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Dafna11 [192]
3 years ago
11

__________ lenses refract light rays in toward a central point. When this lens is held close to your eye, the image is magnified

and right side up. A) Concave B) Convex C) Prismatic D) Refractive
Chemistry
2 answers:
saul85 [17]3 years ago
8 0
<span>__________ lenses refract light rays in toward a central point. When this lens is held close to your eye, the image is magnified and right side up.

</span>
<span>B) Convex</span>
andreev551 [17]3 years ago
7 0
The answer would be either a concave or b convex
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If 0.0106 g of a gas dissolves in 0.792 L of water at 0.321 atm, what quantity of this gas (in grams) will dissolve at 5.73 atm?
Alex73 [517]

Answer:

0.189 g.

Explanation:

  • This problem is an application on <em>Henry's law.</em>
  • Henry's law states that the solubility of a gas in a liquid is directly proportional to its partial pressure of the gas above the liquid.
  • Solubility of the gas ∝ partial pressure
  • If we have different solubility at different pressures, we can express Henry's law as:

<em>S₁/P₁ = S₂/P₂,</em>

S₁ = 0.0106/0.792 = 0.0134 g/L and P₁ = 0.321 atm

S₂ = ??? g/L and P₂ = 5.73 atm

  • So, The solubility of the gas at 5.73 atm (S₂) = S₁.P₂/P₁ = (0.0134 g/L x 5.73 atm) / (0.321 atm) = 0.239 g/L.

<em>The quantity in (g) = S₂ x V = (0.239 g/L)(0.792 L) = 0.189 g.</em>

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