题目

用NA表示阿伏加德罗常数的值，下列叙述正确的是                                                                                                                   A.含有NA个氦原子的氦气在标准状况下的体积约为11.2L                                                                                                             B.25℃，1.01×105Pa，64gSO2中含有的原子数为3NA                                                                                                                 C.在常温常压下，11.2L Cl2含有的分子数为0.5NA                                                                                                                                                                                                         D.标准状况下，11.2LH2O含有的分子数为0.5NA                                                                                                                      答案：B

查看本题答案和解析