H<sub>2</sub>O,CH<sub>4</sub>,NH<sub>3</sub>三种化合物沸点高低顺序是()
A、NH3>H2O>CH4
B、H2O>NH3>CH4
C、H2O>CH4>NH3
D、CH4>NH3>H2O
A、NH3>H2O>CH4
B、H2O>NH3>CH4
C、H2O>CH4>NH3
D、CH4>NH3>H2O
A、CO+2H<sub>2sub> = CH<sub>3sub>OH+Q;CO<sub>2sub>+3H<sub>2sub>= CH<sub>3sub>OH+H<sub>2sub>O+Q B、CO+H<sub>2sub>O = CO<sub>2sub>+H<sub>2sub>;4CO+8H<sub>2sub> = C<sub>4sub>H<sub>9sub>OH+3H<sub>2sub>O C、CO+3H<sub>2sub> = CH<sub>4sub>+H<sub>2sub>O+Q ;CO<sub>2sub>+4H<sub>2sub> = CH<sub>4sub>+2H<sub>2sub>O+Q D、CO+2H<sub>2sub> = CH<sub>4sub>+Q;CO<sub>2sub>+3H<sub>2sub> = CH<sub>4sub>+H<sub>2sub>O+Q
A、CH<sub>4sub>+2O<sub>2sub>=2H<sub>2sub>O+CO<sub>2sub> B、2CH<sub>4sub>+3O<sub>2sub>=4H<sub>2sub>O+2CO C、CH<sub>4sub>+O<sub>2sub>=H<sub>2sub>O+CO<sub>2sub> D、CH<sub>4sub>+O<sub>2sub>=H<sub>2sub>O+CO
A、CH<sub>4sub>•H<sub>2sub>O晶体中水是溶剂 B、CH<sub>4sub>•H<sub>2sub>O的组成元素有三种 C、CH<sub>4sub>•H<sub>2sub>O中CH<sub>4sub>和H<sub>2sub>O的质量比为1:1 D、可燃冰能燃烧,说明水具有可燃性
A、CH<sub>4sub>•6H<sub>2sub>O B、CH<sub>4sub>•7H<sub>2sub>O C、C<sub>2sub>H<sub>6sub>•7H<sub>2sub>O D、C<sub>3sub>H<sub>8sub>•7H<sub>2sub>O
A、CH<sub>4sub>•6H<sub>2sub>O B、CH<sub>4sub>•7H<sub>2sub>O C、C<sub>2sub>H<sub>6sub>•7H<sub>2sub>O D、C<sub>3sub>H<sub>8sub>•7H<sub>2sub>O
A、CO、H<sub>2sub>、CH<sub>4sub>、N<sub>2sub> B、Ar<sub>2sub>、CH<sub>4sub>、N<sub>2sub>、H<sub>2sub>、NH<sub>3sub> C、NH<sub>3sub>、CH<sub>4sub>、N<sub>2sub>、CO<sub>2sub> D、H<sub>2sub>O、N<sub>2sub>、H<sub>2sub>、CH<sub>4sub>
A、C<sub>5sub>H<sub>8sub>O B、CH<sub>2sub>OH C、C<sub>4sub>H<sub>8sub>O D、CH<sub>3sub>CH<sub>2sub>COCH<sub>3sub>
A、CH<sub>2sub>O,HN(CH<sub>3sub>)<sub>2sub>.HCl B、 ①CH<sub>3sub>NO<sub>2sub>②H<sub>2sub>/Ni③HNO<sub>2 sub> C、 ①CH<sub>3sub>MgX ②CO<sub>2sub>③H<sub>2sub>O D、 ①NaCN ②水解
A、CO<sub>2sub>、N<sub>2sub> B、CH<sub>4sub>、H<sub>2sub> C、CH<sub>4sub>、CO<sub>2sub> D、O<sub>2sub>、H<sub>2sub>