What is classification of living things?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

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.

When the mercury level in a barometer decreases that atmospheric pressure has