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A geyser heats water flowing at a rate o...

A geyser heats water flowing at a rate of 2.0 kg per minute from `30^(@) " to 70^(@)` .If geyster operates on a gas burner , the rate of combusion of fuel will be _______ `g min^(-1)`
` [ " Heat of combustion " = 8 xx 10^(3) " Jg"^(-1), " Specific heat of water " = 4.2 " Jg"^(-1) .^(@)C^(-1)]`

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