Question: o Question 17 (2 points) Choose the proper coefficients for each substance to balance this equation. ___ CoHa(g) + ___ On(g) ___ CO2(g)+ ___ H2O(g)

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Question 17 (2 points) Choose the proper coefficients for each substance to balance this equation. ___ CoHa(g) + ___ On(g) ___ CO2(g)+ ___ H2O(g) C) 1D (1,3, 2,2 C) 263452 CO) 2,2,4,2 Question 18 (2 points) The lowest (or closest to the ground) layer of our atmosphere is the (_) troposphere. (_) ozone layer. (_) stratosphere. () mesosphere. Question 19 (2 points) Which correctly pairs an indoor pollutant with its source? (_) Formaldehyde and unvented space heaters () O3 and electrical arcing (_) Radon and glues and solvents (_) Nicotine and paint and paint thinners

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