When a chemical reaction is at equilibrium,

the concentration of each reactant and the

concentration of each product must be

(1) constant

(2) variable

(3) equal

(4) zero

When heat, light, or sound is given off or absorbed, is it a chemical change, chemical property, physical change, or physical property?

A table of properties of several compounds is provided.

How can acceleration occur?

What effect does a decrease in temperature have on the overall rate of a chemical reaction?

80.0 liters of oxygen gas is collected over water at 50 degrees celcius. the atomsphereic pressure in the room is 96.00 kPA. what is the partial pressure of oxygen?

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H A) O-H B) C-H<0-H C) H-H D) C-H E) HH

How fast do p waves travel?

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

The electric force between two charged objects is 0.24 newtons. If the distance between them is increased by a factor of 4, what will be the new force? A. 0.015 newtons B. 0.03 newtons C. 0.06 newtons D. 0.12 newtons E. 0.36 newtons

Why do you need a balanced equation for stoichiometry?