1. In the experiment, what chemical provides the H + (aq) ions? Mg 2+ Mg (s) HCl

Question

1. In the experiment, what chemical provides the H+(aq) ions?
Mg2+
Mg (s)
HCl (aq)
H2 (g)

2. In the experiment you are measuring the volume of what gas?
Incorrect: CO2(g)
Incorrect: N2(g)
Incorrect: O2(g)
Correct: H2(g)

3. In this experiment you use the ideal gas law to determine the atomic mass of magnesium. Assign the variable within the gas law to the values you are collecting:
P V n R T  Mass of magnesium
P V n R T  Volume of H2 gas
P V n R T  Atmospheric pressure, Patm
P V n R T  Temperature of water

Explanation / Answer

1) H+ ions are provide by HCl because the following reaction occurs: HCl <----> H+ + Cl-

3)

n , Mass of magnesium but you have to pass it into molar
V : Volume of H2 gas
P : Atmospheric pressure, Patm
T : Temperature of water

R: Universal deal gas constant.

4) the image is broken

2)

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