What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 15 g of water?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

What three things determine the shape and size of a puddle when water is poured out onto a surface

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood