Explanation: The density of a substance tells you the mass of exactly one unit of volume of said substance. In your case, aluminium is said to have a density of density Al = 2.70 g . cm − 3 This tells you that every 1 mL of aluminium has a mass of 2.70 g . All you have to do now is use the density of aluminium as a conversion factor to go from cubic centimenters of aluminium to grams 10.0 cm 3 ⋅ 2.70 g 1 cm 3 = 27.0 g −−−−− The answer is rounded to three sig figs.
It is important to calculate discounts independently to ensure that each discount is applied to the price of each product. ... It is also important to calculate them to know the real total price of the purchase you are going to make.
