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3 years ago

If there is initially 1.334 m o2, how long will it take for the o2 concentration to reach 0.443 m?

1 answer:

3 0

To answer, we take it that the rate of the consumption of O2 in this item is directly proportional to its concentration in first degree such that,
-dCa/dt = kCa
Solving,
-dCa/Ca = kt
lnCa - lnCao = -kt
Substituting,
ln(0.443) - ln(1.334) = -k(t)
t = 1.1023/k

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Formula mass in daltons of the chemical component.

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Which is a property that Mendeleev predicted for gallium (Ga)?

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The correct option is B.
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In a study of the following reaction at 1200 K it was observed that when the equilibrium partial pressure of water vapor is 15.0

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The value of $K_p$ for this reaction at 1200 K is 4.066.

Explanation:

Partial pressure of water vapor at equilibrium = $p^o_{H_2O}=15.0 Torr$

Partial pressure of hydrogen gas at equilibrium = $p^o_{H_2}=?$

Total pressure of the system at equilibrium P = 36.3 Torr

Applying Dalton's law of partial pressure to determine the partial pressure of hydrogen gas at equilibrium:

$P=p^o_{H_2O}+p^o_{H_2}$

$p^o_{H_2}=P-p^o_{H_2O}=36.3 Torr- 15.0 Torr = 21.3 Torr$

$3 Fe(s) 4 H_2O(g)\rightleftharpoons Fe_3O_4(s) 4 H_2(g)$

The expression of $K_p$ is given by:

$K_p=\frac{(p^o_{H_2})^4}{(p^o_{H_2O})^4}$

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The value of $K_p$ for this reaction at 1200 K is 4.066.

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3 years ago

If a sample of N2 gas has an initial pressure of 500 Torr and volume of 0.5 L, what will the final volume be if the pressure is

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Answer:

V₂ = 0.4 L

Explanation:

Data:

P₁ (initial pressure) = 500 torr
V₁ (initial volume) = 0.5 L
P₂ (final pressure) = 700 torr

Wanted:

V₂ (final volume)

Equation:

P₁V₁ = P₂V₂ → V₂ = P₁V₁ / P₂

Solution:

V₂ = $\frac{(500 torr)(0.5 L)}{700 torr}$ = 0.3571 L or 0.4 L

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2 years ago

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Viefleur [7K]

Answer:

Ligands

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Ligands are small molecules that transmit signals in between or within cells. Ligands exert their effects by binding to cellular proteins called receptors.

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