Which has more water for equal volumes of snow: snow with a density of а 0.5 g/mL or snow with a density of 0.25 g/mL?

The balanced chemical equation for this lab is: 3cucl2(aq) + 2al(s) 3cu(s) + 2alcl3(aq) if 10.5 g copper chloride react with 12.4 g aluminum, what is the limiting reactant?

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Newtons second law deals most cosely with