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▶2kg of ice melts when water at 100℃ is poured in a hole drilled in a block of ice. What mass of water is used!?
Given:
Latent heat of ice, L(m) =
mass of ice, m= 2kg
Similarly,
specific heat of water, S=
∆T = T1 - T2= 100 - 0 =373 - 273= 100K
let mass of water be m'...
we have both heat energies remains same!
i.e,
Q =
where 'Q' is heat energy and 'L(m)' as latent heat and 'm' as a mass..
similarly,
Q =
since, energies required are same!
hence!
equating!(1)&(2)
substituting values!
m' =
m' = 1.6kg...
hence , the mass of water poured into an hole in ice block is 1.6kg!!
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