Some of my work:
500g of ice at -12C is heated to water at 5C. How much energy is required?
Heat = (0.5x2100x12)+(0.5x330000)+(0.5x4200x5)
Heat = 12600 + 165000 + 10500
Heat = 188100J
I am stuck on my Physics work. I have already completed the first 10 questions but I do not understand these, can someone please help me with a method of how to find out.
1. When 0.25kg or water at 70C is mixed with water at 20C the final temperature of the mixture is 30C. find the mass of...