Sục từ từ 0,036 lít hỗn hợp khí X gồm metan và axetilen vào 400 ml dd brom x/mol Thìn dung dịch brom mất màu vàng vào thoát ra 0,224 lít khí Y. Viết ptpu vào tính X

Fill in the gaps with the right forms of the verbs in brackets to complete the following English sentences in Present Tenses: Simple, Continuous or Perfect. 124. I ________________ of buying a new car. My old one always keeps breaking down. (BUY) 125. What ________________ at ? - The sky. - It ________________ as if it's going to rain. (YOU LOOK, LOOK) 126. I usually ________________ parties but I ________________ this one. Everything is so boring (ENJOY, NOT ENJOY) 127. That famous opera singer ________________ at City Hall tonight (PERFORM). 128. Jim is a sensible person , but in this case he ________________ foolishly (BEHAVE). 129. He ________________ a shower at the moment . You can't disturb him (HAVE) 130. My parents ________________ from Spain. Where ________________ from ? (COME, YOUR PARENTS COME) 131. Tony So, tell me. Why is it important to save the rainforests? Leila There are many reasons. One is that a number of plants which could be useful________________ (GROW) in the rainforest. We don't know all the plants yet - there are thousands and thousands of them. Researchers ________________ (TRY) to discover their secrets before they are destroyed. Tony I see. What other reasons are there? Leila Well, I'm sure you heard of global warming. Tony You mean the idea that the world________________ (GET) warmer? Leila That's right. The rainforests ________________ (HAVE) an important effect on the earth's climate. They ________________ (DISAPPEAR) at a terrifying rate and soon they will be gone. People ________________ (NOT DO) enough to save them. Tony But is global warming really such a problem ? I ________________ (ENJOY) warm sunshine. Leila Well, what ________________ (HAPPEN) when you ________________ (HEAT) ice? Tony It ________________melts (MELT) of course. Leila OK. the polar ice caps ________________ (CONSIST) of millions of tons of ice. If they ________________ (MELT), the level of the sea will rise and cause terrible floods. Many scientists ________________ (BELIEVE) that temperatures ________________ (ALREADY RISE). We must do everything we can to prevent global warming, and that ________________ (INCLUDE) preserving the rainforests! Tony Thank you, Leila and good luck for your campaign.

Thổi rất chậm 2,24 lít (đktc) một hỗn hợp khí gồm CO và H2 qua một ống sứ đựng hỗn hợp Al O2 3 , CuO , 3 4 Fe O , 2 3 Fe O có khối lượng là 24 gam dư đang được đun nóng. Tính khối lượng chất rắn còn lại trong ống sứ sau khi phản ứng xảy ra.

Fill in the gaps with the right forms of the verbs in brackets to complete the following English sentences in Present Tenses: Simple, Continuous or Perfect. 92. I ________________ to Radio City. (be) 93. I think the director ________________ the town. (leave) 94. I ________________ my office. (paint) 95. We ________________ her since she arrived to our city. (know) 96. I ________________ your name. (forget) 97. He ________________ the door. (close) 98. He ________________ it since we left him. (do) 99. I ________________ him my last penny. (give) 100. This order ________________ to many misunderstandings. (lead) 101. He ________________ his name on my book. (write) 102. She ________________ a new umbrella. (buy) 103. He ________________ my exercise over and over. (look) 104. I ________________ those books very cheaply. (buy) 105. He ________________ for two months. (work) 106. She ________________ a new job. (find) 107. He ________________ very well. (speak) 108. The children ________________ the whole pudding. (eat) 109. You ________________ many detective stories. (read) 110. Our team ________________ the first prize. (win) 111. My little daughter ________________ her finger with a knife. (cut) 112. I ________________ (watch) seven films this week! 113. Julie ________________ (be) at the office since 6am. 114. The writer ________________ (deserve) this award for a long time. 115. Anne ________________ all her clothes. At the moment she ________________ a dress for herself. (make, make) 116. What’s that smell? Something ________________ in the kitchen. (burn) 117. I hate living in Seattle because it always ________________ there (RAIN). 118. I am sorry I can't hear what you ________________ because everyone ________________ so loudly (SAY, TALK) 119. Jack ________________ about his adventures in Tibet (CURRENTLY WRITE) 120. ________________ to come over for dinner tonight ? (YOU WANT) 121. The delicious chocolate is ________________ by a firm in Switzerland (MAKE) 122. Look, I ________________ two tickets for the circus (HAVE) 123. Look, I ________________ two tickets for the circus (HOLD)

Câu 1: Cho phân thức $\frac{2x-4}{x^{4}-2x }$ a) Tìm điều kiện của x để giá trị phân thức được xác định b) Rút gọn rồi tính giá trị của phân thức tại x = 2012

Fill in the gaps with the right forms of the verbs in brackets to complete the following English sentences in Present Tenses: Simple, Continuous or Perfect. 56. He ________________ (see) the film 'The King's Speech' about six times. 57. We ________________ (paint) our living room. I think it looks a lot better. 58. She ________________ (take) French lessons lately. 59. It ________________ (not/rain) for three hours! Only about one hour. 60. Lucy ________________ (leave) . 61. How many times ________________ (you/visit) Scotland? 62. I ________________ (call) John for hours and hours and he hasn't answered. I'm really angry with him! 63. I ________________ (be) in London for three years. 64. We ________________ (know) James for ages. 65. It's really smelly in here. ________________ (somebody/smoke)? 66. How much petrol ________________ (she/buy)? 67. She ________________ (eat) chocolate all morning, so she feels sick. 68. I ________________ (paint) my house all day, but it's not finished yet. 69. ________________ (you/buy) your train ticket yet? 70. The kitchen is a complete mess! What ________________ (the children/do)? 71. Julie ________________ (learn) to drive for six years! 72. Amanda ________________ (already/have) lunch, so she'll meet us later. 73. How much coffee ________________ (she/drink) this morning? 74. Simon ________________ (write) three books. 75. I ________________ (do) everything I needed to do today! Hurray! 76. It ________________ (not/rain) all summer, so the garden is dead. 77. I ________________ (read) your book. Here it is, thank you. 78. She ________________ (forget) how to get to my house. 79. I ________________ (work) in the garden all day and I need a rest. 80. David feels great these days. He ________________ (get) up early lately. 81. We ________________ (always/hate) rush hour traffic. 82. Recently, I ________________ (study) a lot. My exams are in a few weeks. 83. We ________________ (write) this book for months and months. 84. I ________________ (always/love) chocolate. 85. I ________________ (want) to go back to university for a long time. 86. What's that delicious smell? ________________ (you/cook)? 87. They ________________ London this month. (leave) 88. He ________________ a lot of English papers. (bring) 89. She ________________ me about it. (tell) 90. I ________________ a long letter from father this week. (get) 91. She (just) ________________ ; she will speak to you in a minute. (come)

Anime hoặc chibi Slot cho ai đs nãy hứa Chậm ráng chịu # Ni mơn trc

ý nghĩa Châu thổ , chi lưa, chiếu đồ, bócvc mòn, đối lưa m, thạch nhũ. lm hết đi

cho tam giác ABC cân tại A, góc A = 30 độ, BC = 2cm. Trên AC lấy D sao cho góc CBD = 60 độ. Tính độ dài AD

Giúp mình với ạ ,mình cần gấp Mình cảm ơn nhiều ạ.