Answer:
B. 9.1 × 10² J
Explanation:
The formula for the amount of heat (q) absorbed is
q = mCΔT
1. Calculate ΔT
ΔT = 22.5 °C - 14 °C = 8 °C
2. Calculate q
q₂ = mCΔT = 25.5 g × 4.184 J·°C⁻¹g⁻¹ × 8 °C = 9 × 10² J
Note: The answer can have only one significant figure, because you measured the starting temperature of the water only to the nearest degree.
Joules is the SI unit of energy and is the movement of an object when Newton's force is applied. The amount of energy required is option B. [tex]9.1 \times 10^{2} \;\rm J.[/tex]
The heat can be lost or gained during a reaction and is given as the product of the mass of the substance, specific heat and temperature change.
The amount of heat absorbed can be given by:
[tex]\rm q = mC\Delta T[/tex]
Given,
Mass (m) of the substance = 25.5 gm
Specific heat (C) = [tex]\rm 4.184 \;J ^{\circ}C^{-1}g^{-1}[/tex]
Substituting values in the above equation:
[tex]\begin{aligned}\rm q &=\rm mC(T_{2}-T_{1})\\\\&= 25.5 \;\rm g \times 4.184 \; J ^{\circ}C^{-1}g^{-1} \times 8 ^{\circ}\;\rm C\\\\&= 9.1 \times 10^{2} \;\rm J\end{aligned}[/tex]
Therefore, option B. [tex]9.1 \times 10^{2} \;\rm J[/tex] is the heat.
Learn more about the heat here:
https://brainly.com/question/13196970
