1.cho 4,48 lít hidro (đktc) chyas trong 9,6g oxi. tính khối lượng H2O tạo thành ( cho biết chất dư, chất hết ) 2. dùng 13g kẽm tác dụng với Axitclohir

1.cho 4,48 lít hidro (đktc) chyas trong 9,6g oxi. tính khối lượng H2O tạo thành ( cho biết chất dư, chất hết ) 2. dùng 13g kẽm tác dụng với Axitclohiric dư. viết PTHH và tính: a) thể tích khí hidro thoát ra ( đktc ) b) lượng nước thu được khi đốt cháy hết … Đọc tiếp

• For each space, choose ONE word which you think best completes the sentence. Look carefully at the words both before and after each space. ║ The re

• For each space, choose ONE word which you think best completes the sentence. Look carefully at the words both before and after each space. ║ The red panda in the name is not (1) ______ related to the giant panda, but genuinely closer to the raccoon family. It adores (2) ______ bamboo but won’t … Đọc tiếp

III. Correct a mistake 1. We are going to visit our grandparents when we will finish our final exams. 2. Medical students have to study all the theory

III. Correct a mistake 1. We are going to visit our grandparents when we will finish our final exams. 2. Medical students have to study all the theory and practice of medicine. 3. Many animals are totally colorblind, and the condition is rare in humans. 4. Fastly as she drove, she could not catch up … Đọc tiếp