The value of coefficient of volume expansion of glycerine is 5 into 10 raise to the power minus 4 the
Answers
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Given in the question :
=> Coefficient of volume expansion of glycerin, αV = 49 × 10^-4 K–1.
=> Rise in temperature, ΔT = 30°C.
As we know that Fractional change in its volume = ΔV/V .
Comparing this with Temprature we get ,,
Notations : m = Mass of glycerine
ρT1 = Initial density at T1
ρT2 = Initial density at T2
in place of ∆V I have written it = V1 and V2
=>> ΔV/V = αV ΔT
VT2 – VT1 = VT1 αV ΔT
(m /ρT2)- (m /ρT1) = (m /ρT1)αV ΔT
=> Fractional Change in Density = (ρT1 – ρT2 ) / ρT2
=> Putting values we Get ,, = 49 × 10^-4 × 30
49 × 10^-4 × 30 = 147 × 10^-3 .
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the question is not complete. below is the question
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The coefficient of volume expansion of glycerin is 49×10−5K−1. What is the fractional change in its density for a 30oC rise in temperature?
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Answer: 1.5×10^-2
Explanation:
refer the attachment. hope this helps :)
