How much water can be heated to 100 * C giving it an energy of 9.2 MJ? Specific heat capacity of water 4200 J / kg * C

univerkov | November 19, 2020 | education

ano:
Δt = 100c
g2 = 4.6 * 10 ^ 7J \ kg
m2 = 200g = 0.2kg
s1 = 4200J \ kg * s
To find :
m = 1?
decision:
Q1 = Q2
c1 * m1 * Δt = q2 * m2
m1 = q2 * 2m \ c1 * Δt
m1 = 4.6 * 10 ^ 7J \ kg * 0.2kg \ 4200J \ kg * s * 100s
m1 (approx) 22kg
answer 22kg

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