Hỗn hợp X gồm FeO, Fe₂O₃ và Fe₃O₄. Hòa tan 31,2 gam hỗn hợp X vào dung dịch HCl dư thu được dung dịch Y. Trong Y có 12,7 gam FeCl₂ và m gam FeCl₃ Giá trị của m là:

A. 46,75 gam

B. 47,75 gam

C. 48,75 gam

D. 49,75 gam

Nghề nào không phải là nghề thủ công cổ truyền của nước Đại Việt?

A. Nghề đúc đồng

B. Nghề rèn sắt

C. Nghề làm đồ gốm, ươm tơ, dệt lụa

D. Nghề khắc in bản gỗ, làm đường trắng, làm đồng hồ

\(\frac{77}{91}\) 100 %

Among my friends, I cherish the most is Ha.She is a good student of my class, she
lived with her
parents in a small house near my house. She has long black hair, oval face
and eyes speak. What particula
rly struck me about her was the smile. She looks so cute
when he smiles. She is a form of friends that I can share everything. She always believed
and helped me in every situation. She is friendly, gentle and endearing all friends. She
likes Literacy, read
ing, listening to music and go under heaven mua.Chung I have a lot in
common with each other, has become good friends over the past 5 years. Although time
has passed long in any case, I'm and Ha also trying to keep this friendship

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C