Question

RECORD ALL DATA IN INK using the correc t number of significant figures and correct units. 1. Mass of magnesium sample 2. Volume of hydrogen 3. Temperature of hydrogen 4. Temperature of water 5. Barometric pressure 6. Difference in water levels 7. Aqueous vapor pressure CALCULATIONS: SHOW COMPLETE "SET-UPS" (and the rounding off) FOR ALL CALCULATIONS on the back of this aml 30.46mmg 14: 6cm page or on a separate sheet. Report results to the correct number of significant figures and correct units. 1. Absolute temperature of the gas 2. Mercury equivalent of the difference of water levels 3. Partial pressure of dry hydrogen 4. Volume of dry hydrogen at STP 5. Moles of hydrogen 6. Molar volume at STP 7. Average molar volume at STP Average deviation 8. % Dev. Of average STP molar V fronn ideal STP molar V ABLE: VAPOR PRESSURE OF WATER Temperature, C p, mm Hg 15.0 20.0 25.0 30.0 35.0 12.79 17.54 23.76 31.82-2.35ニ23 9フmmHg 42.18 APHICAL INTERPOLATION those listed in a tabulation of two variables that depend on one another in a be found to a reasonable accuracy using numerical interpolation or by graphing rpolating) intermediate values from the graph. In this experiment, you will use obtain the vapor pressure of water at the temperature of your experiment. erpolation method assumes that the variables, temperature and vapor pressure in ted between adjacent entries in the table. To do a numerical interpolation based te of change of one variable with respect to the other (here the rate of change of e) is calculated from the two adjacent entries in the table that "bracket" the " value (or slope for the straight-line dependence assumed to exist between the used to calculate the amount above the lower bracketing table value the desired hen added to the lower of the two bracketing values to obtain the desired value. g a smooth curve to the data points, then "reading" (interpolating) the desired w, these two methods are applied to the case where the vapor pressure of water Method e values in the table above that bracket the desired temperature and take the these two variables. In this example, the values bracketing 18.6 °C are 15.0 °c 4.75 mm Hg 10 mm Hg)

Answer 1

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