From the data provided. Fill in the missing slots. B. Determination of R. 0, 015

Question

From the data provided. Fill in the missing slots.
B. Determination of R. 0, 0150 1. Mass of zinc 2. Moles of zinc 3. Moles of hydrogen 4. Volume of water collected (mL) 5. Volume of water collected (Liters) 6. Temperature ofwater collected(0) 7. Temperature of water collected (K) 8. Atmospheric pressure (mm) 9. Vapor pressure of water (mm, from table, p. 214) 10. Corrected pressure of hydrogen (mm) 11. Corrected pressure of hydrogen (atm) 12. Experimentally calculated value of R 13. Literature value of R 14. Percent error .2 0. 46 0 243 K 175 15. Suggest reasons for the percent error (#14) 16. Suggest any ways you can think of to improve any part(s) of this experiment 17. Some of the Learning Objectives of this experiment are listed on the first page of this experiment. Did you achieve the Learning Objectives? Explain your answer. ©2015Cawe Leam ng AllRighs Reserved May not be scanted, "p dordapli led, tr po lidtoaphlely custom page

Explanation / Answer

Q15

% error increases as:

- incorrect manipulation of devise/measuring equipment

specificly:

- Incorrectly measuring the mass of Zinc, i.e. not taring, or weighing a "hot" metal

- volume of water used can change depending on temperature of lab/equipment

- Temperature devise might be not claibrated, therefore, T can change therefore, dT data

- Patmospheric --> might not be well read from the device

- Not actually accounting for the vapor pressure of water for the pressure of the gas

- Not correcting the pressure

Q15

in order to improve this:

- Learn how to accurate calibrate all measuring eqipment

- Learn how to read precise data

- Correct the pressure of gas via

Pgas = Patm - Pvapor

do NOT weigh zinc material at other Temperature than room T

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