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III. Choose the word whose underlined part is pronounced differently:
1. A. tooth B. clothing C. bath D. both
2. A. gather B. monthly C. father D. brother
3. A. though B. thank C. through D. thin
4. A. clip B. give C. twice D. stupid
5. A. studio B. documentary C. cute D. stupid
Phonetics: Choose the word whose underlined part is pronounced differently:
1. A. tooth B. clothing C. bath D. both
2. A. gather B. monthly C. father D. brother
3. A. though B. thank C. through D. thin
4. A. clip B. give C. twice D. stupid
5. A. studio B. documentary C. cute D. stupid
a)\(Fe+CuSO4-->Cu+FeSO4\)
b) \(n_{Fe}=\frac{1,96}{56}=0,035\left(mol\right)\)
\(m_{CuSO4}=\frac{100.10}{100}=10\left(g\right)\)
\(n_{CuSO4}=\frac{10}{160}=0,0625\left(mol\right)\)
Do \(0,036>0,0625\Leftrightarrow\) \(n_{Fe}< n_{CuSO4}\)
=> CuSO4 dư.Tính theo n chất hết (Fe)
Chất rắn B là Cu
\(n_{Cu}=n_{Fe}=0,035\left(mol\right)\)
\(m_{Cu}=0,035.64=2,24\left(g\right)\)
c) m dd A =\(m_{Fe}+m_{ddCuSO4}-m_{Cu}=1,96+100-2,24=99,72\left(g\right)\)
dd A là FeSO4 và CuSO4 dư
\(n_{FeSO4}=n_{Fe}=0,035\left(mol\right)\)
\(m_{FeSO4}=0,035.152=5,32\left(g\right)\)
\(C\%_{FeSO4}=\frac{5,32}{99,72}.100\%=5,33\%\)
\(n_{CuSO4}=n_{Fe}=0,035\left(mol\right)\)
\(n_{CuSO4}dư=0,0625-0,035=0,0275\left(mol\right)\)
\(m_{CuSO4}dư=0,0275.160=4,4\left(g\right)\)
\(C\%_{CuSO4}dư=\frac{4,4}{99,72}.100\%=4,41\%\)
1. A. present B. sound C. sweet D. season
2. A. blossom B. chess C. messy D. passion
3. A. cession B. sleep C. say D. exciting
4. A. spend B. city C. bicycle D. nation
5. A. student B. sugar C. stainless D. slang
6. A. sheet B. sad C. show D. shut
7. A. expensive B. instead C. outside D. mission
8. A. sing B. special C. social D. artificial
9. A sugar B. spring C. school D. Summer
10. A. special B. rice C. she D. Should
11. A. cook B. calendar C. celebrate D. Clean
12. A. wish B. machine C. shrimp D. Watch
13. A. decorate B. calendar C. celebrate D. clean
14. A. shopping B. sugar C. sure D. summer
15. A. centre B. special C. decide D. rice
16. A. school B. chemistry C. peach D. Christmas
17. A. summer B. singer C. study D. tables
18. A. sure B. stupid C. spring D. snail
19. A. ocean B. ceiling C. city D. circle
20. A. ache B. school C. machine D. chemical
I. Choose the word whose underlined part is pronounced differently from that of the others.
1. A. bread B. coffee C. meat D. tea
2. A bath B. bathe C. great D. make
3. A. leave B. read C. ready D. week
4. A. hungry B. pupil C. Sunday D. up
5. A. but B. come C. so D. much
I. Choose the word that is different from the rest in each group by circling A, B, C or D.
1. A. ill | B. sick | C. sad | D. unwell |
2. A. doctor | B. nurse | C. dentist | D. teacher |
3. A. tablet | B. chocolate | C. medicine | D. pill |
4. A. virus | B. flu | C. headache | D. stomachache |
5. A. couching | B. sneezing | C. disease | D. runny nose |
I. Choose the word whose underlined part is pronounced differently from that of the others.
1. A. bread B. coffee C. meat D. tea
2. A bath B. bathe C. great D. make
3. A. leave B. read C. ready D. week
4. A. hungry B. pupil C. Sunday D. up
5. A. but B. come C. so D. much
I. Choose the word that is different from the rest in each group by circling A, B, C or D.
1. A. ill | B. sick | C. sad | D. unwell |
2. A. doctor | B. nurse | C. dentist | D. teacher |
3. A. tablet | B. chocolate | C. medicine | D. pill |
4. A. virus | B. flu | C. headache | D. stomachache |
5. A. couching | B. sneezing | C. disease | D. runny nose |
1. D
2. D
3. A
4. B
5. C
I.Choose the word whose underlined part is pronounced differently from the other three in each question.
1. A. gather B. bathe C. birthday D. this
2. A. tooth B. thirty C. Thursday D. weather
3. A. thieves B. worthy C. earth D. nothing
4. A. thank B. that C. breath D. third
5. A. healthy B. everything C. rather D. bath