In a similar experiment, a current of 2.15 amps ran for 8 minutes and 24 seconds. the temperature of the water was 26.0°c. the volume of o2 collected was 65.4 ml. the pressure, after all corrections have been made, was 774.2 to. calculate avogadro's number using these data.

Explanation:

Data:

I = 2.15 A

t = 8 min 24 s

T = 26.0 °C

V = 65.4 mL

p = 774.2 To

1. Write the equation for the half-reaction

2H₂O ⟶ O₂ + 4H⁺ + 4e⁻

2. Calculate the moles of oxygen

V = 0.0654 L

T = (26.0 + 273.15) K = 299.15 K

3. Calculate the moles of electrons

4. Calculate the number of coulombs

t = 8 min 24 s =504 s

Q = It = 504 s × 2.10 C·s⁻¹= 1058 C

5. Calculate the number of electrons

6. Calculate Avogadro's number

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