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

Which describes an altocumulus cloud?

If energy was included in a chemical reaction, on which side of the equation would it be written for an endothermic reaction?

If you drop a ball from several different heights and note how high it bounces from each height what is the bounce height? A) dependent variable B) constant variable C) control variable D) independent variable

What quantity measures the amount of space an object occupies?

How many neutrons are in Uranium-242?

Chandra wants to know how many moles are contained in 150.0 g CCl4 (carbon tetrachloride). What quantity of CCl4 should she use to make this conversion? a. number of moles b. molecular mass c. molar mass d. mole ratio

The equation for the production of methane is c + 2h2 (g) → ch4 (g). how many liters of hydrogen are needed to produce 20. l of methane?

How was the charge distributed in the plum pudding model of the atom

What happens when an acid neutralizes a base

How many mL of 50% (v/v) alcohol should be mixed with 10% alcohol to obtain 50mL of 35% (v/v) alcohol? Round to the hundredths place.