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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A water treatment plant needs to attain a fluoride concentration of .
(a) What mass of must be added to a blending tank of water?
(b) What mass per day of fluoride is ingested by a person who drinks of this water?
Question: (a) What is the charge density of an ion, and what two properties of an ion affect it?
(b) Arrange the following in order of increasing charge density:
(c) How do the properties in part (a) affect the ionic heat of hydration,?
An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d = 1.114 g/mL; ษฑ = 62.07 g/mole) and water (d = 1.00 g/mL) at . The density of the mixture is 1.070g/mL. Express the concentration of ethylene glycol as:
(a) Volume percent
(b) Mass percent
(c) Molarity
(d) Molality
(e) Mole fraction
How would you prepare the following aqueous solutions?
(a) 1.50 kg of 0.0355 m ethanol () from ethanol and water
(b) 445 g of 13.0 mass % HCl from 34.1 mass % HCl.
Which way of expressing concentration includes
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