yhsrv.com
客户中心 - YHSRV.LLC
自动登录 • 忘记密码/密码找回. 近期，部分客户反访问映http:/ cp.yhsrv.com:5353 或者 http:/ 101.1.5.24:5353 速度比较慢为了解决问题，我们接入了百度加速乐，现在将http:/ cp.yhsrv.com:5353 或者 http:/ 101.1.5.24:5353 统一修改为http:/ cp.yhsrv.com请各位亲用http:/ cp.yhsrv.com . 查看全部 ».
yhss-3e5-chemistry-01-2011.blogspot.com
CHEMISTRY
One day on the Tonight Show, Jay Leno showed a classified add that read: "Do you have mole problems? If so, call Avogadro at 602-1023.". Ysabelle Torres (01) 3e5'11. My current worst subject is Chemistry :P. Please comment on my posts (constructive criticisms. Personal blog: http:/ www.pirouettesoncloudnine.blogspot.com. Thursday, 22 September 2011. EXCESS ZINC CARBONATE IS ADDED TO HYDROCHLORIC ACID IN THE PREPARRATION OF ZINC CHLORIDE SALT. I) Write an ionic equation for this reaction. ZnCl (aq) H 2.
yhss-3e5-chemistry-03-2011.blogspot.com
Chemistry^^
Saturday, September 24, 2011. Q5 Excess zinc carbonate is added to hydrochloric acid in the preparation of zinc chloride salt. I) Write an ionic equation for the reaction. ZnCO3 (s) 2H (aq) - Zn 2 (aq) H2O (l) CO2 (g). Ii) Why excess zinc carbonate is used? Is to ensure that all the hydrochloric acid is completely reacted, before filtering the excess unreacted zinc carbonate from the zinc chloride solution. Iii) Briefly explain how the zinc chloride crystals can be obtained. Wwwsmile .blogspot.com. The g...
yhss-3e5-chemistry-037-2011.blogspot.com
Chemistry 2011
PS If You came to my blog out of boredom feel free to feed the fish at the bottom of the blog.Just click on the water. Thursday, 22 September 2011. Q5 Excess zinc carbonate is added to hydrochloric acid in the preparation of zinc chloride salt. (i) Write an ionic equation for the reaction. (ii) Why excess zinc carbonate is used? Iii) Briefly explain how the zinc chloride crystals can be obtained. I) Normal Equation: ZnCO 3. Aq) - - Zn ². O (L) CO 2. Ionic Equation: ZnCO 3. Aq) - - Zn ². O (L) CO 2. Q3 An...
yhss-3e5-chemistry-04-2011.blogspot.com
Chemistry
Monday, September 19, 2011. 7:39 AM / 0 comments. Q1 Zinc nitrate reacts with aqueous ammonia (NH. OH) to form a salt and a base. I) Name the salt and the base. Ans: The salt is Ammonium Nitrate (. And the base is Zinc Hydroxide . Ii) Describe the observations for the reaction. Ans: White ppt. is formed. Iii) Write a chemical equation for the reaction (include state symbols). Iv) Write an ionic equation for the reaction. Q2 Ammonium sulfate is heated with sodium hydroxide. Describe a test for the gas.
yhss-3e5-chemistry-05-2011.blogspot.com
...Relaxing ...
X Chua Shin Yoong. X Somewhere in Bukit Batok. St Anthony's Primary School. X Yuhua Secondary School. X Three Express Five. X Eighteen of May, Nineteen ninety six. X Taurus and Rat. X From a family of five. X Oldest sister with two younger sisters (age 12 and 10). X Learning about new things. X Getting storybook confiscated. 05 Shin Yoong (me! This blogskin is made by SI. And the pictures is taken from here. And lastly, part of the coding is from this skin. Saturday, September 17, 2011 Y. OH (aq) = 2NH 4.
yhss-3e5-chemistry-06-2011.blogspot.com
A World of Chemistry
A World of Chemistry. Friday, 23 September 2011. Q5 Excess zinc carbonate is added to hydrochloric acid in the preparation of zinc chloride salt. Ii) Excess Zinc carbonate. Is used to make sure that all the hydrochloric acid are. Fliter out the excess zinc carbonate. From the solution and the zinc chloride. Solution will be left.Zince chloride crystals can be obtained by. And allow the sartuated zinc chloride solution to. Crystals of zinc chloride. Labels: excess solid method. I) Potassium sulfate is a.
yhss-3e5-chemistry-07-2011.blogspot.com
Land of Chemistry.
Thursday, September 22, 2011. Question 5. (:. Excess Zinc Carbonate is added to hydrochloric acid in the preparation of Zinc Chloride salt. I) Write an ionic equation for the reaction. Ii) Why excess zinc carbonate is used? Iii) Briefly explain how the zinc chloride crystals can be obtained. Ii) It is to ensure that zinc carbonate has reacted with the sulfuric acid completely, before filtering the excess unreacted zinc carbonate from the zinc chloride solution. Posted by ♥. Question 4. (:. Iii) The possi...
yhss-3e5-chemistry-08-2011.blogspot.com
Chemistry
Friday, September 23, 2011. Q1 Zinc nitrate reacts with aqueous ammonia (NH4OH) to form a salt and a base. I) Name the salt and the base. Ii) Describe the observations for the reaction. A white precipitate forms when Zinc Nitrate solution is added to aqueous Ammonia solution. Iii) Write a chemical equation for the reaction (include state symbols). OH (aq) - ZnOH (s ) NH 4. Iv) Write an ionic equation for the reaction. Iv) Zn 2 (aq) 2OH - (aq) - Zn(OH)2 (s). Aq) 2NaOH (aq) - Na 2. O (l) 2NH 3. Q5 Excess z...
yhss-3e5-chemistry-09-2011.blogspot.com
chem!
Tuesday, 20 September 2011. Q1 Zinc nitrate reacts with aqueous ammonia (NH4OH) to form a salt and a base. I) Name the salt and the base. The salt is Zinc hydroxide, Zn(OH) 2. The base is ammonium nitrate, NH 4. Ii) Describe the observations for the reaction. White precipitate is formed. Iii) Write a chemical equation for the reaction (include state symbols). OH(aq) - Zn(OH) 2. Iv) Write an ionic equation for the reaction. (aq). Aq) - Zn(OH) 2. Q2 Ammonium sulfate is heated. Aq) 2NaOH(aq) - Na 2. To ensu...
yhss-3e5-chemistry-10-2011.blogspot.com
Chemistryy!
Kho Ziqing, (10). Yuhua Secondary School, 3e5. Concert Band, Clarinet (:. 3rd Oct, Libra :. Friday, September 23, 2011 ( 7:43 AM ). Zinc nitrate reacts with aqueous ammonia (NH 4. OH) to form a salt and a base. I) Name the salt and the base. The salt is Ammonium nitrate and the base is Zinc hydroxide. Ii) Desribe the observation for the reaction. When zinc nitrate reacts with the aqueous ammonia, white precipitate is form and it is soluble in excess to give a colourless solution. OH (aq) - Zn(OH). Excess...
