A few days ago
I need chemistry help!!! im am working on specifc heat problems?
I need chemistry help!!! im am working on specifc heat problems?
how to you find the change of temp or final temp of water when only the inital temp of the water is given? in other words how do you solve an equation with 2 variables?
the exact problem i am working on is this: a 500g iron bar at 212 degrees celcius is placed in 2.0 liters of water at 24 degrees celcius. what will be the change of temp in the water?
Top 1 Answers
A few days ago
Favorite Answer
mass of water?
2L = 2000cm^3
since density of water = 1g/cm^3,
2000cm^3=2000g
so,
Heat gained in water = heat loss in iron
mcӨ = mc Ө
2000 x 4.2 x (Ө – 24) = 500 x 0.450 x (212 – Ө)
8400 (Ө – 24) = 225 (212 – Ө)
8400Ө – 201600 = 47700 – 225Ө
8715Ө = 249300
Ө= 30.49˚C
Change of temperature in water: 30.49˚C – 24˚C = 6.49˚C
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