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Bài 1: Find the word which has a different sound in the part underlined
1, A. the B. there C. think D. they
2, A. earth B. feather C. theater D. thanks
3, A. when B. where C. detective D. best
4, A. clumsy B. cute C. just D. but
5, A. weather B. newsreader C. teaching D. repeat
6, A. game B. relax C. national D. channel
7, A. programme B. sport C. most D. show
8, A. thirty B. them C. both D. theme
9, A. schedule B. when C. red D. comedy
10, A. brother B. through C. then D. weather
Exercise 1: Find the word which has a different sound in the part underlined.
1. A. when B. where C. best D. detective
2. A. weather B. newsreader C. teaching D. repeat
3. A. clumsy B. cute C. but D. just
4. A. earth B. thanks C. feather D. theater
5. A. although B. think C. with D. they
6. A. thirty B. theme C. both D. breathe
7. A. brother B. weather C. through D. than
8. A. schedule B. comedy C. educate D. when
9. A. channel B. game C. national D. relax
10. A. show B. programme C. sport D. most
11. A. this B. feather C. smooth D. south
12. A. leather B. that C. theatre D. then
13. A. nothing B. gather C. method D. death
14. A. something B. brother C. them D. weather
15. A. those B. there C. thank D. without
16. A. soothe B. south C. thick D. athlete
17. A. healthy B. northern C. thirsty D. mouth
18. A. this B. these C. them D. earth
19. A. think B. month C. everything D. clothing
20. A. sixth B. another C. teeth D. author
21. A. tooth B. clothing C. bath D. both
22. A. gather B. monthly C. father D. brother
23. A. though B. thank C. through D. thin
24. A. clip B. give C. twice D. stupid
25. A. studio B. documentary C. cute D. stupid
Find the word which has a different sound in the underlined part
1. A. class B. answer C. fat D. fast Âm a
2. A. great B. teacher C. stream D. meat Âm ea
3. A. dear B. wear C. nearly D. appear Âm ea
4. A. washes B. passes C. lakes D. couches Âm es
5. A. smile B. time C. kite D. miss Âm i
6. A. polluted B. prepared C. recycled D.watered Âm ed
7. A. the B. there C. think D. they Âm th
8. A. earth B. feather C. theater D. thanks Âm th
9. A. when B. where C. detective D. best Âm e
10. A. clumsy B. cute C. just D. but Âm u
11. A. weather B. newsreader C. teaching D. repeat Âm ea
12. A. game B. relax C. national D. channel Âm a
13. A. programme B. sport C. most D. show Âm o
14. A. thirty B. them C. both D. theme Âm th
15. A. schedule B. when C. red D. comedy Âm e
Find the word which has a different sound in the underlined part
1. A. class B. answer C. fat D. fast Âm a
2. A. great B. teacher C. stream D. meat Âm ea
3. A. dear B. wear C. nearly D. appear Âm ea
4. A. washes B. passes C. lakes D. couches Âm es
5. A. smile B. time C. kite D. miss Âm i
6. A. polluted B. prepared C. recycled D.watered Âm ed
7. A. the B. there C. think D. they Âm th
8. A. earth B. feather C. theater D. thanks Âm th
9. A. when B. where C. detective D. best Âm e
10. A. clumsy B. cute C. just D. but Âm u
11. A. weather B. newsreader C. teaching D. repeat Âm ea
12. A. game B. relax C. national D. channel Âm a
13. A. programme B. sport C. most D. show Âm o
14. A. thirty B. them C. both D. theme Âm th
15. A. schedule B. when C. red D. comedy Âm e
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
\(n_{FeSO4}=n_{Fe}=0,035\left(mol\right)\)
\(m_{FeSO4}=0,035.152=5,32\left(g\right)\)
\(C\%_{FeSO4}=\frac{5,32}{99,72}.100\%=5,33\%\)
\(n_{CuSO4}=n_{Fe}=0,035\left(mol\right)\)
\(n_{CuSO4}dư=0,0625-0,035=0,0275\left(mol\right)\)
\(m_{CuSO4}dư=0,0275.160=4,4\left(g\right)\)
\(C\%_{CuSO4}dư=\frac{4,4}{99,72}.100\%=4,41\%\)
khác nhau àk
1 A. leather B. that C. theatre D. then
2 A. nothing B. gather C. method D. death
3 A. something B. brother C. them D. weather
4 A. those B. there C. thank D. without
5 A. soothe B. south C. thick D. athlete
6 A. healthy B. northern C. thirsty D. mouth
7 A. this B. these C. them D. earth
8 A. this B. feather C. smooth D. south
9 A. think B. month C. everything D. clothing
1. A. bed B. setting C. decide D. get
2. A. easy B. eat C. learn D. tea
3. A. sit B. in C. if D. fine
4. A. child B. watch C. chin D. school
5. A. come B. no C. open D. home
III. Find the word which has a different sound in the underlined part.
1. A. when B. where C. best D. detective
2. A. weather B. newsreader C. teaching D. repeat
3. A. clumsy B. cute C. but D. just
4. A. earth B. thanks C. feather D. theater
5. A. the B. think C. with D. they
6. A. plays B. says C. days D. stays
7. A. what B. who C. where D. when
8. A. sport B. start C. listen D. eat
9. A. game B. geography C. vegetable D. change
10. A. station B. intersection C. question D. invitation
11. A. teacher B. children C. lunch D. chemistry
Chọn mỗi từ phát âm khác của mỗi nhóm
1. A. Bed. B. Setting. C. Decide. D. Get
2. A. Easy. B. Eat. C. Learn. D. Tea
3. A. Sit. B. In. C. If. D. Fine
4. A. Child. B. Watch. C. Chin. D. School
5. A. Come. B. No. C. Open. D. Home
6. A. Theater. B. There. C. Through. D. Three
7. A. Brother. B.Breath. C. Either. D. Clothes
8. A. Clip. B. Give. C. Twice. D. Stupid
9. A. Favorite. B.Animal. C. Channel. D. Programme
10. A. Studio. B. Documentary. C. Cute. D. Industry
11. A. When. B. Where. C. Best. D. Decective
12. A. Weather. B. Newsreader. C. Teaching. D. Repeat
13. A. Clumsy. B. Cute. C. But. D. Just
14. A. Earth. B. Thanks. C. Feather. D. Theater
15. A. The. B. Think. C. With. D. They
16. A. Something. B. Theatre. C. Neither. D. Monthly
17. A. Other. B. Thinking. C. Healthy D. Birthday
18. A. Thailand. B. Weatherman. C. Anything. D. Thanksgiving
19. A. Earth. B. Through. C. Both. D. There
20. A. Growth. B. Three. C. Feather. D. Thing
21. A. This. B. Think. C. Thank. D. Thieves
22. A. Gather. B. Bathe. C. Birthday. D. Weather
23. A. Tooth. B. Breathe. C. Through. D. Earth
24. A. Thirty. B. Than. C. Therefore. D. Those
25. A. Mouth. B.Thursday C. Nothing. D. Worthy
26. A. Both. B. Teeth. C. Smooth. D. Fourth
27. A. Weather. B.Wealthy. C. Clothing. D. Bathing
28. A. Though. B. Thank. C. Throw. D. Thin
29. A. Southern. B. Neither. C. Thus. D. Third
30. A. Author. B. Those. C. Width. D. Think
31. A. Thin. B. Than. C. They. D. There
32. A. Birthday. B. Earth. C. Worth. D. There
33.another. B. Death. C. Brother. D. Though