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I. Pronunciation: Find the word which has a different sound in the part underlined.
1. A. theater B. through C. there D. three
2. A. brother B. breath C. either D. clothes
3. A. favorite B. animal C. channel D. programme
4. A. studio B. documentary C. cute D. industry
5. A. prize B. excite C. capital D. design
6. A. designed B. received C. cycled D. rewarded
7. A. tomorrow B. tower C. crowd D. around
8. A. crowd B. cow C. snow D. shower
9. A. house B. colour C. blouse D. housework
10. A. cow B. slow C. window D. know
11. A. play B. island C. train D. paint
12. A. can B. jam C. sand D. Smart
13. A. schedule B. contest C. racket D. every
14. A. yesterday B. send C. destination D. exciting
15. A. karate B. exhausted C. equipment D. pedal
Giai nhanh giup minh vs ak minh can gap
1.B
2.B
3.C
4.A
5.D
Còn đọc thì bạn vào từ điển nhé!
Chúc bạn hok tốt!
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 B
2B
3C
4A
5D
TH : BOTH ; BIRTHDAY ; TEETH ; SOMETHING ; THEATER
D :weather ; they ; that ; this : their
I. 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
II. Find which word does not belong to each group.
1. A. director B. viewer C. audience D. watcher
2. A. international B. local C. national D. boring
4. A. newsreader B. programme C. comedian D. film producer
5. A. reporter B. educational C. exciting D. popular
1. A
2. B
3. C
4. A
5. D
1. A
2. B
3. C
4. A
5. D