Question

(am) 4. The density of iron is 7.50 g/cm2. What is the mass, in pounds, of a cube of iron that measures 5.00 cm, on a slide? 7.589 23 ts4g Cmz 5. Lead has a density of 10.5 g/cm3. What is the diameter of a lead ball that has a mass of 500.0 g? Report your answer in cm. 10.53 Cm 3)2 3.12: 30

Hello,

I would very much appreciate if someone could work out #5 on this chemistry problem sheet. Thank you indeed.

Answer 1

5)

Step 1: find volume of the ball

use:

density = mass / volume

10.5 g/cm^3 = 500.0 g / volume

volume = 47.6 cm^3

Step 2: find radius of the ball

volume = (4/3)*pi*r^3

47.6 cm^3 = (4/3)*3.14*r^3

r^3 = 11.37

r = 2.25 cm

Step 3: find diameter

use:

diameter = 2*r

= 2*2.25 cm

= 4.50 cm

Answer: 4.50 cm