Chemistry: Equivalents and Osmoles
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Questions and Answers

What is the mass of one equivalent of Na+?

  • 25g/L
  • 22g/L
  • 20g/L
  • 23g/L (correct)

What is the mass of one equivalent of Ca²?

  • 25g/L
  • 22g/L
  • 23g/L
  • 20g/L (correct)

What does an osmole (osm) represent?

  • The number of freely moving particles (correct)
  • The concentration of a solution
  • The volume of a solution
  • The number of moles of a substance

What happens when a mole of a substance is dissolved in a solution?

<p>It dissociates into multiple particles (D)</p> Signup and view all the answers

What is the unit of measurement for the mass of one equivalent of a substance?

<p>Grams per liter (C)</p> Signup and view all the answers

What is the purpose of semipermeable membrane pressure?

<p>To prevent solvent migration (D)</p> Signup and view all the answers

What is osmotic pressure equal to?

<p>Semipermeable membrane pressure (B)</p> Signup and view all the answers

What is the direction of solvent migration in relation to the solute?

<p>Toward the solute (A)</p> Signup and view all the answers

What is the effect of semipermeable membrane pressure on solvent migration?

<p>It prevents solvent migration (C)</p> Signup and view all the answers

What is the relationship between semipermeable membrane pressure and osmotic pressure?

<p>Semipermeable membrane pressure is equal to osmotic pressure (D)</p> Signup and view all the answers

What is the purpose of osmotic pressure?

<p>To prevent the solvent migration towards the solute (B)</p> Signup and view all the answers

What happens when osmotic pressure is applied to a solution?

<p>The solvent migration towards the solute is prevented (D)</p> Signup and view all the answers

What is the definition of osmotic pressure?

<p>The pressure necessary to prevent the solvent migration towards the solute (D)</p> Signup and view all the answers

What is the result of osmotic pressure on a solution?

<p>The solvent migration towards the solute is prevented (B)</p> Signup and view all the answers

What is the role of osmotic pressure in biological systems?

<p>To maintain the shape and structure of cells (B)</p> Signup and view all the answers

What is a common cause of hypovolemia?

<p>Excessive vomiting (D)</p> Signup and view all the answers

What is a possible consequence of diarrhea?

<p>Hypovolemia (C)</p> Signup and view all the answers

What can cause a person to lose a large amount of fluids?

<p>Burn injury (B)</p> Signup and view all the answers

What is the location of the gland where a certain hormone is stored and released?

<p>Posterior pituitary gland (A)</p> Signup and view all the answers

What is the relationship between the hormone released from the posterior pituitary gland and osmolality?

<p>Directly proportional (A)</p> Signup and view all the answers

What is a possible cause of dehydration?

<p>Insufficient water intake (C)</p> Signup and view all the answers

Which of the following can lead to a decrease in blood volume?

<p>Excessive vomiting (B)</p> Signup and view all the answers

What is the role of the posterior pituitary gland in regulating hormone secretion?

<p>It releases hormones based on osmolality (C)</p> Signup and view all the answers

What is the characteristic of the hormone released from the posterior pituitary gland?

<p>It is directly proportional to osmolality (C)</p> Signup and view all the answers

What determines the amount of hormone released from the posterior pituitary gland?

<p>Osmolality (A)</p> Signup and view all the answers

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