Trung hòa 200g dd H2SO₄ 4, 9% bằng dd KOH 2M có khối lượng riêng là 1.12g/ml . Tính :

a)Thể tích dd KOH cần dùng cho phản ứng trên ?

b)Khối lượng muối tạo thành ? Khối lượng của dd KOH đã phản ứng?

c)Nồng độ % của muối trong dd muối tạo thành?

Trung hòa 200g dd H2SO4, 9% bằng dd KOH 2M có khối lượng riêng là 1.12g/ml . Tính :

a)Thể tích dd KOH cần dùng cho phản ứng trên ?

b)Khối lượng muối tạo thành ? Khối lượng của dd KOH đã phản ứng?

c)Nồng độ % của muối trong dd muối tạo thành?

@Trần Hữu Tuyển, @Nguyễn Anh Thư

81. Ba is a new comer, and so was Tom.=> Both ....................................
82. This lecture bores me.=> I am ............. 8.3. This is the most delicious cake I have ever tasted.=> I ...............
84.She left university 2 years ago.=> It’s .....................................................
85. they had sold the house at the end of the road.==> The house .................... ..

86. It‘s careless of you to leave the window Open last night.=> You should not......
87.You will catch a cold if you don’t keep your feet dry. => Unless....................
88. We couldn’t go to shool because it rained.=> Because of.........
89.Although he is old, he often plays tennis. => In spite of .......
90.Tom is not used to working so hard => Tom is in .........

91. The day was so cold that we stayed indoor.==> lt.....
92. the man was too tired to keep on working.=>The man was so........
93. TV programmes attract so many viewers. They can satisfy every taste => Because...........
94. He is not good at English, He can’t get the job.=> If........
95. Nam washes his car every week=> Nam wishes his car........
96. he used to wait there all the time => He used to wait there………
97. My friend had the Storekeeper deliver the book case.=> My friend asked………
98. My brother can be so annoying some times.=> I am........
90. Mai was encouraged by the news => The news.........
100. Ba made that dress himself=> The dress........
101. I have never read such a romantic story =>This is………
102 Everyone heard about the accident before I did => I was the
103. the film star wore dark glasses so that no one would recognize him => the film star avoid........
104. we didn't arrive in time to see her => we weren't early........
105. If you don't have a rest, you really will he ill=> unless......
106. the water was so cold that the children could not swim in it=> the water was not.......
107. Ba was arrested by the police=> the police
108. there are a number of people waiting to see you => A number of people .......
109. I hope to see you at Christmas => I am .........
110. your hair is too long , You'd better have it cut => your hair.........
111. are you against working on Sunday? => do you object.........
112. I have to writes 6 letter a day=> There are.........
113. people always laugh at his funny face, he does not like it=> he dislike..........

Lm dc câu nào thì làm giúp mk vs nhé, mk cần gấp, thank all

57. Did you enjoy yourself last night? (time)
58. ldon‘t want to go to the party tonight > I don' t feel like. ........
59. She can' t have more children because of her age. > She is too ...........
60. He lost his money simply because he wasn' t careful > If ............
61 Tom and Mary moved to Paris 20 years ago. >lt is............. ............
62. I haven’t seen so much rain for along time. ==> It..........
63. Please, explain this letter for me! => Please tell me . ..........
64. It is high time for US to go home => It is high time we ............ .....
65. You can’t go in to this restaurant without a jacket and tie. =>Unless ......
66. The question was so difficult that no one could answer it. ==> It was such ......... 67 She hasn’ t finished the letter yet. => This letter ......
68. He isn't good at English. He can' t get a job. => If. .....................
69 Mary doesn't spend much money. She spent much money last month => Mary doesn' t.........
70. The weather isn't t fine We can ’t go for a walk in the woods. => If .................... .. 71. I' ll ask someone to make a new dress. --> I'll have ................
72. The bridge might be built in a hurry.=>. People ....... . ............... ................. . .....
73. You really should be able to dress yourself by now.=> It’s high time ........
74. i wish i hadn’t told him what we were planning to do that evening.=> I regret .......75. I have never eaten with knives and folks before. => This is ........
76. “Why don’t you ask Tom for help, Mary?” Ba said.=> Ba suggested.....
77.Ba is too young to see horror films.=> Ba is not.................
78. They should quit smoking. => They had ....
79. They once started these machines by hand. => They used to .. ..
80. He works hard and he will pass the exam. => If he.........

Lm giúp mk vs , nhanh nha , thank all, còn tiếp