Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them?
Q. Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. If 6.4 1016 Ca2+ ions and 6.2 1016 Cl- ions per second move in opposite directions through an imaginary area between the electrodes, what is the current in the solution?
Asked by apriljtr62674 - Mon Feb 2 21:34:03 2009 - - 1 Answers - 0 Comments
Q. Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. If 6.4 1016 Ca2+ ions and 6.2 1016 Cl- ions per second move in opposite directions through an imaginary area between the electrodes, what is the current in the solution?
Asked by apriljtr62674 - Mon Feb 2 21:34:03 2009 - - 1 Answers - 0 Comments
How do you prove that a chemical reaction occured between Calcium Chloride and Sodium Carbonate?
Q. I did an experiment dissolving sodium carbonate and calcium chloride into water, and then mixing them together. There was this milky mixture that seemed to have formed ontop of water. I'm not quite sure how to prove a chemical reaction occured because there is no precipitate, temperature or colour change and there was apparently no gas produced.
Asked by Melody Y - Tue Mar 4 20:45:32 2008 - - 1 Answers - 0 Comments
A. there should be precipitate in the milky mixture since the 2 combine is an ionic precipitation or double decomposition to make solid calcium carbonate and soluble sodium chloride
Answered by Whoby M - Tue Mar 4 20:58:21 2008
Q. I did an experiment dissolving sodium carbonate and calcium chloride into water, and then mixing them together. There was this milky mixture that seemed to have formed ontop of water. I'm not quite sure how to prove a chemical reaction occured because there is no precipitate, temperature or colour change and there was apparently no gas produced.
Asked by Melody Y - Tue Mar 4 20:45:32 2008 - - 1 Answers - 0 Comments
A. there should be precipitate in the milky mixture since the 2 combine is an ionic precipitation or double decomposition to make solid calcium carbonate and soluble sodium chloride
Answered by Whoby M - Tue Mar 4 20:58:21 2008
Dissolution of Calcium Chloride and Sodium Bicarbonate in water, anyone know how to find the equation?
Q. I need the equations of dissolution of calcium chloride and sodium bicarbonate in water please. Sorry forgot to mention, they are two separate reactions
Asked by Vlad M - Tue Jan 16 17:49:48 2007 - - 3 Answers - 0 Comments
A. Are you asking dissociation of CaCl2 in water, seperately from sodium bicarbonate? Or are they in the same solution?
Answered by betatesterwood - Tue Jan 16 18:09:51 2007
Q. I need the equations of dissolution of calcium chloride and sodium bicarbonate in water please. Sorry forgot to mention, they are two separate reactions
Asked by Vlad M - Tue Jan 16 17:49:48 2007 - - 3 Answers - 0 Comments
A. Are you asking dissociation of CaCl2 in water, seperately from sodium bicarbonate? Or are they in the same solution?
Answered by betatesterwood - Tue Jan 16 18:09:51 2007
what is the molecular formula for salt calcium chloride?
Q. Based on the number of electrons in their valence shells and their bonding capacities, what would the molecular formula for this salt calcium chloride? Based on the number of electrons in their valence shells and their bonding capacities, what would be the molecular formula for this salt calcium chloride?
Asked by flapjack - Sun Jul 20 20:08:27 2008 - - 1 Answers - 0 Comments
A. CaCl2.
Answered by Charles F - Sun Jul 20 20:17:38 2008
Q. Based on the number of electrons in their valence shells and their bonding capacities, what would the molecular formula for this salt calcium chloride? Based on the number of electrons in their valence shells and their bonding capacities, what would be the molecular formula for this salt calcium chloride?
Asked by flapjack - Sun Jul 20 20:08:27 2008 - - 1 Answers - 0 Comments
A. CaCl2.
Answered by Charles F - Sun Jul 20 20:17:38 2008
How do i prevent or slowdown HCL from forming when I mix Calcium chloride with water? Please help?
Q. Someone suggested Soda Ash Some say Hydrated Lime I need to preserve the Calcium Chloride sol for at least 8 months.
Asked by sunnyn8888 - Fri Oct 26 18:41:36 2007 - - 2 Answers - 0 Comments
A. CaCl2 is the formula of solid Calciumchloride, mixed with water it dissolves, but will not form HCl. Do you want to rephrase the question?
