1. Calculate the mass of the product, if you started with 4 g of Zn and 3 g of H2CO3. Zn + H, CO,
ZnCO, + H2

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Lewis structure and molecular geometry for nh2cl

Will mark brainliest how many electrons can be held in the energy level n = 4?