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1)объясните пожалуйста укажите суммарное количество электронов, которые Содержащиеся в ионах N-3,Ba+22)укажите суммарное количество протонов и электронов в ионах Na + и F-
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Предмет:
Химия -
Автор:
fergielove - 5 лет назад
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Ответы 2
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в 2 будет 20 ?
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Автор:
marleydib8 - 5 лет назад
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0
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у меня в варианте а 38 б 21 в 40 г 19
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Автор:
atanasio - 5 лет назад
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0
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27. The correct reading of the number:
8,000,000
A) eight thousand
B) eight million
C) eight thousand million
D) eight thousand and hundred
E) eighteen million
F) eighty million
G) eight hundred million
H) eight hundred
28. In the 1960s, some students have an idea. They painted hundreds of bicycles white and placed them around Amsterdam for people to use. They hoped to save energy, reduce pollution and provide free public transport. It didn’t work- thieves took all the bicycles within weeks! However, more than thirty years later, the ‘white bike’ is back in town- this time with a computer chip to record its every move! To take a bicycle, you have to insert a special card. The new ‘white bike’ is an unusual design with bright colors so there’s no point in stealing one- everyone would know! There is already less traffic in central Amsterdam, because both locals and tourists have been using white bikes.
The right answers are:
Why did students of Amsterdam paint bicycles?
A) it has an unusual design with bright colors
B) both locals and tourists use white bikes
C) there’s no point in stealing one- everyone would know
D) it has a computer chip to record its every move
E) save water energy
F) it provides free public transport
G) for people to use
H) reduce pollution
29. Conditionals II:
A) If I have enough money, I’ll travel all over the world.
B) If I find time, I would help you.
C) If I am you, I will work hard.
D) I’ll travel all over the world, if I have enough money.
E) If I had enough money, I’d travel all over the world.
F) If I find time, I’ll try to help you.
G) I’ll be glad, if my friend comes.
H) If I were you, I would work hard.
30. Completing of the sentence:
The club is for members only. You … you’re a member.
A) can’t go on only if
B) can go in unless
C) can’t go in if
D) can go on the unless
E) can go in only if
F) can’t go on unless
G) can’t go on if
H) can’t go in unless
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Предмет:
Английский язык -
Автор:
mariyah - 5 лет назад
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