The mass of the aluminium bar is 1.02 grams.
The calculation will be done on the formula -
Q = mc∆t, where Q is heat, m is mass, c is specific heat capacity and ∆t is temperature. Keep the values in formula to find the mass of aluminium bar.
Taking specific heat capacity of aluminium as 903 J/kg K
m = 185 ÷ (903 × (498 - 298))
Performing subtraction on denominator on Right Hand Side of the equation
m = 185 ÷ (903 × 200)
Performing multiplication on denominator on Right Hand Side of the equation
m = 185 ÷ 180,600
Performing division on Right Hand Side of the equation
m = 0.00102 kg or 1.02 grams
Hence, the mass is 1.02 grams.
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