A gas (Molar mass ) was burnt in excess in a constant volume calorimeter and during combustion the temperature of calorimeter increased from 298.0 K to 298.45 K. If the heat capacity of calorimeter i

Question

A gas (Molar mass ) was burnt in excess  in a constant volume calorimeter and during combustion the temperature of calorimeter increased from 298.0 K to 298.45 K. If the heat capacity of calorimeter is  and enthalpy of combustion of gas is , then amount of gas burnt is  g.

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Strategy:
 Use the calorie count to find the number of moles burnt, then convert moles to mass using the molar mass.
 ; .

Step 1: Calculate heat released ()
.

Step 2: Find the amount in grams
Moles .
Mass .

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