Question

chemistry homework

19.(14 points total) Two common compounds used to generate energy are gasoline (C8H18) and natural gas (mostly methane (CH4). Unfortunately, both methane and gasoline produce the greenhouse gas carbon dioxide (CO2) when combusted. a. (4 points) Balance the reactions below for the combustion of methane and gasoline. - CH4 (g) + __02(g) → __CO2(g) + ___ H20 (g) _C8H18 (g) +_02(g) → _CO2(g) +_H20 (g) b. (10 points) Which gas (25.0 g of methane or 25.0 g of gasoline) generates a larger volume of carbon dioxide at standard temperature and pressure (STP, 1 atm, 0°C) when combusted with excess oxygen? What is the volume of CO2 produced? Show all work. True or false. Indicate if the statement is true or false. If false, change one or more of the underlined words to make the statement true. (2 points each) 20. Silicon (solid Si) is a molecular solid. 21. One mole of chlorine gas (Cl2) at standard temperature and pressure (STP, 1 atm, 0°C) would have the same volume of one mole of argon gas (Ar) at STP. 22. Glycine, an amino acid used to make proteins, is a nonpolar compound that is insoluble in water. HHO H-N-c-c--H glycine

Answer 1

saygen. 6 a while balancing reaction of hydrocarbon with oxygen undergoing combustion first balance mo of carson, hydrogen then and and then erug + 2029 - coz igs + 2H2O(g) Co Hiligo + 2502 (gs geosys + 9H20 (gs b) Reaction takes place is stoichiometric ratio, in a balanced chemical xn. so. I mole Chy produces I mole co2 g gan= 22.42 27 (12+4) g chu produces 22.42 cod at stol Chy produces 22.4l CO2 g. - 25g hly produces 2214 25 1 028 = 351 oz. 169

And I mole ghis produces 8 moles q co z + (12 x 8 + 18 x 1) g 18H18 produces & moles of coz g 14g CSHIB produces & moles of cong [1mole gas 25g eg this produces a 8 x 25*22.4 L co2 g = 39,29 € CO₂ ga so gasoline, GBH18 produces maximum volume og = 22.4L at STP 7 114 102 gas.