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- Homework Statement
- A 0.19 kg water is initially at 23C. How much ice (in grams), initially at -20C must be mixed into it, to achieve a final temperature of 3C with all the ice melted. Neglect the heat capacity of the container. Use cw = 1 cal/gK, ci = 0.48 J/gK, and Lfi = 79.6 cal/g.

- Relevant Equations
- mi = [mw(cw)(ti-tf)]/[Lfi + (Tf - Ti)]

Can someone walk me through this? Our teacher didn't bother to meet us synchronously ever since and I'm kinda stumped on solving this. The equation I used for this problem is:

mi = [mw(cw)(ti-tf)]/[Lfi + (Tf - Ti)]

mi = [190(1)(23-3)]/[79.6+(3+20)] = 37.04g

mi = mass of ice

mw = mass of water

cw = specific heat of water

ci = specific heat of ice

Lfi = latent heat of ice

I'm not sure if that's right or not because I couldn't really understand anything from the module he gave us. Thanks!

mi = [mw(cw)(ti-tf)]/[Lfi + (Tf - Ti)]

mi = [190(1)(23-3)]/[79.6+(3+20)] = 37.04g

mi = mass of ice

mw = mass of water

cw = specific heat of water

ci = specific heat of ice

Lfi = latent heat of ice

I'm not sure if that's right or not because I couldn't really understand anything from the module he gave us. Thanks!