How do I find mass from density and volume?

Question

im trying to solve this problem: If an organic liquid has a density of 1.11 g/ml and has a measured volume of 500. mL, what mass of liquid is present?

Answer 1

555 g. Mass = Density * Volume

Answer 2

Density To Mass

Answer 3

Make a triangle with M on top D in the left corner and V in the right corner. Then just cover up what ever you are trying to find and theres your equation.
M
D/V
So mass is density * volume
Density is mass/volume
Volume is mass/density
Just make sure everything is in the same units!!!

Answer 4

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RE:
How do I find mass from density and volume?
im trying to solve this problem: If an organic liquid has a density of 1.11 g/ml and has a measured volume of 500. mL, what mass of liquid is present?

Answer 5

In trying to solve any problem I always look at the units. In this case you want to find the mass in grams. You have density in g/ml and volume in ml. You look at how to multiply or divide to end up with the proper units. If you multiply g/ml by ml, the ml cancels out leaving only the mass. So if you multiply the density (1.11 g/ml) by the volume (500 ml) you get 555g. To check this take 555g and divide by 500ml and you should get 1.11 g/ml. This will work for almost any type of units.

Answer 6

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First, don't get intimidated by the terms and the jargon. If your more comfortable calling them thingy's and widgets fine but YOUR RULES OF ALGEBRA STILL APPLY. Your variables are your units and what you do to the units you do to the coefficients. The numbers are not as nice and neat as in math class but you'll get it...you know d = m/v; v = m/d ...you are correct. Be careful with your units and make sure that when you divide, you cancel out the like terms in the numerator. If you are solving for a volume, you should have a volume unit in the numerator or you inverted the operation....I've done it thousands of times... Anyway, 30g / 1.1639 g/cm^3 =25.775 cm^3

Answer 7

D= M/V so just flip the equation around to solve for M:


M=(V)(D)

So just multiply your volume and density and you get 555 grams

Answer 8

This is a problem that a lot of beginning chemistry students stumble over. The reason is that they are not used to paying attention to the units and don't know how to do dimensional analysis (which is just a fancy word for "paying attention to the units").

The problem is the same as "How do you derive a from b and a/b?"

You have to multiply the b by the a/b. The b's cancel out leaving a.

So in your problem you mutiply the 500. ml by the 1.11 g/ml. The ml units cancel out and you are left with the g unit.

So you end up with 555. grams.