Chemistry: Which best describes the role of carbon in the body?

Which best describes the role of carbon in the

Ответ:

krrrr

07.05.2021

Chemistry

$\large \boxed{\text{-2.48 kJ}}$

Explanation:

1. Calculate the moles of CO₂ formed

2CO + O₂ ⟶ 2CO₂

n/mol: 2.00 2.00

The molar ratio is 2 mol CO₂:2 mol CO.

$\text{Moles of CO}_{2} = \text{2 mol CO} \times \dfrac{\text{2 mol CO}_{2}}{\text{2 mol CO}}= \text{2.00 mol CO}_{2}$

2. Calculate the change in the number of moles

We started with 3.00 mol of gas and ended with 2.00 mol.

Δn = n₂ - n₁ = 2.00 mol - 3.00 mol = -1.00 mol

3. Calculate the work done

(a) Convert the temperature to kelvins

T = (25.8 + 273.15) K = 298.95 K

(b) Calculate the work

$w = -p\Delta V = -\Delta nRT = -1.00 \text{ mol} \times 8.314 \text{ J}\cdot\text{K}^{-1} \text{mol}^{-1} \times 298.95 \text{ K}\\= \text{-2480 J} = \textbf{-2.48 kJ}\\\text{The work done is $\large \boxed{\textbf{-2.48 kJ}}$}$

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Which best describes the role of carbon in the body?

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