path CD with a velocity 500 m/s.

A small boat is carrying four people across a river. Without any paddling, the boat moves downstream at a steady speed of 5 m/s. If the average weight of the four people is 60 kg, then what is the speed of the boat after one person gets?

Does temperature affect the dissolving phase?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

In pea plants Round (R) is a dominant trait and wrinkled nose (r) is a recessive trait. Which combination would result in wrinkled seeds? 1. RR 2. Rr 3. rr 4. ww