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Asked Dec 24, 2019
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The density of lead is 1.13 x 104 kg/m3 at 20.0°C. Find its density at 105°C.

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-3 at To = 20.0°C. The Given Info: Density of lead ( po) is 1.13 × 104 kgm co-efficient of linear expansion of lead ( a) is 2.9 × 10-5/°C Formula to calculate the density is, p= 4 (1) • Mis the mass. V is the volume. The formula for volume is, V = Vo [1 + B (T – To)] (II) Bis the co-efficient of volume expansion. The relation between a and Bis, B= 3a

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Substitute 3a for B in Equation (II), V = Vo [1+ 3a (T – T)] (III) Substitute Equation (III) in (I), м (IV) p= Vo(1+3a(T–To)] At temperature To, м (V) Vo po From Equations (IV) and (V), Po [1+3a(T-To)] ||

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