Answer:
–2.23 L
Explanation:
We'll begin by calculating the final volume. This can be obtained as follow:
Initial pressure (P₁) = 1.03 atm
Initial volume (V₁) = 3.62 L
Final pressure (P₂) = 2.68 atm
Final volume (V₂) =?
P₁V₁ = P₂V₂
1.03 × 3.62 = 2.68 × V₂
3.7286 = 2.68 × V₂
Divide both side by 2.68
V₂ = 3.7286 / 2.68
V₂ = 1.39 L
Finally, we shall determine the change in volume. This can be obtained as follow:
Initial volume (V₁) = 3.62 L
Final volume (V₂) = 1.39 L
Change in volume (ΔV) =?
ΔV = V₂ – V₁
ΔV = 1.39 – 3.62
ΔV = –2.23 L
Thus, the change in the volume of her lung is –2.23 L.
NOTE: The negative sign indicate that the volume of her lung reduced as she goes below the surface!
Among the choices provided, the statement that correctly describes the rusting process below is that "Oxygen was reduced over the course of this reaction" as <span> iron can't be the oxidizing agent, because it is the one being oxidized.
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Answer:
d. 0.11
Explanation:
According to the Dalton's law of partial pressure, the total pressure of the gaseous mixture is equal to the sum of the pressure of the individual gases. Also, the partial pressure of the gas is equal to the product of the mole fraction and total pressure.
Total pressure, P = 800 torr
Partial pressure of hydrogen gas = 90 torr
So,
<u>Answer:</u>
<u>For 1:</u> The solubility of magnesium hydroxide at 25°C is
<u>For 2:</u> The concentration of hydroxide ion in the saturated solution at 25°C is
<u>Explanation:</u>
The equation for the ionization of the magnesium hydroxide is given as:
s 2s
Expression for the solubility product of will be:
We are given:
Putting values in above equation, we get:
Hence, the solubility of magnesium hydroxide at 25°C is
Concentration of hydroxide ion in the solution = 2s =
Hence, the concentration of hydroxide ion in the saturated solution at 25°C is
I believe it is:
NH3, CO, N2, Ne, and then He