2. What is the theoretical yield of the reaction of aluminum oxide when 15.0 g of aluminum reacts with excess oxygen? 4AL) + 302(g) → 2A1203()
O 7.50 g Al2O3
O 15.0 g Al2O3
O 56.7 g Al2O3
28.3 g Al2O3

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Nonpoint source pollution is difficult to control because it