The outermost layer of the atmosphere is what

What can you conclude about the relative concentrations of ch3nh2 and ch3nh3cl in this buffer? for ch3nh2, pkb = 3.36?

Why does it seem to us as if rocks remain the same and don't change

Which of these would be caused by a chemical change? A) The formation of lava. B) Sedimantary rock layering over time. C) Metamorphic rock forming from igneous. D) Metamorphic rock eroding to form sedimentary rock.

Which of the following is true of physical properties?

Examine the false statement. Weak acids always have a high pH. Select the rewording that makes the statement true. Strong acids always have a high pH. Weak acids always partially dissociate. Strong acids always have a low pH.

What is the chemical formula for coper (ll) hydroxide?

A 1.50-g sample of hydrated copper (II) sulfate was heated carefully until it had changed completely to anhydrous copper (II) sulfate () with a mass of 0.957 g. Determine the value of x.

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?