What
are the uses of mass and volume measurements?
What
else can be determined from mass and volume?
One way mass and volume are used in describing matter
is concentration.
If we add something to a liquid, and we know its
mass and the volume
of the liquid, then we can calculate the concentration
(c) by dividing the mass (m)
by the volume (v) of the liquid containing the mass.
The equation for this calculation is:
concentration
= mass / volume
Or, in shorthand: c
= m / v
/ =
If there is something in a liquid and we know its
mass (m) and its concentration (c), we can calculate the volume
(v) of the liquid by using algebra to rearrange the equation, as
follows:
volume =
mass / concentration
In shorthand: v
= m / c
Do you know how this
equation was rearranged? Maybe not if you have not had
algebra yet. The answer is simple, but it takes two steps. First,
multiply both sides by "v" to produce v x c = m. Then
divide both sides by "c."
