In Lab Questions Answver the following questions on your notebook before learing

Question

In Lab Questions Answver the following questions on your notebook before learing lab. You are encouraged to discuss ansvers with your elassmates 1. Why must you record the volume only when the height of the column of water inside the graduated 2. Literature value of molar mass of butane will be needed to calculate % error. What is this literature cylinder is the same as the liquid level in the trough? value? Students are asked to leave water in the trough so that the water will be ready for later labs. Why cannot we use DI water from water faucet directly? Hint: it is related to temperature! What does it really mean when a pressure gauge reads "O"? When processing the data in Part II, if you plan to plot Volume () on -axis, which one do you plan to plot on x-axis, Pressure (P) or 1/Pressure (1/P)? Why? 3. 4. 5.

Explanation / Answer

Ans 1 : The volume is recorded when the height of column of water inside the graduated cylinder is the same as the liquid level in the trough because at this time the pressure inside the cylinder is same as that of the atmospheric pressure.

If the height of water is less or more than the liquid level in trough , it indicates that the two pressures , inside and outside does not equalise.

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