Which of the following is the physical properties of hydrogen?
A: low density
B: The boiling point of hydrogen is about -253 ℃.
C: It has three isotopes.
D: It reacts with oxygen to form water.
E: It can react with [img=47x22]1803a8273e77b4a.png[/img] to form [img=34x19]1803a827468c498.png[/img].
F: It reacts with nitrogen to form ammonia.
G: It can react with CO to form methane.
H: It can react with [img=33x22]1803a8274f0cd41.png[/img] to form CO.
A: low density
B: The boiling point of hydrogen is about -253 ℃.
C: It has three isotopes.
D: It reacts with oxygen to form water.
E: It can react with [img=47x22]1803a8273e77b4a.png[/img] to form [img=34x19]1803a827468c498.png[/img].
F: It reacts with nitrogen to form ammonia.
G: It can react with CO to form methane.
H: It can react with [img=33x22]1803a8274f0cd41.png[/img] to form CO.
举一反三
- Can you tell me what the picture below is?____________ form[img=717x430]180319d6f680253.png[/img]
- Consider the following game in extensive form (as is shown in picture 11 - 22) :Write this game in normal-form.[img=358x290]17b2afdb8e09387.png[/img]
- Consider the following game in extensive form (as is shown in picture 11 - 22) : Find all the Nash equilibria in this game.[img=358x290]17b2afdb8e09387.png[/img]
- The particular solution of the differential equation [img=206x26]1803e259de301a6.png[/img] has the form [img=130x25]1803e259e77bc83.png[/img] .
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]