GẤP GẤP GẤP GIÚP EM VS HỨA ĐÁNH GIÁ 5S

Giải nhanh giúp em với ạ giải pt ạ

Phân tử chất A gồm 1 nguyên tử nguyên tố X liên kết với 3 nguyên tử oxi và nặng gấp hơn phân tử khối của khí hiđro là 40 lần. a/ Tính phân tử khối của A. b/ Tính nguyên tử khối của X, cho biết tên, kí hiệu hóa học của nguyên tố X. c/ Viết công thức hóa học của A.

Hòa tan hòa toàn 1,26 gam HNO3 vào nước để được 2 lít dung dịch. Tính pH của dung dịch thu được.

Read the passage, then choose the most suitable words to fill in the blanks Thanh Ha, a ___________(43) porcelain and pottery village with ___ ______(44) of seven centuries, is an interesting attraction in Hoi An that tourists should not ignore. Located in an area rich in _________(45), the village has advantage of ingredients to create fine ceramics. Moreover, lying beside the Han River, one of the most ________(46) trade centers in the center of Viet Nam during the 15th -17th centuries. Thanh Ha's ceramics were favourite __________(47) not only in the domestic market, but also foreign ones thanks to Japanese, Chinese and Western trading boats that passed by. 43. A. modern B. traditional C. interesting D. old 44. A. history B. historical C. historic D. historically 45. A. wood B. ground C. clay D. water 46. A. modern B. international C. famous D. ancient 47. A. things B. products C. works D. sculptures

WRITE A PARAGRAPH ABOUT HOW PEOPLE IN YOUR FAMILY SHARE THE HOUSEHOLD CHORES. (100-120 words) * Mọi người ơi giúp em với !

Glixerol là chất được pha thêm vào cồn để làm nước rửa tay sát khuẩn, giúp cho da tay không bị khô. Glixerol được tạo bởi cacbon, hidro và oxi với % khối lượng tương ứng là 39,13%%, 8,7%, còn lại là oxi. Tìm công thức chất này biết phân tử chất này nặng gấp 2 lần phân tử khí NO2.

Giải hộ em với ạ em đang cần gấp

Rewrite the following sentences so that they have the same meaning. 33. After finishing the Vietnamese course, Nick will visit some craft villages. A. Nick will visit some craft villages while he finishes the Vietnamese course. B. Nick will visit some craft villages even though he finishes the Vietnamese course. C. Nick will visit some craft villages after he finishes the Vietnamese course. D. Nick will visit some craft villages because he finishes the Vietnamese course. 34. Though the water is very cold in January, we go swimming anyway. A. When the water is very cold in January, we go swimming anyway. B. As the water is very cold in January, we go swimming anyway. C. The water is very cold in January if we go swimming anyway. D. Although the water is very cold in January, we go swimming anyway. 35. She studied hard for the exam in order that she could have good marks. A. She studied hard for the exam though she could have good marks. B. She studied hard for the exam unless she could have good marks. C. She studied hard for the exam if she could have good marks. D. She studied hard for the exam so that she could have good marks. Combine two following sentences into one. 36. The water was very cold. The lifeguards made all of the swimmers leave the water. A. Since the water was very cold, the lifeguards made all of the swimmers leave the water. B. The water was very cold although the lifeguards made all of the swimmers leave the water. C. The water was very cold because the lifeguards made all of the swimmers leave D. The lifeguards made all of the swimmers leave the water though the water was very cold. 37. You get out of bed late. You will miss the bus A. Get up late, or you will miss the bus. B. Unless you get up soon, you will miss the bus. C. Even though you get up late, you will miss the bus. D. Despite getting up late, you will miss the bus. 38. Sinh paintings are special because they are burned after worship. A. Sinh paintings are special so that they are burned after worship. B. Sinh paintings are special since they are burned after worship. C. Sinh paintings are special because of they are burned after worship. D. Sinh paintings are special, so they are burned after worship. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions 39. The water is very cold in January. We go swimming anyway. A. When the water is very cold in January, we go swimming anyway. B. As the water is very cold in January, we go swimming anyway. C. The water is very cold in January if we go swimming anyway. D. Although the water is very cold in January, we go swimming anyway. 40. We have to follow more than ten stages. We can make a simple conical hat. A. We have to follow more than ten stages because we can make a simple conical hat. B. We have to follow more than ten stages so that we can make a simple conical hat. C. We have to follow more than ten stages although we can make a simple conical hat. D. We have to follow more than ten stages in order to we can make a simple conical hat. 41. In spite of his hard work, he could not finish the job. A. As hard as he work B. Despite he worked hard C. Though he worked hard D. Although hard work 42. Although he is very old, he can walk to the station. A. In spite of his old age B. Despite his old age C. Despite the fact that he is old D. All are correct

a/ Tại sao khi đun bếp than, ta phải mở cửa lò? Muốn than không cháy nữa, ta phải làm gì? Giải thích. b/ Tại sao chai rượu sau khi mở nắp, rượu rất nhanh bị chua? Làm thế nào để làm chậm quá trình này?