Which metal will spontaneously react with Zn2+(aq), but will not
spontaneously react with Mg2+(aq)? *
O Mn(s)
O cu(s)
Ni(s)
O Ba(s)

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

1. list three scientific reasons cockroaches may fly.

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.