Question

a gobar gas plant produces methane and supplies to the families if a family requires 15000 KJ of energy per day how many days will the quota of 10 kg will last . (ΔcH of CH4 = -1665 KJ mol-1)

Answer 1

Molar mass of methane is :

12 + 4 = 16 g

Moles of Methane in Quota of 10kg.

Quota of 10kg = 1/4 × 10 = 2.5 Kg

Convert to grams:

2.5 × 1000 = 2500 grams

Moles = mass / molar mass

Moles = 2500/16 = 256.25 Moles

1 mole gives = 1665 kJ

156.25 moles  will give ?

1665 × 156.25 = 260156.25 kJ

1 day = 15000 kJ

? = 260156.25 kJ

260156.25/15000 = 17.34 days

Approximately 17.34days

Answer 2

Answer:

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