Which statement is true about molecules and compounds?
question 7 options:

a both are made of only one kind of atom.

b both are made of two or more atoms.

c both are made of two or more elements.

d both are made of only one element.

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .