<h3>
Answer:</h3>
0.387 J/g°C
<h3>
Explanation:</h3>
- To calculate the amount of heat absorbed or released by a substance we need to know its mass, change in temperature and its specific heat capacity.
- Then to get quantity of heat absorbed or lost we multiply mass by specific heat capacity and change in temperature.
- That is, Q = mcΔT
in our question we are given;
Mass of copper, m as 95.4 g
Initial temperature = 25 °C
Final temperature = 48 °C
Thus, change in temperature, ΔT = 23°C
Quantity of heat absorbed, Q as 849 J
We are required to calculate the specific heat capacity of copper
Rearranging the formula we get
c = Q ÷ mΔT
Therefore,
Specific heat capacity, c = 849 J ÷ (95.4 g × 23°C)
= 0.3869 J/g°C
= 0.387 J/g°C
Therefore, the specific heat capacity of copper is 0.387 J/g°C
Answer:
18.45L
Explanation:
V1 = 12.3L
T1 = 40K
T2 = 60K
V2 = ?
This question involves the use of Charles law which states that the volume of a fixed mass of gas is directly proportional to its temperature provided that pressure remains constant.
Mathematically,
V = kT k = V/T
V1 / T1 = V2 / T2 = V3 / T3 =.......=Vn / Tn
V1 / T1 = V2 / T2
V2 = (V1 × T2) / T1
V2 = (12.3 × 60) / 40
V2 = 18.45L
The final volume of the gas is 18.45L
Answer:
0.0075÷0.015=0.5 not so sure lol
