Giúp mình II với ạ
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III,
er translater,programmer, creater, speaker, disgner, researcher, mariner, developer | ist artist, guitarist, journalist, psychologist, scientist, pharmacist, | or contractor,actor, advisor, director,inventor, investor |
WRITING-I
1.will be used in the future.
2. she lives far from school, she always go to school early.
3.been playing chess for 5 years.
4.of his sickness, he goes to school.
1 B
2 D
3 C
4 D
5 C
6 B
7 B
8 B
9 B
10 B
11 A
12 C
13 C
14 C
15 C
16 D
17 A
18 A
a) \(K^I_x\left(CO_3\right)^{II}_y\)
Theo quy tắc hóa trị: x.I = y.II
=> \(\dfrac{x}{y}=\dfrac{II}{I}=\dfrac{2}{1}\)
=> K2CO3
b) \(Fe^{III}_xO_y^{II}\)
Theo quy tắc hóa trị: x.III = y.II
=> \(\dfrac{x}{y}=\dfrac{II}{III}=\dfrac{2}{3}\)
=> Fe2O3
c) \(Al^{III}_x\left(SO_4\right)^{II}_y\)
Theo quy tắc hóa trị: x.III = y.II
=> \(\dfrac{x}{y}=\dfrac{II}{III}=\dfrac{2}{3}\)
=> Al2(SO4)3
d) \(H^I_xS^{II}_y\)
Theo quy tắc hóa trị: x.I = y.II
=> \(\dfrac{x}{y}=\dfrac{II}{I}=\dfrac{2}{1}\)
=> H2S
1 C => as
2 D => was
3 B => more comfortable
4 A => lived