Which will speed up a chemical reaction?

A.

Apply heat.

B.

Increase the concentration of the reactants.

C.

Grind up the substance, so there is more surface area.

D.

all of the above

1. A Force of 48 Newtons (N) is applied to a 16 Kilogram (kg) mass. What is the acceleration of the mass? 2. A Force of 40N is applied to a 200kg mass. What is the acceleration of the mass?

In a series circuit, as more batteries are added what effect does it have on the bulbs in a circuit. Will the bulbs get brighter or stay the same?

1. Briefly Explain why sliding friction is less than static friction.

Which type of simple machine reduces the amount of input force needed?

A log splitting machine was invented to split logs quickly. A motor powers a metal piece that is pushed through the middle of a log. The metal piece used to split a log is an example of what simple machine? a. wedgeb. pulleyc. screwd. lever

Chlorine is the atomic number 17 in the periodic table of elements. What information does the atomic number give you about the element chlorine? A) An atom of chlorine has 17 protons+. B) An atom if chlorine has 17 protons + and electrons-.

Which type of orbital will be occupied by the electrons of highest energy for the In + ground-state ion?

Consider a "crystal" consisting of two nuclei and two electrons. (a) Taking into account all the pairs of interactions, find the potential energy 1 of the system as a function of d.

jason hits a baseball off a tee toward right field. the ball has a horizontal velocity of 10 m/s and lands 5 meters from the tee. what is the height of the tee? show your work, including formula (s) and units.

What is the average amount of energy of motion in the particles of a substance