Question

$80g$ of water at $30{}^{\circ }C$ is poured on a large block of ice at $0{}^{\circ }C$ . The mass of ice that melts is

• A. $30g$
• B. $80g$
• C. $1600g$
• D. $150g$

Answer 1

Answer: (A)

$m_{ice}L=m_{w}S\Delta Q$
$m_{ice}\left(80\right)=80\left(1\right)\left(30-0\right)$
$m_{ice}=30g$