Question

To find an object's density (D), first measure its mass (m) and volume (V). Then use the following equation:
D = m/V

Densities of Common Substances

Substance Density (g/cm3) Substance Density (g/cm3)
Helium (gas) 0.0001663 Copper (solid) 8.96
Iron pyrite (solid) 5.02 Silver (solid) 10.50
Water (liquid) 1.00 Lead (solid) 11.35

Examine the above equation and table. Robin has a lead ball with a mass of 454 g. What is its volume?
476.7 g3
40 g3
40 cm3
11.35 g/cm3

Answer 1

It has to be B or C so

Answer 2

\[\Large D= \frac{ m }{ V }\]

you have the mass, 454. The density of lead is whatever it is in the table. Plug in numbers and rearrange to find V.

What is volume measured in? cubic grams, or cubic centimetres?

Answer 3

cubic grams

Answer 4

?

Answer 5

I would say 40 g3 because I did 11.35 / 454 and the answer was 40.

Answer 6

Sir?

Answer 7

Grams is a measurement for weight, and cubic grams isn't anything. Volume is measured in cubic metres, or centimetres etc.

\[\Large 11.35= \frac{ 454 }{ V }\] so \[\Large V = \frac{ 454 }{ 11.35 }\]

Answer 8

The answer will be 40cm3

Answer 9

ohh nevermind 11.35 g/cm3 is the answer

Answer 10

11.35 g/cm3

that is the density of lead...

Answer 11

Volume is measured in cm^3.

Answer 12

So 11.35 / 454 = 40 cm^3

Answer 13

11.35/454 = 0.025 and is not correct.

You want :
\[\Large V = \frac{ 454 }{ 11.35 } \]

Answer 14

I meant 454 / 11.35= 40cm^3

Answer 15

That's what I am saying.

Answer 16

If you'd written it once i might've understood... but twice you said that 11.35 / 454 = 40 so i couldn't tell if you actually knew what you were calculating.

Answer 17

Oh I am sorry. I will correct that in the future thank you