9. If 200 mL of a 2.5 x 10-5 mol/L solution of Ni(NO3), was mixed with 200 mL of a 4.86 X
102 mol/L solution of KOH, determine if a precipitate will form. The Kg, of Ni(OH)21, is 6
X 10-16 SHOW ALL WORK.
(6 marks)

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.