What mass in grams (theoretical yield) of hydrogen is produced by the reaction of 31.3 g of magnesium with 2.12 g of water?
Mg(s) + 2H20 (1) ► Mg(OH)2 (s) + H2 (g)
O 0.474
O 0.0593
2.71
O 0.119
O 0.237

Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.

Ais your answer to this

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).

Abronsted lowry acid by donating a proton