What type of substance is a catalyst?

A. always a gas

B. always a liquid

C. always a powder

D. A catalyst can be in many forms.

Which describes why the sun is a renewable resource?

An archer aims an arrow and then pulls back on the bow string and bends the bow. which describes the relationship of potential and kinetic energy in this case? a.

What's the relationship between work done and force applied

What is a biological study?

A swimming pool has the shape of a box with a base that measures 21 m by 14 m and a depth of 3.1 m. how much work is required to pump the water out of the pool when it is? full? use 1000 kg divided by m cubed for the density of water and 9.

Which vocabulary term is survival of the fittest

An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s2?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.

A moon with a mass of 6.0 x 10 kg orbits about a planet with a mass of 5.0x 10^24 kg. They are 4.0 x 10^8 meters apart What is the gravitational force between them? The answer is 1.

What is the expression of the chemical composition of a compound?