Name CHE 131, Quiz 3March 5, 2004Useful informationKmolatmLR-- 08206.01. Assign oxidation numbers for each element in the following equation. Then label the oxidizing agent and reducing agent. (3 points)CH4 (g) + 2 O2 (g)CO2 (g) + 2 H2O (g)2. How does fluoride help prevent tooth decay? (2 points)3. Explain why aerosol cans will explode if heated. (2 points)4. Air bags are activated when a severe impact causes a steel bag to compress a spring and electrically ignite a detonator cap. This reaction causes sodium azide (NaN3) to decompose explosively according to the reaction shown below. What mass of NaN3 must be reacted to inflate an air bag to 70.0 L at 25.0 oC and 1.00 atm pressure? Useful atomic masses: Na, 22.99; N, 14.01. (3 points)2 NaN3 (s)2 Na (s) + 3 N2
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