Question

A flask that can hold 158 g of water at 4oc can hold only 127 g of ethanol at the same temperature. what is the density of ethanol?

Answer 1

0.8037 g/mL is the density of ethanol.

Step-by-step explanation:

Mass of the water = m = 158 g

Volume of the water in the flask= V

Density of the water = d= 1.00 g/mL

`\density=(Mass)/(Volume)`

`1.00 g/mL=(m)/(V)=(158 g)/(V)`

`V = 158.00 mL`

Now, mass of an ethanol hold by flask, M = 127 g

Volume of the flask = V = 158.00 mL

Density of the ethanol =D

`D=(M)/(V)=(127 g)/(158.00 mL)=0.8037 g/mL`

0.8037 g/mL is the density of ethanol.

Answer 2

• The density of ethanol will be 0.80 g/ml.

Step-by-step explanation:

As we know, density of water is 1 g/ml which show that 158 g of water contain 158 ml of water.

d = m/v = 258/258 = 1 g/ml

So there will be same volume for ethanol

density of ethanol = 127/158 = 0.80 g/ml