Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 147
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This post was last edited by ljtjbx on 2015-8-18 08:05. Multiple-choice question: Which of the following statements about ethylene and polyethylene is incorrect? ( ) A. Ethylene is more reactive than polyethylene. B. Ethylene is a pure substance that is gaseous at room temperature, while polyethylene is solid and is a mixture. C. When equal amounts of ethylene and polyethylene are completely burned, the amounts of CO2 and H2O produced are equal. D. When equal masses of ethylene and polyethylene are completely burned, the masses of CO2 and H2O produced are equal. C
The following description of ethylene and polyethylene is incorrect: (C)
The incorrect description of ethylene and polyethylene is (C)
I think the answer should be C:victory::victory:
The following statements about ethylene and polyethylene are incorrect (BD)
Multiple choice: The following statement about ethylene and polyethylene is incorrect (C). A. Ethylene is more reactive than polyethylene. B. Ethylene is a pure substance that is gaseous at room temperature, while polyethylene is solid and is a mixture. C. When equal amounts of ethylene and polyethylene are completely burned, the amounts of CO2 and H2O produced are equal respectively. D. When equal masses of ethylene and polyethylene are completely burned, the masses of CO2 and H2O produced are equal respectively
B. Ethylene is a pure substance that is gaseous at room temperature, while polyethylene is solid; it is a mixture
The following statement about ethylene and polyethylene is incorrect: (C) A. Ethylene is more reactive than polyethylene. B. Ethylene is a pure substance that is gaseous at room temperature, while polyethylene is a solid and is a mixture. C. When equal amounts of ethylene and polyethylene are completely burned, the amounts of CO2 and H2O produced are equal. D. When equal masses of ethylene and polyethylene are completely burned, the masses of CO2 and H2O produced are equal
The following description of ethylene and polyethylene is incorrect: C
The following statement about ethylene and polyethylene is incorrect: (D) A. Ethylene is more reactive than polyethylene. B. Ethylene is a pure substance that is gaseous at room temperature, while polyethylene is a solid and is a mixture. C. When equal amounts of ethylene and polyethylene are completely burned, the amounts of CO2 and H2O produced are equal. D. When equal masses of ethylene and polyethylene are completely burned, the masses of CO2 and H2O produced are equal