The mass of the copper coin placed in 101g of water is 135.3g.
COLORIMETER:
The mass of the copper coin can be calculated using the following expression:
Since; Q = mc∆T
Where;
- Q = heat absorbed or released
- m = mass of substance
- c = specific heat capacity of substance
- ∆T = change in temperature
- mc∆T (water) = mc∆T (copper)
According to the question;
COPPER METAL:
- m = ?
- c = 0.385 J/g°C
- ∆T = 68°C
WATER:
m = 101g
c = 4.18 J/g°C
∆T = 8.39°C
⇒ 101 × 4.18 × 8.39 = (0.385 × m × 68)
⇒ 3542.09 = 26.18m
⇒ m = 3542.09 ÷ 26.18
⇒ m = 135.3g
Therefore, the mass of the copper coin placed in 101g of water is 135.3g.
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