Answer to Question #253297 in General Chemistry for Tahir

Question

1. Considering the total number of electrons in NO₂, why might it be expected that the reaction of a free radical with NO₂ is a chain-terminating reaction?
2. The average atmospheric pressure at sea level is 1.012 * 10⁶ dynes/m². The value of g (acceleration of gravity) at sea level is 980 cm / sec². What is the mass in kg of the column of air having a cross-sectional area of 1.00 cm² at the earth's surface and extending to the limits of the atmosphere? (Recall that the dyne is a unit of force, and force = mass * acceleration of gravity.
3. Suppose that 22.4 liters of air at STP is used to burn 1.50g of carbon to form CO₂ and that gaseous product is adjusted to STP. What is the volume and average molar mass of the resulting mixture?

Answer 1

The equation is CO2 + C → 2CO (G)

one mole of CO2 produces 2 moles of CO.

one mole of any gas at STP occupies 22.4L

so two moles of CO will occupy 22.4 × 2 = 44.8L.

so P = 44.8L.

so 2P/10 = 2×44.8/10 = 8.96.