In a controlled experiment scientist is studying how long it takes parachutes of different sizes to fall to the ground what is the manipulated variable

Which of the following best describes the formation of plasma?

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block