First, we measured out 10 mL of Hydrochloric Acid and poured it into the eudiometer.
Then, we filled up the rest of the eudiometer with water.
Next, we took a small strip of Magnesium and shaped it into a little ball and wrapped the Copper wire around it, which was placed in the stopper.
After, we put in the stopper and placed the eudiometer upside down in the stand, somewhat in a beaker half full of water.
The eudiometer's contents started to bubble, which is the evidence of the chemical reaction, and created the gas. The volume of the eudiometer minus the volume of the liquid left in the eudiometer equals the volume of the gas created by the chemical reaction.
In order to find the mass of the Magnesium strip, you have to use dimensional analysis to convert the length of the strip to grams using the conversion of 10 cm of Mg = 0.1407 grams.
The barometric pressure is 30.04 in Hg (inches Mercury), which you have to convert to millimeters.
Your water vapor pressure depends on whatever temperature you got.
Don't forget to use Dalton's Law of P(total) = P(H20) + P(H2), so that you can find the pressure of the Hydrogen gas to then find the molar volume. The total pressure is the barometric pressure, and the water pressure is your water vapor pressure.
The next scribe is Yada Thia.
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