what is the theoretical yield of magnesium oxide when 45.0 g of magnesium and 35.0 g of oxygen react? 2Mg(s)+O2-> 2MgO(s)a) 45.0 g b) 74.6 gc)80.0 gd) 88.2

Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals