Question

300 g of water at 25⁰C is added to 100g of ice at 0⁰C. The amount of ice melts is –

• A. 6.25 g
• B. 93.75 g
• C. 100 g
• D. None of the above

Answer 1

Answer: (B)

93.75 g

Answer 2

heat release by water = m s d q

= 300 × 1 × 25

= 7500 Cal. amount of Ice melts from this heat

dQ = mL

m = $\frac{dQ}{L}$ = $\frac{7500}{80}$ = 93.75 g.