The mass of a metal bar has a mass of 13.2 g. ?

The mass of a metal bar has a mass of 13.2 g.  Using the water-displacement method a student finds the initial volume level on a graduated cylinder is 11.0 ml. The final volume was 13.4 ml. What is the metal’s density?

MyRank 10/26/2018.

Density = mass / volume

d = m/v

13.4ml - 11.0ml = 2.4ml

13.2 / 2.4 = 5.5ml

Roger the Mole 10/07/2018.

(13.2 g) / (13.4 ml - 11.0 ml) = 5.50 g/ml

Brett 10/07/2018.

Look dude, I'm not gonna do your chemistry homework for you, but I'll tell you the process and you can do the math yourself, that way you learn the process and don't get screwed on the test :)

1. Subtract the initial volume of the cylinder from the final volume of the cylinder to get the volume of the metal bar

2. Divide the metal bar's mass by the metal bar's volume

That's it. Your answer should look something like "The metal bar's density is x grams per cubic centimeter"

Edit: never mind everyone else just gave you the answer.

Captain Matticus, LandPiratesInc 10/07/2018.

The bar displaces 2.4 ml. 1 ml is equal to 1 cubic centimeter

13.2 grams / 2.4 cm^3 =>

(132/24) grams/cm^3 =>

(12 * 11 / (12 * 2)) grams/cm^3 =>

5.5 grams/cm^3

david 10/07/2018.

D = m/V = 13.2g / [13.4 - 11.0]mL <<< use a calculator