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Mathematics 19 Online
OpenStudy (amtran_bus):

Finding volume with mass and density

OpenStudy (amtran_bus):

OpenStudy (amtran_bus):

I know I need to divide Mass/Density. But would I use 44.95 or 274.95 for the mass?

OpenStudy (abb0t):

Subtract the difference between the two.

OpenStudy (amtran_bus):

Ok. That will give the mass of the water, right?

OpenStudy (abb0t):

Yes

OpenStudy (amtran_bus):

Ok. The density of water is 1.00 g/mL, so the answer is just 230 for the first part?

OpenStudy (abb0t):

Did you put that in your calculator? I don't have one with me.

OpenStudy (amtran_bus):

I did. For the second part, would I take the previous answer (M=D*V, so 1*230 is 230), and multiply it by the density of mercury?

OpenStudy (abb0t):

Yes, you're using Mercury now.

OpenStudy (amtran_bus):

OpenStudy (amtran_bus):

I need help on the 2nd part

OpenStudy (amtran_bus):

@Hero

OpenStudy (amtran_bus):

Maybe part 2 is 3149.95?

OpenStudy (jdoe0001):

the beaker can hold up to 274.95g when filled up now it's being filled with mercury, the mercury density IS NOT 1.00 g/mL, is 13.5 g/mL so, what do you think it'd weight?

OpenStudy (amtran_bus):

For part 1 it weighed 274.95. What I done was take the volume the beaker holds (230 mL) and multiplied that by 13.5 and then added the mass of the beaker alone.

OpenStudy (jdoe0001):

keep in mind they're asking on how much would it weight, including it's own weight when empty

OpenStudy (jdoe0001):

ohh yeah,.... it's 230, my bad

OpenStudy (jdoe0001):

so, 3105 is correct, NOT INCLUDING THE BEAKER

OpenStudy (amtran_bus):

Would I need to add 44.95 to that for the final answer?

OpenStudy (jdoe0001):

yes, -> "how much would the beaker and its contents weight" <--

OpenStudy (jdoe0001):

btw, there's a hint there in red letters

OpenStudy (amtran_bus):

I thought my last answer was right, but I posted anyway because I get 5% off per wrong submission.

OpenStudy (amtran_bus):

Thanks

OpenStudy (jdoe0001):

yw

OpenStudy (amtran_bus):

would 3149.95 be ok or would I need to fix it to the right number of sig figs?

OpenStudy (jdoe0001):

they're using floats, so I'd use the float, or decimals, unless instructed to round it up

OpenStudy (amtran_bus):

It was right.

OpenStudy (jdoe0001):

:)

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