Vì đó là con cua đã bị luộc chín 

94667890 tick nha bay lau nay chang ai tick cho ca

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Dùng từ gợi ý viết thành câu hoàn chỉnh

-what, she, buy, supermarket,last,week?

What did she buy in the supermarket last week?

-why, be ,you ,absent, yesterday?

Why were you absent yesterday?

-they, see, old people, hue, every day

They see old people in Hue every day

-Hung, not go ,Tra Vinh , now

Hung is not going to Tra Vinh now

Số hạng thứ 1000 của dãy là:

1 + 3(1000 - 1) = 2998

Đ/S:...

Dùng từ gợi ý viết thành câu hoàn chỉnh

-what, she, buy, supermarket,last,week?

What did she buy in the supermarket last week?

-why, be ,you ,absent, yesterday?

Why were you absent yesterday?

-they, see, old people, hue, every day

They see old people hue every day

-Hung, not go ,Tra Vinh , now

Hung is not going to Tra Vinh now

Chia V

1. He ........will be working.......(work)on the report at this time tomorrow

2. The browns.........will be doing......(do)their house work when you ........come.......(come) next sunday

3. At this time tomorrow, we .......will be driving..........(drive)through london

-Di chuyền,chiều cao, cân nặng, tuổi,...

3X+4nHNO3=3X(NO3)n+nNo+2H2O

10X+12nHNO3=10X(NO3)n+nN2+6nH2o

goi nNO =x,nN2=y

nkhi=5,6:22,4=0,25mol

=>x+y=0,25 *

ta co m khi =30x+28y=7,2**

tu *va **.

=>x=0,1 ,y=0,15

theo pt 1 nHNO3=4nNo=0,4mol

theo pt 2 nHNO3=12nN2=1,8 mol

ta co nHno3=5.0,5=2,5 mol

vi 0,4+1,8<2,5 => Hno3 du X tg het

theo pt 1 nX=0,3/n

theo pt 2 nX=1,5/n

=>nX=1,8/n

=> 1.8/n.MX=16,2

=>X=9n

thu 1<=n<=3

=>X :Al