How to solve stoichiometry word problems

1) Mole-Mole Problems

Problem:  How many moles of HCl are needed to react with 0.87 moles of Al?

        Step 1: Balance The Equation & Calculate the Ratios            2Al:6HCl (1:3)        2Al:2AlCl3 (1:1)        2Al:3H2 (1:1.5)        Step 2:  Find the Moles of the Given            0.87 moles of aluminum are reacted with hydrochloric acid          Step 3: Calculate the moles using the ratios            moles HCl = 0.87molAl x  3molHCl/1molAl = 2.6 mol HC

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

Answerhund's rule;