October 2018 1 749 Report
Sebanyak 100 ml larutan penyangga mengandung NH3 dan NH4Cl masing-masing 0,1 M
a. tentukan pH larutan
b. tentukan pH larutan itu setelah ditambahkan 1 ml larutan HCl 0,1 M
c. tentukan pH larutan itu setelah ditambahkan 1 ml larutan NaOH 0,1 M
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Complete the text with the suitable words. then, read it in tums a. vomitting b. transit c. disease d. symptoms e. bitten f. immune system g. caused by h. antibiotics i. sever j. a few weeks cat scratch disease is an infection (1) bacteria known as Bartonella henselae. although about 40% of cats carry the bacteria in their saliva at some point in their lives, cats that carry Bartonella henselae do not themselves show any signs of illness. most people contract the disease after being scrathed or (2) by a cat Since these bacteria may also be present on cat fur, it is possible to contract the (3) from petting a cat and then rubbing your eyes. kittens are more likely than older cats to carry the bacteria and to (4) the infection to humans. sometimes people who get cat scratch disease do not recall ever being scratched or bitten by a cat
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Larutan jenuh Mg(OH)2 mempunyai pH = 10,5 . tentukan KSP Mg(OH)2
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Dik : KSP BaSO4 = 1×10^-10 KSP PbSO4 = 2×10^-8 KSP MgSO4 = 1×10^-5 KSP CaSO4 = 3×10^-6 KSP SrSO4 = 3×10^-7 jika kedalam larutan yang mengandung kation Ba^2+, Pb^2+, Mg^2+, dan Ca^2+ ditambahkan larutan Na2SO4. bagaimana urutan pengendapan garam sulfat ?
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Jika 100 ml Ba(OH)2 dengan pH = 13 direaksikan dengan 100 ml HCN 0,1 M. hitunglah pH larutan jika diketahui Ka HCN = 4,9 × 10^-10
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Sebanyak 30 ml suatu larutan amonia tepat bereaksi dengan 20 ml asam sulfat 0,15 M. jika diketahui Kb NH3 = 1×10^-5. tentukan : a. pH larutan amonia semula b. pH larutan setelah perubahan asam sulfat
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Dear diary yeah, today we celebrate our new year. like other new years before, I (1)... with my family and all relatives, we had a big (2)... on new years eve. though I didn't celebrate outside, I found my self really enjoying the night. there are many delicious (3)... prepared by moon and my aunts. there were also some reflections about the past and the new year delivered by my uncle. then I had a (4)... with my cousins. we talked about many things. it seemed we never ran out of (5)... to discuss then, about (6)... we prepared some fireworks. when the clock struck twelve midnight. all the light were (7)... , and we started to light the fireworks in the (8)... it was so beautiful and so bright. my cousins and keep awake until the down. oh, we were so happy that we even didn't feel sleepy anyhow, welcome the new year and we wish you all the best a. chat b. front yard c.midnight d. gathered e. review f. happy g. dinner h. topics i. foods and drinks j. turned off
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Fill in the blanks with the correct words dear diary I love my grandfather. he is a funny and loving person. he always makes us laugh everytimes he tells us some (1)... or stories. he has his own way of delivering the stories which make them sound (2)... this sunday afternoon, while watching TV, my grandfather was looking for his favorite book. you know, he has read the book many times, but he never gets (3)... reading it. he was getting a little bit (4)... When he couldn't find it. he kept blaming my mother for (5)... it. then all the family searched for the book and we found it. guess what, the book was in the (6)... of the TV rack. then with a big smile he said, he forgot that he hed put the book there after reading it this morning. we felt a little bit irritated, but we soon laughed to see his smile. well, such a thing has happened many times. for those who have grown up without the love of their (7)... it is something you can't explain. they spoil you and take your side too, but otherwise, they give you more love than you can imagine to make your life (8)... a. upsed b. thankful c. misplacing d. colorful e. grandparents f. jokes g. miss h. bored i. funny j.drawer
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Tolong ya. ga ngerti soalx
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