To what temperature will 2 kg of water be cooled with the release of 500,000 J of energy. If the starting temperature was 60 degrees?

Given: Q = 500000J, m = 2kg, t1 = 60 °, c = 4200 J / kg • ° С
Find: t2
Solution: find the desired temperature by the formula Q = cm (t2-t1)
t2-t1 = Q: (c • m), t2-t1 = 500000: (4200 • 2), t2-t1! take modulo! (which means we can swap places), t1-t2 = 59.5 ° C, which means t2 = t1-59.5 = 60-59.5 = 0.5 ° C, or if we round up to 59.5 ° C, then the water will cool to 0 ° C
Answer: 0.5 ° C or 0 ° C