Find the speed of sound in a mixture of 1 mole of helium and 2 moles of oxygen at `27^(@)C`. If the temperature is raised by 1K from 300K, find the percentage change in the speed of sound in the gaseous mixture.
Take `R=8.31Jmo l e^(-1)K^(-1)`.

Explanation

To find the speed of sound in a mixture of 1 mole of helium and 2 moles of oxygen at 27°C, and to determine the percentage change in speed when the temperature is raised by 1K, we can follow these steps:

### Step 1: Convert Temperature to Kelvin
The temperature given is 27°C. To convert this to Kelvin:
\[ T = 27 + 273 = 300 \, K \]

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