The lewis structure for carbon hydrogen cyanide (hcn) is given. what is the three-dimensional shape of the molecule?

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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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.