$nKClO3=\frac{0,06.10^{23}}{6.10^{23}}=0,01mol$
$pthh :$
$2KClO3→2KCl+3O_{2}$
$theo$ $pt :$
$nKCl=nKClO3=0,01mol$
$⇒mKCl=0,01.74,5=0,745g$
$nO2=3/2.nKClO3=3/2.0,01=0,015mol$
$⇒V_{O_{2}}=0,015.22,4=0,336l$
hãy chứng minh tính đúng đắn của câu tục ngữ '' có chí thì nên''
các thiên tài ơi giúp vs tẹo nộp r lẹ nha
Tìm và chép lại một số bài ca dao nói về tình cảm gia đình
21. ________ you were all sitting at your desks working hard last week, we were sitting on the plane bound for Hawaii. A. Despite B. Although C. While D. Whenever 22. Doctor’s salaries have risen substantially ________ nurses’ pay has actually fallen. A. however B. since C. despite D. whereas 23. He refused to give up work, _______ he’s won a million pounds. A. despite B. however C. even though D. as though 24. ________ he had no money for a bus, he had to walk all the way home. A. Although B. Because C. While D. When 25. ________ an accident in the High Street, traffic is moving very slowly on the London Road. A. Despite B. Because C. Since D. Because of 26. ________ the wet weather, the football match went ahead. A. Although B. Owing to C. But for D. In spite of 27. ________ the rise in unemployment, people still seem to be spending more. A. Nevertheless B. Due to C. Despite D. Although 28. I’d like to go to Thailand, ________ it’s by no means the only country in the world I want to see. A. as B. while C. yet D. since 29. There’s no danger in using this machinery ________ you adhere the safety regulations. A. because B. in case C. although D. as long as 30. She didn’t feel well, but ____________ this she went to work. A. although B. because C. because of D. in spite of 31. He managed to win the race __________ hurting his foot before the race. A. although B. because of C. despite of D. in spite of 32. Some snakes are poisonous, ________ others are harmless. A. so B. for C. but D. despite 33. The player was ejected because he committed a foul. A. as B. due to C. despite D. provided 34. _______ some German and British management styles are similar, there are many differences between them. A. In spite B. In spite of C. Despite the fact that D. Despite 35. I could not eat _______ I was very hungry. A. even though B. in spite C. despite D. in spite the fact that 36. In spite _______, the baseball game was not cancelled. A. the rain B. of the rain C. it was raining D. there was a rain 37. _______ he had enough money, he refused to buy a new car. A. In spite B. In spite of C. Despite D. Although 38. _______, he walked to the station. A. Despite being tired B. Although to be tired C. In spite being tired D. Despite tired 39. The children slept well, despite _______. A. it was noise B. the noise C. of the noise D. noisy 40. _______ her lack of hard work, she was promoted. A. In spite B. Even though C. In spite of D. Despite of
-5x + 6 = - ( 3x - 7) + 29 giúp e với
Giúp mình vài câu nhé mình hứa cho 5 sao
Giải thích các thành ngữ sau: Khôn nhà dại chợ, chân trong chân ngoài, giận cá chém thớt, giật gấu vá vai, trăm voi không được bát nước xáo, chuột sa chĩnh gạo, mẹ tròn con vuông, ném đá giấu tay, già néo đứt dây, quyền rơm vạ đá, lên thác xuống ghềnh, rán sành ra mỡ., giúp tận tâm toy nha QAQ đừng trl linh tinh, trl hết nha QAQ
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