What value should you calculate when pka2 and pkb2 are added together?

Write a conversion factor for cubic centimeters and milliliters

According to one acid base theory a base is an 1, h2 acceptor 2, h2 donor 3, h + acceptor 4, h + donor

And sexual reproduction how do the offspring compare to the parent

When 54.50 and 50.407 are divided, how many significant figure would you have?

The chemical formula of glucose is C6H12O6 so it is classified as a [n] A. solution B. mixture C. element D. pure substance

What is true about the energy involved in a chemical reaction? A. The amount of energy is constant, but it is converted from one form to another. B. The amount of energy decreases as it is converted from one form to another. C.

Which state of matter is highly compressible, is made of particles moving independently of each other, and is present in large quantities near Earth's surface?

The air in an inflated balloon (the system) absorbs 125 J of heat from its proximity to a fire. The balloon expands and does 85 kJ of work. What is the change in internal energy (in kJ) (ΔU) for the system? Round to the nearest whole number.

Is a cytoplasm made of 80 percent of water

Calculate the acid concentration of a sample of acid rain with a ph of 4.20