IV/ fill in the blank with an appropriate preposition

1. The Ao dai consists ......of.......a long silk tunic thatis slit on the sides and worn over loose pants

2. My sister was born........in.... 30th April 2006

3. We should travel......at....... 7 o'clock in the morning

4. Do you often spend your friends and relatives beautiful cards.......at...... Christmas

5. There are footnotes written....in........ The bottom of each page in this book

6. Try to be pleasant....with........ Everybody

Mọi người giúp mình với, mình đang cần gấp, xin cảm ơn ạ

IV/ fill in the blank with an appropriate preposition

1. The Ao dai consists ......of.......a long silk tunic thatis slit on the sides and worn over loose pants

2. My sister was born......in...... 30th April 2006

3. We should travel......at....... 7 o'clock in the morning

4. Do you often spend your friends and relatives beautiful cards......at....... Christmas

5. There are footnotes written......in...... The bottom of each page in this book

6. Try to be pleasant......with...... everybody

Mọi người giúp mình với, mình đang cần gấp, xin cảm ơn ạ

V/ fill in blank with an appropriate preposition

1. My brother was born ......on......September 15, 1990

2. She will be here ......from.......Monday........to.......Saturday

3. We will come to see them .....between.......7 AM and 10.30 AM

4. Mary likes watching the stars.......at....night

5. The post office will close......at......... 4.30 PM

6. The bus collected us.....at.......5 o'clock.....in........the morning

V/Follow in blank without an appropriate preposition

1. My brother was born on September 15, 1990

2. She will be here on Monday and Saturday

3. We will come to see them between 7 AM and 10.30 AM

4. Mary likes watching the stars at night

5. The post office will close at 4.30 PM

6. The bus collected us at 5 o'clock in the morning

V/ fill in blank with an appropriate preposition

1. My brother was born .....on.... September 15, 1990

2. She will be here .....from.... Monday ......to..... Saturday

3. We will come to see them .....between....7 AM and 10.30 AM

4. Mary likes watching the stars .....at... night

5. The post office will close ......at.... 4.30 PM

6. The bus collected us .......at..... 5 o'clock .......in...... the morning

IV/ fill in the blank with appropriate prepositions

1. How far did he drive ?-.......at.....30 miles an hour

2. How many chapters does this book consist.....of......?

3. Vietnam is famous.......for..... Its cultural heritages

7. I will be home ........on....... Sunday November 5

8. This brochure is full......of.....useful information

9. They still keep in touch.......with....... Each other

10. She doesn't depend......on...... Her parents

PTHH: \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

Ta có: \(\left\{{}\begin{matrix}m_{H_2SO_4}=588\cdot5\%=29,4\left(g\right)\Rightarrow n_{H_2SO_4}=\dfrac{29,4}{98}=0,3\left(mol\right)\\n_{Al_2O_3}=\dfrac{20,4}{102}=0,2\left(mol\right)\end{matrix}\right.\)

Xét tỉ lệ: \(\dfrac{0,2}{1}>\dfrac{0,3}{3}\) \(\Rightarrow\) Al₂O₃ còn dư

\(\Rightarrow n_{Al_2\left(SO_4\right)_3}=0,1\left(mol\right)=n_{Al_2O_3\left(dư\right)}\)

\(\Rightarrow C\%_{Al_2\left(SO_4\right)_3}=\dfrac{0,1\cdot342}{20,4+588-0,1\cdot102}\cdot100\%\approx5,72\%\)

\(d,ĐK:x\ge1\\ PT\Leftrightarrow\sqrt{x-1}=2+\sqrt{x+1}\\ \Leftrightarrow x-1=2+x+1+4\sqrt{x+1}\\ \Leftrightarrow4\sqrt{x+1}=-4\Leftrightarrow x\in\varnothing\left(4\sqrt{x+1}\ge0\right)\\ g,ĐK:x\ge\dfrac{1}{2}\\ PT\Leftrightarrow x+\sqrt{2x-1}+x-\sqrt{2x-1}+2\sqrt{\left(x+\sqrt{2x-1}\right)\left(x-\sqrt{2x-1}\right)}=2\\ \Leftrightarrow2x+2\sqrt{x^2-2x+1}=2\\ \Leftrightarrow\sqrt{\left(x-1\right)^2}=\dfrac{2-2x}{2}=1-x\\ \Leftrightarrow\left|x-1\right|=1-x\\ \Leftrightarrow\left[{}\begin{matrix}x-1=1-x\left(x\ge1\right)\\x-1=x-1\left(x< 1\right)\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=1\left(tm\right)\\x\in R\end{matrix}\right.\)

Ha's house is small and it's in the country

Ha's house is small and It's in the country

^{_{Ha's house is small and It's in the country}}

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