What is the mass of 25 mL of a liquid if its density is 1.25 g/mL?

1 Answer
Aug 18, 2016

Answer:

#31 g#

Explanation:

To calculate the mass of the liquid, we have to use this formula:
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- Usually, density will have units of #g/(mL)# when dealing with a liquid or units of #g/(cm^3)# when dealing with a solid.

  • The mass has units of grams, #g#.

  • The volume will have units of #mL# or #cm^3#

We are given the density and volume, both of which have good units so all we have to do is rearrange the equation to solve for the mass:

#densityxxvolume=(mass)/(cancel"volume")xxcancel"volume"#

#color(purple)("Density")##xx##color(purple)("Volume = Mass")#

#(1.25 g)/cancel"mL"xx25cancel"mL"#

Thus, the liquid has a mass of 31g.