用NA表示阿伏加德罗常数的值，下列说法正确的是
| A．11.2 L氧气中所含有的原子数为NA |
| B．7.8g的Na2O2中含有的阴离子的数目为0.2NA |
| C．0.10 mol Fe 粉与足量水蒸气反应生成的H2分子数为0.10 NA |
| D．54 g Al分别与足量的稀硫酸及氢氧化钠溶液反应失去的电子数都是6NA |
相关试题
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
粤公网安备 44130202000953号