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\(\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\) represents which gas law?
\(B\)
→ The equation \(\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\) represents Charles’ Law, which states that the volume of a gas is directly proportional to its temperature, provided the pressure and amount of gas remain constant.
\(\Rightarrow B\)
A sample of oxygen gas has a volume of 35 mL. If the temperature of the gas is raised from 40.0°C to 90.0°C, find the new volume of the gas, assuming constant pressure. (2 marks)
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\(40.6\ \text{mL}\)
→ Using Charles’s Law:
→ \(V_1=35\ \text{mL}\), \(T_1=313\ \text{K}\), \(T_2=363\ \text{K}\)
| \(\dfrac{V_1}{T_1}\) | \(=\dfrac{V_2}{T_2}\) | |
| \(V_2\) | \(=\dfrac{V_1 \times T_2}{T_1}\) | |
| \(=\dfrac{35 \times 363}{313}\) | ||
| \(=40.6\ \text{mL}\) |