Which element is in the same group as Al (aluminum)? O A. B (boron)
O B. Si (silicon)
O C. Zn (zinc)
O D. Mg (magnesium)

How many grams of n2h4 will be consumed by 23 g of n2o4

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.

Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775