A gas is filled into a bulb connected to an open limb manometer. The level of mercury in the open arm is 2.1 cm lower than that in the other arm of the manometer. The atmospheric pressure is 740 mm. What is the pressure of the gas?

Explanation

To find the pressure of the gas in the bulb connected to an open limb manometer, we can follow these steps:

### Step 1: Understand the Manometer Setup
In an open limb manometer, one arm is open to the atmosphere, and the other arm is connected to the gas. The difference in mercury levels indicates the pressure of the gas relative to atmospheric pressure.

### Step 2: Identify the Given Data
- The height difference in the mercury levels (h) is 2.1 cm.
- The atmospheric pressure (Patm) is 740 mm of mercury.
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