Select the correct answer.

Which compounds are acting like Brønsted-Lowry acids in the following acid-base equilibrium?

HCO3 - + H2O H2CO3 and OH-

A.

H2O and OH-

B.

HCO3 - and OH-

C.

H2O and H2CO3

D.

HCO3 - and H2CO3

What is the percentage composition of CF4

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2mg (s) + o2 (g) → 2mgo (s) how many moles of o2 are consumed when 0.550 mol of magnesium burns?

What do the symbols in parenthesis indicate? CaCl2 (aq) + 2AgNO3 (aq)) d Ca (NOÀ) 2 (aq) + 2AgCl (s) 1. the catalyst used in the reaction 2. the number of atoms of each reactant and product 3. the physical state of each reactant and product 4.

When the limiting reactant in a chemical reaction is completely used, what happens to the reaction? The reaction stops. The reaction speeds up. The excess reactants begin combining. The reaction slows down.

How are energy, work and power related? If a handsaw does the same amount of work on a log as a chainsaw does, which has a greater power? Why?

The osmotic pressure is found to depend on the concentration of the solution. What way, directly or inversely

The following reaction was monitored as a function of time: AB-->A+B A plot of 1/AB versus time yields a straight line with slope 5.5 * 10^-2 (M? s) ^-1. What is the half-life when the initial concentration is 0.

The science student wants to find the mass of a wooden block. What is its appropriate name and use of the equipment

What should be done if a chemical is poured from an original container into another container not intended for immediate use?

Substances and mixtures are two types of___.