What is the bronsted-lowry definition of an acid?
a. a compound that donates protons
b. a compound that accepts protons
c. a substance that increases hydroxide ion concentration
d. a substance that increases hydronium ion concentration

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?

Aseismic wave is energy released as the result of rock movement along a fault. t or f ?