Question

Family consumes 14.5 kg of LPG in 28 days. calculate the average energy consumed per day. If the calorific value of LPG is 55 kj/g

Answer 1

Answer:

The average energy consumed per day is 28,482 kJ/day

Explanation:

Mass of LPG consumed = 14.5 kg = 14500 g

Number of days in which 14.5 kg of LPG is consumed = 28 days

Calorific value of LPG = 55 kJ/g

Average energy consumed in 1 day :

$14500 g\times 55 kJ/g\times \frac{1}{28 days}=28,482 kJ/day$

Answer 2

The average energy used per day is 28,482kJ.

Explanation:

Given:

Mass of the LPG consumed = 14.5kg

Number of days = 28 days

Calorific value of LPG = 55kJ/g

To find:

Average energy consumed per day = ?

Formula to be used:

Average energy consumed per day = $MassXcalorific valueX (\frac{1}{28 days} )$

Calculation:

Average energy consumed per day = $MassXcalorific valueX(\frac{1}{28 days} )$

14.5 kg X 55 kJ/g X$(\frac{1}{28 days})$= 28, 482kJ/day