5 Questions
What is the formula to calculate the length of magnesium needed for the experiment?
length of Mg needed = measured length × 0.0868g measured mass
What are the observations that need to be recorded during the experiment?
Measuring temperature: T1 (ºC) (start of experiment) T2 (ºC) (end of experiment) T (ºC) average temperature Trial 1 Trial 2 CHEM 121 LAB REPORT Data: Trial 1 Trial 2 Trial 3 Mass of Mg (g) Number of moles of H2 (mol) Final eudiometer reading (mL) Initial eudiometer reading (mL) Volume of gas (mL) Barometric pressure (mmHg) Difference in levels (mm solution) Difference in levels (mmHg) Vapor pressure of water (mmHg) Corrected H2 pressure (mmHg) Temperature (°C) R (L atm K-1 mol-1 ) Average R (L atm K-1 mol-1 ) Percent error (%) *Values in bold must be recorded during the experiment.
What is the corrected pressure of H2 in the eudiometer?
Corrected H2 pressure (mmHg)
What is the formula to calculate the volume of gas produced in the experiment?
Volume of gas (mL) = Final eudiometer reading (mL) - Initial eudiometer reading (mL)
What is the formula for the average value of the gas constant (R) in the experiment?
Average R (L atm K-1 mol-1 )
Test your knowledge of procedural changes with this quiz on measuring and calculating the length and mass of magnesium strips before and after cutting. Practice your understanding of experimental procedures and calculations.
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