A cars fuel tank holds 40 kg of petrol. 1 kg of petrol releases 5

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A car’s fuel tank holds 40 kg of petrol.

■ 1 kg of petrol releases 5 × 10⁷ J of energy when it burns.

■ Only 40% of the energy released when the petrol burns is converted into useful work.

■ 1 × 10⁶ J of work is needed to drive the car 1 km.

a. How many joules of energy are released when 40 kg of petrol burns?

b. How many of these joules of energy are available to move the car forward?

c. How far can the car travel on 40 kg of petrol?

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Cambridge International AS And A Level Chemistry Coursebook

ISBN: 9781316637739

2nd Edition

Authors: Lawrie Ryan, Roger Norris

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Question Posted: Sep 22, 2021 02:47 AM

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A cars fuel tank holds 40 kg of petrol. 1 kg of petrol releases 5

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a 40 kg of petrol will release 40 5 107 2 109 ...View the full answer

Cambridge International AS And A Level Chemistry Coursebook

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