Physics
25.10.2021 19:58
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An aluminum sphere is 8.20 cm in diameter. What will be its % change in volume if
An aluminum sphere is 8.20 cm in diameter. What will be its % change in volume if it is heated from 30βC to 150 βC ?
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Jana1517
4,4(65 marks)
Change in volume / volume = 3 K change in temperature
K = 24E-6 / deg C Β Β coefficient of linear expansion
R = 4.1 cm
dR / R = 24E-6 * 120 dec C = 2.88E-3
V = 4/3 pi R^3
dV = 4 pi R^2 dR
dV / V = 3 dR / R = 2.88E-3 * 3 = 8.6E-3 = .86%
tanoah7623
5,0(72 marks)
The answer is definately C. as any reaction where oxygen is last in the equation it becomes oxide and not oxygen. like hydrogen dioxide sulfur oxide etc
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