A glass flask has a capacity of 60 cm³ at 12 °C. Calculate the capacity of the flask at a temperature of 50 °C if the glass has a linear coefficient of expansion of 9 × 10⁻⁶/°C.

Here's the solution for question 2:

Given:
Initial volume of glass vessel ($V_0$) = $60 \text{ cm}^3$
Initial temperature ($T_0$) = $18 \text{ °C}$
Final temperature ($T_f$) = $60 \text{ °C}$
Linear coefficient of expansion of glass ($\alpha_g$) = $9 \times 10^{-6} \text{ /°C}$
Volumetric expansion coefficient of mercury ($\gamma_m$) = $180 \times 10^{-6} \text{ /°C}$

Step 1: Calculate the change in temperature ($\Delta T$).