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BÀI TẬP TRẮC NGHIỆM HÓA ĐẠI CƯƠNG VÀ VÔ CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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www.tuhoc.edu.vn<br />

Cách 2:<br />

Theo bài ra ta có: 56x + 16y = 11,36 (1)<br />

Fe 0 – 3e Fe +3<br />

x 3x (mol)<br />

N +5 + 3e N +2<br />

0,18 0,06 (mol)<br />

O 0 + 2e O –2<br />

y 2y (mol)<br />

n n 0,16 (mol).<br />

Fe(NO 3 ) 3<br />

Fe (ban ®Çu)<br />

38,72 (gam).<br />

E<br />

Fe 2 O 3 3<br />

4,<br />

(A) 28,0. (B) 56,0. (C) 11,2. (D) 22,4.<br />

F<br />

3 (dư),<br />

(A) 2,52. (B) 2,22. (C) 2,62. (D) 2,32.<br />

G 2O 3 , CuO, ZnO, MgO, Al 2 O 3<br />

2 i gian thu đư c 1,08 gam nư<br />

3 loãng dư thu đư<br />

đktc là s<br />

(A) 0,448 lít.<br />

(B) 0,672 lít.<br />

(C) 0,896 lít.<br />

(D) 1,12 lít.<br />

H<br />

HNO 3 loãng đư<br />

(A) 45,3 gam.<br />

(C) 76,3 gam.<br />

ng oxi thu đư<br />

t lư<br />

(B) 39,1 gam.<br />

(D) 88,7 gam.<br />

htttp://tuhoc.edu.vn/blog<br />

7<br />

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