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)
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
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.”
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