How much water would you need to add to the 10 grams of sodium hydroxide to make 100 grams of the 10% solution?

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.

Where are each of the three particles located within the atom?

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z