Unformatted text preview: 3-in each solution? c. 0.150 M Al(NO 3 ) 3 1 CHEM 101 Recitation Problems Week 8 27. A laboratory procedure calls for making 400.0 mL of a 1.1 M NaNO 3 solution. What mass of NaNO 3 (in g) do we need? 29. If 123 mL of a 1.1 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution? 34. Identify each energy exchange as primarily heat or work and determine the sign of Δ E (positive or negative) for the system. 1. A rolling billiard ball collides with another billiard ball. The first billiard ball (defined as the system) stops rolling after the collision. 2. A book is dropped to the floor. (The book is the system.) 3. A father pushes his daughter on a swing. (The daughter and the swing are the system.) 38. The air in an inflated balloon (defined as the system) warms over a toaster and absorbs 115 J of heat. As it expands, it does 77 kJ of work. What is the change in internal energy for the system? 2...
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- Fall '07