C1:Tính và so sánh % Fe trong hai hợp chất

Fe₂O₃ và FeO₃

C2:a)Tính số mol có trong =3,7g Al₂O₃

b)Tính khối lượng của hỗn hợp A gồm

mol MgO và 0,2 mol ZnO

C3:Đốt cháy hết 0,2g Na trong bình khí Oxi

a)Viết PTHH của phần đáy

b)Tính khối lượng của chất sản phẩm

Tìm GTLN , GTNN ủa biểu thức sau :

a)x²-6x+11

b)-x²+6x-1

Identify a mistake in each sencesce and correct it

1.In Australia , you mustn't to comment on a peron's accent .

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2.In my family , children has to get permission before leaving the dinning table .

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3.When I came , the whole family is having dinner around a big dinning table .

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Tet is a national and .................... (1) festival in Vietnam . It is occasion for every Vietnamese to be reunited to think .................(2) their past activities and hope for good luck (3)............ the new year to come.
Before Tet all houses are white washed and ...................... (4) with colorful lights . Everybody is looking ......................... ( 5 ) to a better life. (6)...............the new year’s eve, children are smartly dressed .They are hoping to reiceive money put in small red envelopes as they are wishing longevity to their grandparents and parents. Wrong doings should be absolutely avoided on these days .
1. A. traditional B. modern C. music D.summer
2. A. about B.to C. after D. for
3.A.in B.at C.on D.what
4. A. decorate B. decorating C. decorates D. decorated
5. A. for B. forward C. after D. at
6. A. In B.At C.On D.When