Ответ по предмету Химия: a)2Na+So4= NSO4 б)SU2+2oH-->CU(AH)2↓ в)Ca2++S-->COS Помогите пожалуйста да 50 баллов Срочна

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Вроде легко но много, помогите на час дали.....
23 I ____________ my shoes because they were dirty. A took       B took off       C took out      D took from
24 Today is ____________ than yesterday A much cold     B more cold       C colder     D cold 25
We don’t ____________ stay at school after the lesson today. A must      B have to      C ought to      D should
26.Which book are you ____________ in the summer? A read      B going to read      C will read       D have read
27 We ____________ go to school yesterday because it was Sunday. A don’t      B wasn’t      C didn’t       D weren’t 28.This book is ____________ than that one. A difficulty      B much difficult      C more difficult     D difficult
29.What ____________ you going to do tomorrow evening? A did      B was       C are       D can
30 ____________ Russian? –No, I can’t. A Can you speak      B You can speak      C Speak      D Speak you
31 Do you come from Mexico? – No, I ____________. I come from Costa Rica. A ’m not      B don’t       C didn’t       D doesn’t
32 She ____________ television every evening. A watch      B watches       C to watch      D sees
33 He goes skiing ____________ winter. A very       B ever        C every       D always
34 What time do you ____________ up on school days? A used     B usual     C use      D usually
35 The Pyramid of the Sun is ____________ Mexico. A from      B on      C in      D at
36 Are there ____________ big sports stadiums near your home? A any      B some     C the      D a
37 I ____________ visit my grandma on Sunday afternoons. A some time     B sometimes     C some      D sometime
38 ____________ the most famous singer from your country? A Who’s       B Whose      C How’s      D What’s
39 How ____________ do you watch a film in English? – Every month. A often      B much      C many        D every
40 Are you good ______ swimming? A in     B for      C on      D at
41 Stella’s father is a ____________ . He built my house. A build     B building      C builder      D built
42 Is this Stella’s hat? – No, it isn’t Stella’s, it’s ____________ . A me       B I       C my       D mine
43 ____________ Language Powerbook is this? Is it yours? A Who’s      B Whose      C How’s      D Who
44 We ____________ the history of Napoleon last year. A study      B studying       C studies       D studied
45 ____________ about calculus in your Maths class? A Had you learn      B did you learnt      C Was you learn      D Did you learn
46 I ____________ this coat at a shop in London last summer. A bought      B brought      C buy      D bring
47 The hunter didn’t ____________ the tiger with his gun. A shot      B shooting      C shoot      D shoots
48 How ____________ CDs do you buy each year? --About 25, I think. A many      B much      C any      D some
49 How ____________ sugar do you put in your coffee? A many      B much      C any       D some
50 Can you get me a ____________ of mineral water please? A bag      B packet       C box      D bottle
51 How much homework ____________ every weekend? A do you have to do   B are you have to do C do you must to do D are you must to do
52 Do you eat ____________ fruit? A many     B much      C a lot of      D a few
53 ____________ stand and touch your toes? A Can you      B Have you      C Are you       D Able you
54 We can go to school and use the library on Saturday afternoons if you like. But we ____________ A mustn’t.      B don’t have to.      C can’t.      D don’t used to.
55 Can you speak ____________? I can’t understand you. A slow       B more slowly      C more slow      D slowest
56 What are you doing ____________? A every day      B at the moment      C often      D usually
57 What is Stella ____________ today? A wear      B wearing C to wear      D wore
58 The car is driving ____________ the tunnel under the Thames. A across      B through      C over      D between
59 John is visiting his girlfriend. He always ____________ her on Friday evenings. A visiting      B visits      C visited      D to visit
60 Her mobile phone is ____________ than mine. A much expensive     B more expensive     C many expensive    D a lot expensive
61 My Mum says my brother’s room is ____________ than mine. A tidy      B tidier      C tidiest      D tidily
62 Sao Paolo is ____________ biggest city in South America. A a      B an      C the      D than
63 Don’t buy that CD. It’s not very good. You ____________ enjoy it. A will     B can     C won’t     D must
64 ____________ you ever visited an English-speaking country? A Was      B Did      C Have      D Are
65 ____________ you going to be at home this evening? A Was      B Did      C Have      D Are
66 Mrs Thomas isn’t going ____________ the health club. A join      B to join      C joining      D joined
67 David borrowed some money ____________ a car. A to buy     B buying       C buy      D going to buy

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a)2Na+So4= NSO4 б)SU2+2oH-->CU(AH)2↓ в)Ca2++S-->COS Помогите пожалуйста да 50 баллов Срочна

Ответы

a)2Na+So4= NSO4
б)SU2+2oH-->CU(AH)2↓
в)Ca2++S-->COS
Помогите пожалуйста да 50 баллов Срочна