What did democritus think that matter was made of?

The minerals found in bones are deposited by living cells called

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

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.