## Answers

**8) The gas pressure is calculated:**

**P = Po + D * g * h**

**Where:**

**Po: Initial pressure in Pascal**

**D: Mercury density**

**g: Acceleration of gravity**

**h: Height of the column**

**P = 89326 Pa + 13550 Kg / m3 * 9.81 m / s2 * 0.01 m = 90655 Pa**

**The pressure in mmHg is calculated:**

**P = 90655 Pa * (760 mmHg / 101352 Pa) = 680 mmHg**

**The restultado of:**

**P = Patm + h mercury = 670 + 10 = 680 mmHg**

**9) If the mercury level decreases, the volume of gas inside the burette will also decrease.**

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