text: 2 equivalents questions.? show how you came up with the answers please?  #1. how many moles is 3.00 equiv of al3+?  the atomic mass of al is 27.0 g/mol.  a. 3.00 mol    b. 1.00 mol    c. 9.00 mol  i'm almost positive the answer to #1 is 9.00 moles   d. 81.0 mol  ---------------------------------------------------------- #2 how many equivalents is 0.100 mol of ca2+?  the atomic mass of ca is 40.0 g/mol.    a. 0.200 equiv    b. 0.0500 equiv    c. 20.0 equiv    d. 80.0 equiv in each case, the atomic mass is unimportant...the normality of a soln is molarity x valence...n=vm  #1...b. 3.00=3m, so m=1.00mol #2...a. n=0.100x2, so n=0.200 equiv  you can visualize eg that hcl has only one h to ionize, whereas h2so4 has two...so only takes half as much to do the job.   hcl + naoh ---> nacl + h2o...but h2so4 + 2naoh ---> na2so4 + 2h2o