How much does this weigh?

Question

Archeologists discover a silver crown in an ancient tomb. When they place the crown in a tub of water it displaces 238.1 mL of water. The density of silver is 10.5 g/mL. Assuming the crown is really silver, how much does the crown weigh?

omg im so sad

Answer 1

1mL of water = 1cc = 1g mass.

Mass of water displaced = 238.1mL = 238.1g of water = 238.1cc.

Silver Density is 10.5g/cc (not mL. mL is liquid measure).

Its Specific Gravity is 10.5.

Water S.G = 1.0. meaning 1g/cc

238.1cc x 10.5 = 2,500cc x 1g/cc = 2,500g = 2.5kg.

2.5kg x 2.2lb/kg = 5.5 pounds.

(Weight in Newtons = 2.5kg x 9.81m/s² = 24.525 N).

"Heavy lies the Crown"

Another correct answer given a thumbs down...When are you shameful people going to give this kind of behaviour up ???

Answer 2

Assuming it's silver as you mentioned -- for every milliliter of the 238.1mL of water displaced there is 10.5 grams of silver present.

(238.1 mL)(10.5g/mL) = 250. x 10^1 grams   (3 significant figures)

Notice that mL cancel and you are left with grams

Answer 3

238.1 mL x (10.5 g/1 mL) = 2500.05 g which is 5.51166679 pounds