0  442949  442957  442963  442967  442973  442975  442979  442985  442987  442993  442999  443003  443005  443009  443015  443017  443023  443027  443029  443033  443035  443039  443041  443043  443044  443045  443047  443048  443049  443051  443053  443057  443059  443063  443065  443069  443075  443077  443083  443087  443089  443093  443099  443105  443107  443113  443117  443119  443125  443129  443135  443143  447090 

2.能表示阿伏加德羅常數(shù)數(shù)值的是                                    (   )

    A.1 mol 金屬鈉含有的電子數(shù)

    B.標(biāo)準(zhǔn)狀況下,22.4 L 苯所含的分子數(shù)

    C.0.012 kg 12C所含的原子數(shù)

    D.1 L 1 mol·L-1硫酸溶液所含的H+數(shù)

試題詳情

1.下列說(shuō)法正確的是                                             (   )

    A.物質(zhì)的量就是一定體積的物質(zhì)的質(zhì)量

    B.阿伏加德羅常數(shù)就是6.02×1023

    C.鈉的摩爾質(zhì)量等于它的相對(duì)原子質(zhì)量

    D.在標(biāo)準(zhǔn)狀況下,1 mol 任何氣體的體積都約為22.4 L

試題詳情

第一節(jié):短文改錯(cuò)(共10小題;每小題1分,共10分)

  以下標(biāo)有題號(hào)的每一行均有一個(gè)錯(cuò)誤,請(qǐng)找出,并按下列情況改正:

   此行多一詞:把多余的詞用斜線(\)劃掉,在該行右邊橫線上寫出該詞,并也用斜線劃掉。

   此行缺一詞:在缺詞處加一個(gè)漏字符號(hào)(^),在該行右邊橫線上寫出該加的詞。

此行錯(cuò)一詞:在錯(cuò)詞的下面劃一橫線,在該行右邊橫線上寫出改正后的詞。

At a Friday night, a poor young artist stood at the gate of the    76._____

subway station and played his violin with large piece of paper on  77._____

the ground.Before long , he was surrounding with people, who     78._____

were all attracted by the word on that paper. It said,“ last night,   79______

a gentleman put an important thing into my hat by mistaken. Please  80._____

come to claim it soon.” Seeing this , people wondered why it could    81.____

be. After about half an hour, a man came and brought         82______

back his lottery(彩票)                   

which won a reward of $500,000. Later someone asked the violinist:    83._____  

“ Why don’t you take the lottery ticket for yourself? ”He said,      84._____

“While I don’t have much money, I live happily. However , I lose     85._____

honesty, I won’t be happy forever.”     

試題詳情


同步練習(xí)冊(cè)答案