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Colt1911 [192]
3 years ago
14

Helpppp I need help On this please

Chemistry
1 answer:
Arlecino [84]3 years ago
7 0

Answer:

Spider

Explanation:

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If the atomic mass of 1 oxygen atom is 15.9994 amu, how much mass does of oxygen have?​
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The number of energy levels will increase.

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Read the given equation.
S_A_V [24]

Answer:

2.30 liters.

Explanation:

  • The balanced equation of the reaction is:

<em>Na₂O₂ + CO₂ → Na₂CO₃ + 1/2O₂,</em>

  • It is clear that 1.0 mole of Na₂O₂ reacts with 1.0 mole of CO₂ to produce 1.0 mole of Na₂CO₃ and 0.5 mole of O₂.
  • The no. of moles of CO₂ in (4.60 L) reacted can be calculated from the relation: <em>PV = nRT</em>.

P is the pressure of the gas (P = 1.0 atm at STP),

V is the volume of the gas (V = 4.60 L),

R is the general gas constant (R = 0.082 L.atm/mol.K),

T is the temperature of the gas (T = 273.0 K at STP).

∴ n = PV/RT = (1.0 atm)(4.6 L) / (0.082 L.atm/mol.K)(273.0 K) = 0.205 mol.

<u><em>Using cross multiplication:</em></u>

1.0 mole of CO₂ produces → 0.5 mole of O₂, from the stichiometry.

0.205 mole of CO₂ produces → ??? mole of O₂.

  • The no. of moles of O₂ produced from 4.60 L of CO₂ = (0.5 mole)(0.205 mole) / (1.0 mole) = 0.103 mole.
  • ∴ The volume of O₂ produced from 4.60 L of CO₂ = nRT/P = (0.103 mol)(0.082 L.atm/mol.K)(273.0 K) / (1.0 atm) = 2.30 liters.
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