A salt consists of

a. two or more cations only

b. two or more anions only

c. an anion from an acid and a cation from a base

c. none of the above

Salim takes 100 g of water each in four identical containers P, Q, R and S and mixes the following in them.

Magnesium is heated in the presence of oxygen to produce magnesium oxide. If you started with 2.43g of magnesium, what is the theoretical yield of magnesium oxide?

When you heat an air-filled, sealed can, what happens inside? A. The collisions of air molecules against the wall of the can are weaker and less frequent. B. The collisions of air molecules against the wall of the can are stronger and more frequent.

Which element has chemical properties that are most similar to the chemical properties of sodium? (1) Mg (3) Se (2) K (4) Cl

The chief cause of corrosion in the air is A. oxygen B. Carbon dioxide C. Nitrogen

The three major groups p On the periodic table are the

Which of the following has the greatest mass, in grams? a. 1 atom of lead (Pb) b. 0.5 mol copper (Cu) atoms c. 0.3 mol gold (Au) atoms d. 25 atoms of mercury (Hg)

Which one is not a sedimentery rock a.) sandstone b.) limestone c.) quartz d. (coal

Which group is more reactive than the alkaline earth metals?

Why do you not want any of the water on the outside of the test tube to drip off into the calorimeter?