3boys2girls » 化學物理生物 » PHY功課@value for the specific latent heat of vaporization of the liquid

2009-4-19 15:48 琳小姐
PHY功課@value for the specific latent heat of vaporization of the liquid

A certain liquid in an insulat ed vessel is heated by an immersion heater that supplies heat at a rate of 10Js-1.The liquid was brought for 3 minutes ,during which time the liquid lost 10g.What value for the specific latent heat of vaporization of the liquid can be calculated from this experiment.

2009-4-20 13:07 Iverson~佳
總能量10J x 3x60  除返個質量.0.01kg


ans係180000Jkg-1  或1.8x10^5Jkg-1

2009-4-20 23:56 ZeroYip
using the equation of E=ml
m=10g
E=10Js-1*180s

1800J=(10g/1000g)(1000g/1kg)l
l=180,000J kg-1

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