Chemistry Class Quiz: Solutions & Gases
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Questions and Answers

What is the mass of mercury consumed when eating 400 g of contaminated fish with a concentration of 0.427 ppm?

  • 1.7 mg
  • 0.057 mg
  • 0.427 mg
  • 0.171 mg (correct)
  • What is the vapor pressure of a solution containing 1.26 grams of naphthalene in 25 grams of benzene at 50°C?

  • 261.3 mmHg (correct)
  • 290 mmHg
  • 250 mmHg
  • 269.3 mmHg
  • What is the calculated molar mass of an enzyme that produces an osmotic pressure of 2.65 mmHg when 0.1 g is dissolved in 20 mL of benzene?

  • 154 g/mol
  • 2025 g/mol
  • 35040 g/mol (correct)
  • 500 g/mol
  • What is the volume of dry Argon gas at 25°C and 800 mmHg pressure given that 0.486 L of it has 80% humidity at 20°C and 790 mmHg?

    <p>0.479 L</p> Signup and view all the answers

    At 20°C, what is the vapor pressure of water that affects the volume calculation of Argon gas at 80% humidity?

    <p>17.53 mmHg</p> Signup and view all the answers

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