Chapter 13: Q13-111P (page 549)
What is Brownian motion, and what causes it?
Short Answer
Brownian motion is random movement of particles in liquid or gas.
The collides of particles with surrounding molecules cause Brownian motion.
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Chapter 13: Q13-111P (page 549)
What is Brownian motion, and what causes it?
Brownian motion is random movement of particles in liquid or gas.
The collides of particles with surrounding molecules cause Brownian motion.
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Which way of expressing concentration includes
Calculate the molarity of each aqueous solution:
(a) 25.5 mL of 6.25 M HCl diluted to 0.500 L with water
(b) 8.25 mL of KI diluted to 12.0 mL with water
What is the minimum mass of ethylene glycol glycol (C2H6O2) that must be dissolved in 14.5 kg of water to prevent the solution from freezing at -12.0oF? (Assume ideal behaviour).
Calculate the molality and van’t Hoff factor (i) for the following aqueous solutions:
(a) 0.500 mass % KCl, freezing point -0.234oc
(b) 1.00 mass % H2SO4, freezing point -0.423oc
Rank the following aqueous solutions in order of increasing
(a) osmotic pressure; (b) boiling point; (c) freezing point;
(d) vapor pressure at 50oC:
(I) 0.100 m NaNO3 (II) 0.100 m glucose (III) 0.100 m CaCl2
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