Question #109889
What mass of ice at -14 Celsius will be needed to cool 200cm cube of an orange drink from 25 Celsius to 10 Celsius.( Specific fusion of ice= 3.36×10^5.specific heat capacity of ice= 2100. Specific heat capacity of water= 4200Jkg^-1
1
Expert's answer
2020-04-16T08:57:58-0400
mi(L+ci(T0Ti)+cw(TT0))=mwcw(TwT)m_i(L+c_i(T_0-T_i)+c_w(T-T_0))=m_wc_w(T_w-T)

mi=ρVwcw(TwT)L+ci(T0Ti)+cw(TT0)m_i=\rho V_w\frac{c_w(T_w-T)}{L+c_i(T_0-T_i)+c_w(T-T_0)}

mi=(1000)(200106)(4200)(2510)3.36105+2100(0(14))+4200(100)m_i=\frac{(1000)(200\cdot10^{-6})(4200)(25-10)}{3.36\cdot10^{5}+2100(0-(-14))+4200(10-0)}

mi=0.031 kg=31 gm_i=0.031\ kg=31\ g


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