Question

A glass that holds $0.5\,litres\,(L)$will hold how many milliliters (mL)?

Answer 1

Hint: Volume is defined as the space occupied or filled by an object by virtue of its existence in space.
As it is clearly mentioned in our question we need to do unit conversions, doing so demands from us the knowledge on how to convert liters into milliliters. We know that the prefix $milli$represents${10^{ - 3}}$so clearly,$1L$ must contain${10^3}mL$as otherwise the prefix milli would not have been used.

Formula used:$1L = 1000mL$

Complete step-by-step answer:By using unit conversions we know that,
$1L = 1000mL$
So,$0.5\,L = \,0.5 \times \,1000\,mL\, = 500\,mL$
Hence, the glass can easily hold $500\,mL$which is the required answer.

Additional information:
Some terms to remember are mentioned in the table below:

You can also remember in this way:
King (Kilo)
Harry (Hecto)
Died (Deca)
Mother (meters)
Did not (Deci)
Cry (Centi)
Much (Milli)
A factor of ten has to be multiplied while going from up to down and a factor of ten has to be divided while going from bottom to top.
Volume also can be expressed in terms of units of distance as given by the following relation:
$1L = 1d{m^3}$Where$dm$represents decimeter.

Note:We have to be quite familiar with all types of unit conversions to solve these questions. You just need to revise the units and then practice a lot. Similar type of unit conversions can be asked for units of length, temperature, pressure etc. We just need to learn the relationship between different units in order to attempt these questions. The difference between deciliters and decaliters has to be taken special care of. We need to remember that $1mL = 1c{m^3}$and other such relations.