What is true when a reaction has reached equilibrium? A. The concentration of the reactants is changing.
B. The concentration of products and reactants is constant.
C. The reaction has stopped.
D. The concentration of the products is changing.

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

Can someone me with 3 and 4 plz. this is for masteries test.

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves