Density conversion

  • #1

Main Question or Discussion Point

:confused:

i am completely lost with this. mind you this is my first chemistry class, and my professor is not very good at explaining things.

Ethylene glycol (antifreeze) has a density of 1.11g/cm^3. What is the volume, in liters, of 5.8kg of this liquid?

HELP?
 

Answers and Replies

  • #2
Gokul43201
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What is the definition of density ?
 
  • #3
d = m/v

measure of mass per unit of volume
 
  • #4
Gokul43201
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Now which of these 3 quantities are you given ? Can you substitute them into the equation ?
 
  • #5
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rearranging d = m/v gives v = m/d. Convert 5.8 kg into grams since the density is in grams, by multiplying by 1000 (1 kg = 1 x 10^3 g).

v = 5800g/(1.11g/cm^3) = 5,225.23 cm^3.

You need the answer in liters, and 1x10^-3 L = 1 cm^3. Therefore, (1x10^-3 L/cm^3) * (5,225.23 cm^3) = 5.225 L.
 
Last edited:

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