Người ta hoà tan 40 gam muối vào nước được dung dịch có nồng độ 20 %. a/ Tính khối lượng muối thu được. b/ Tính khối lượng nước cần dùng sự pha chế.

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III. Mỗi câu sau có ít nhất một lỗi sai. Gạch dưới lỗi sai và viết lại toàn bộ câu đúng (1.0 điểm) 0. He don’t like coffee. He doesn’t like coffee. 1. We live in 50 Le Hong Phong street. ............................................................................................. 2. Would you like go to the cinema tonight? ............................................................................................. 3. I’m the younger person in my family. ............................................................................................. 4. She’s my friend. She’s from French. ............................................................................................. 5. How height is the Petronas Twin Towers?.............................................................................................. 6. In the free time, Hoa often listens to music, goes fishing and play video games. .................................................................................................................................... 7. A: How many homework does he have? B: He has a lot of homework. .................................................................................................................................... 8. How long does Mr Ba travel to work? _ He travels to work by car. .................................................................................................................................... em cần gấp ạ !!!!!