The density of gas is `1.27 gL^(-1)` at `50^@C` and `0.987 xx 10^5` Pa. Calculate ist molar mass.

Explanation

To calculate the molar mass of the gas given its density, temperature, and pressure, we can use the ideal gas equation and the relationship between density and molar mass. Here’s a step-by-step solution:

### Step 1: Write down the given values
- Density (d) = 1.27 g/L
- Temperature (T) = 50°C
- Pressure (P) = 0.987 × 10^5 Pa

### Step 2: Convert temperature to Kelvin
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