giải giúp mình với ạ mình cần gấp lắm ạ cảm ơn nhìu

dot chay 1,6g chat M can 6,4g khi oxiva thu dc khi CO2 va hoi nc theo ti le mCO2 : mH2O = 11: 9 tinh khoi luong cua CO2 va H2O sinh ra ?

Giúp mình với!!!! Mình cần gấp😅😅😅

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. A ___________ is an enormous system of stars in outer space. A: galaxy B: universe C: solar system D: comet

Theo em kinh nghiệm của ông cha ta đúc rút qua các câu tục ngữ có còn giá trị trong thời đại ngày nay ko,hãy viết một đoạn văn nghị luận từ 7_10 câu về vấn đề trên

Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. She had learned English for five years and then she went to London. A: Before she had went to London, she learned English for five years. B: She had learned English for five years before she went to London. C: She had learned English for five years after she went to London. D: She learned English for five years before she went to London.

Giải hộ mình gấp bài 3 và 4 với ạ

Trong nước tiểu đầu của người bình thường không chứa thành phần nào sau đây? A: Nước. B: Prôtêin. C: Axit uric. D: Các ion thừa như H+, K+.

Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. When the USA put the first human on the moon, Russia had already sent the first human into space. A: Before the USA had put the first human on the moon, Russia had already sent the first human into space. B: The USA put the first human on the moon before Russia had already sent the first human into space. C: After the USA put the first human on the moon, Russia had already sent the first human into space. D: Before the USA put the first human on the moon, Russia had already sent the first human into space.

Tìm số nguyên n để phân số sau cũng là số nguyên: -13/n - 2