If 3 liters of hydrogen (at STP) are produced in the above reaction what mass of sodium was used?

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.

How many molecules are found in 1.32 mol of nacl?

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false