1
answer
0
watching
469
views
11 Nov 2019
T-Mobile LTE 11:57 sites.google.com 39. The reaction of 1.250 g K with O2 forms 2.273 g of potassium superoxide, a substance used in self-contained breathing devices. Determine the formula for a) KO b) K20 c) KO2 d) KO3 e) KO4 Answer: 40. A 4.235 g sample of a hydrocarbon was burned in oxygen to give 3.810 g of H20 and 13.96 g of CO2. What is the empirical formula of the compound? a) CH b) C2H3 c) C2H5 d) C3H4 e) C4H3 Answer: d 41. The combustion of 0.1703 mole of an unknown hydrocarbon produces 12.28 g H20 and 29.98 g CO2. What is the molar mass of the hydrocarbon? a) 176.0 g/mol b)248.2 g/m g/mol c)30.07 g/mol d)72.11 g/mol e)56.11 Answer e 42. Polyethylene is a polymer consisting of only carbon and hydrogen. If 1.000 g of the polymer is burned in oxygen it produces 1.285 g H20 and 3.138 g CO2. What is the empirical formula for polyethylene? a) C22H29 b) C2H c) C2H3 d) C7Hs e) CH2 Answer: e 43. Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen, and oxygen. If 1.250 g PET is burned in oxygen it produces 0.4328 g H20 and 2.643 g CO2. What is the empirical formula for PET? a) C8H100 d) CH1Os e) CHO Answer: b 44. Citric acid is a compound that contains only carbon, hydrogen, and oxygen. Combustion of 1.000 g citric acid produces 0.4093 g H2O and 1.499 g CO2. What is the empirical formula of citric acid? a) CHO b) C2H30 c) C3H403 d) C3HsO
T-Mobile LTE 11:57 sites.google.com 39. The reaction of 1.250 g K with O2 forms 2.273 g of potassium superoxide, a substance used in self-contained breathing devices. Determine the formula for a) KO b) K20 c) KO2 d) KO3 e) KO4 Answer: 40. A 4.235 g sample of a hydrocarbon was burned in oxygen to give 3.810 g of H20 and 13.96 g of CO2. What is the empirical formula of the compound? a) CH b) C2H3 c) C2H5 d) C3H4 e) C4H3 Answer: d 41. The combustion of 0.1703 mole of an unknown hydrocarbon produces 12.28 g H20 and 29.98 g CO2. What is the molar mass of the hydrocarbon? a) 176.0 g/mol b)248.2 g/m g/mol c)30.07 g/mol d)72.11 g/mol e)56.11 Answer e 42. Polyethylene is a polymer consisting of only carbon and hydrogen. If 1.000 g of the polymer is burned in oxygen it produces 1.285 g H20 and 3.138 g CO2. What is the empirical formula for polyethylene? a) C22H29 b) C2H c) C2H3 d) C7Hs e) CH2 Answer: e 43. Soft drink bottles are made of polyethylene terephthalate (PET), a polymer composed of carbon, hydrogen, and oxygen. If 1.250 g PET is burned in oxygen it produces 0.4328 g H20 and 2.643 g CO2. What is the empirical formula for PET? a) C8H100 d) CH1Os e) CHO Answer: b 44. Citric acid is a compound that contains only carbon, hydrogen, and oxygen. Combustion of 1.000 g citric acid produces 0.4093 g H2O and 1.499 g CO2. What is the empirical formula of citric acid? a) CHO b) C2H30 c) C3H403 d) C3HsO
Nelly StrackeLv2
28 Apr 2019