Gas stochiometry:
prelab assignment (10 points) due at the begining of lab
purpose
compare the actual mass of Mg to the experimentally determined mass of Mg (in the above reaction)
materials
~15 mm Mg ribbon, ~ 20 mL 6 M HCl, water
eudiometer tube (measures the volume of a gas), thermometer, barometer, 2-hole stopper; pneumatic trough
beaker, ruler, thread (to secure Mg to stopper); balance
methods / data analysis
student design
Content of lab report [35 points]
introduction [10 points]: describe the calculations using equation / formula; do not use actual values
experimental methods [5 points]
data analysis [10 points] :
- data table
- calculation to determine the mass of Mg based on measurements related to H_{2 } gas
- calculate % error
- compare experimental & calculated mass of Mg
statistics (include interpretation of p-value; refer to the purpose of the lab)discussion [10 points]
that correlates to an aspect of this laboratory activity; provide an example in the lab or this lab report that meets these practices. include in-text citation & a bibliography / refererence list.describe / list two high school
- NGSS science & engineering practices
and
additional resources
table relating the partial pressure of water as a function of temperature
lab activity source (examples): site 1 & site 2 [access 4 / 2009