The density of pentanol is 0.825 g/mL. How many grams of pentanol should be added to 250 mL of water to make a 5% solution by volume? (3 s. f.)

Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury