1. Identify the given
• The volume o ethyl lcohol = 573mL
,
• The density of the ethyl alcohol is 0.789 g/mL.
2. Calculate the volume of ethyl alcohol in litres - convert mL to Litres :
(a) We know that :
1 L = 1000mL
x L = 573mL ....( do a cross multiply)
xL = (573mL* 1L )/1000mL
=0.573L
Therefore the volume of ethyl alcohol = 0.573L
(b) The mass of the ethyl alcohol in grams.
we will use this formula to calculate the mass :
Density is the ratio of mass and volume.
Density= mass/ volume
∴ Mass = density x volume
= 0.789 g/mL x 573 mL
=452.097 grams
~ 452.1 grams
• Therefore mass of the ethyl alcohol = 452.1 grams