A. | B. | C. | D. |
A.0.28 mol | B.0.31 mol | C.(n+0.2) mol | D.(n+0.4) mol |
A. | B. | C. | D.有机氮 |
A.它是离子晶体,稳定,高温也不分解 | B.它的水溶液显酸性 |
C.能和强碱反应放出气体PH3 | D.该物质中含有共价键和离子键 |
A.1∶2∶3∶4∶5 | B.2∶1∶1∶2∶2 |
C.1∶1∶4∶3∶5 | D.1∶2∶4∶3∶5 |
A.3∶5 | B.5∶3 | C.3∶7 | D.1∶2 |
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