Given the balanced ionic equation representing a reaction:
2a1(s) + 3cu2+(aq) ==> 2a13+(aq) + 3cu(s)
which half-reaction represents the reduction that occurs? (i ) al ==> al3+ + 3e-
(2) al3+ + 3e- ==> al
(3) cu ==> cu2+ + 2e-
(4) cu2+ + 2e- ==> cu

What overall charge must all compounds have

Identify a specific example for each type of technology

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?