Nguyên tử Carbon nặng hay nhẹ hơn nguyên tử Magnesium bao nhiêu lần ?( Cho Mg = 24 đvC, C = 12 đvC)

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.

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

How many moles are equal to 2.4×10^23 formula units of sodium chloride