Question

Calculate the mass (in g) of 346 cm³ of polythene. The density of polythene is 0.95 g/cm³. Give your answer to 2 decimal places.

Answer 1

Answer:

328.70 g

Explanation:

Given volume of polythene = 346 cu cm

Mass of 1 cu cm of polythene = 0.95 g or 95/100 g

So, mass of 346 cu cm of polythene = (95*346)/100 = 32670/100 = 328.70 g

Answer 2

The mass of Polythene is 328.7 grams.

Explanation:

Given that,

Volume of Polythene, $V=346\ cm^3$

The density of Polythene, $\rho=0.95\ g/cm^3$

Let m is the mass of Polythene. It is given by the mass per unit volume. Its formula is given by :

$\rho=\dfrac{m}{V}$

$m=\rho\times V$

$m=0.95\ g/cm^3\times 346\ cm^3$

m = 328.7 g

So, the mass of Polythene is 328.7 g. Hence, this is the required solution.

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