Answered by klimbim - Fri Oct 26 18:49:44 2007
Q. Someone suggested Soda Ash Some say Hydrated Lime I need to preserve the Calcium Chloride sol for at least 8 months.
Asked by sunnyn8888 - Fri Oct 26 18:41:36 2007 - - 2 Answers - 0 Comments
A. CaCl2 is the formula of solid Calciumchloride, mixed with water it dissolves, but will not form HCl. Do you want to rephrase the question?
Answered by klimbim - Fri Oct 26 18:49:44 2007
How do I get calcium chloride residue off my concrete garage floor? I've washed it down over 15 times!!?
Q. The morons at ODOT decided to add Calcium Chloride to their road salt mix here in NE Ohio over the winter. It has penetrated the pores in my garage floor and won't wash out.This stuff is extremely highly corrosive to steel. it should be banned and OUTLAWED!!! as there are more enviromentally friendly substitutes out there.
Asked by ron a - Wed May 9 00:51:31 2007 - - 2 Answers - 0 Comments
A. Go to your local tile floor covering store ask for acidic ceramic grout cleaner. It comes in a pink can ,its a powder just add water and that should do it. Nother way is go to a pool company and get liquid acid and instead of putting it in the pool clean the floor with it . (Warning)Be careful use gloves and a mask!... Just submit your Estimate fax, e-mail , or if you don't care about others viewing your estimate just go ahead and upload a copy of your estimate. When we receive your estimate, we will analyze your estimate completely and post the results.
Answered by rat831 - Wed May 9 01:00:03 2007
Q. The morons at ODOT decided to add Calcium Chloride to their road salt mix here in NE Ohio over the winter. It has penetrated the pores in my garage floor and won't wash out.This stuff is extremely highly corrosive to steel. it should be banned and OUTLAWED!!! as there are more enviromentally friendly substitutes out there.
Asked by ron a - Wed May 9 00:51:31 2007 - - 2 Answers - 0 Comments
A. Go to your local tile floor covering store ask for acidic ceramic grout cleaner. It comes in a pink can ,its a powder just add water and that should do it. Nother way is go to a pool company and get liquid acid and instead of putting it in the pool clean the floor with it . (Warning)Be careful use gloves and a mask!... Just submit your Estimate fax, e-mail , or if you don't care about others viewing your estimate just go ahead and upload a copy of your estimate. When we receive your estimate, we will analyze your estimate completely and post the results.
Answered by rat831 - Wed May 9 01:00:03 2007
How calculate Calcium chloride and ammonium chromate ?
Q. How calculate Calcium chloride and ammonium chromate? How about Magesium Oxide and iron (III) nitrate?
Asked by mo0ink - Wed Sep 24 21:52:30 2008 - - 2 Answers - 0 Comments
Q. How calculate Calcium chloride and ammonium chromate? How about Magesium Oxide and iron (III) nitrate?
Asked by mo0ink - Wed Sep 24 21:52:30 2008 - - 2 Answers - 0 Comments
Can i use Calcium Chloride to help absorb moisture?
Q. I had a pipe leak in my house. All water has been removed but moisture still remains. i have seen where DampRid has calcium chloride as one of thier ingredients. The water got on my floors and baseboards thats where i need the moisture absorbed from. And table salt is sodium chloride
Asked by brnidgrl - Mon Feb 9 19:44:08 2009 - - 1 Answers - 0 Comments
A. Calcium chloride is table salt. Table Salt corrodes steel pipe and many other metals. Calcium Chloride alone is not a solution to absorbing moisture. DampRid has many other chemicals that work in conjunction with Calcium Chloride. I would NOT put table salt in pipes.
Answered by Caliban - Mon Feb 9 20:36:52 2009
Q. I had a pipe leak in my house. All water has been removed but moisture still remains. i have seen where DampRid has calcium chloride as one of thier ingredients. The water got on my floors and baseboards thats where i need the moisture absorbed from. And table salt is sodium chloride
Asked by brnidgrl - Mon Feb 9 19:44:08 2009 - - 1 Answers - 0 Comments
A. Calcium chloride is table salt. Table Salt corrodes steel pipe and many other metals. Calcium Chloride alone is not a solution to absorbing moisture. DampRid has many other chemicals that work in conjunction with Calcium Chloride. I would NOT put table salt in pipes.
Answered by Caliban - Mon Feb 9 20:36:52 2009
How does calcium chloride remove water vapor from the air inside a container having an airtight seal.?
Q. The calcium chloride uses a desiccator to do this. How does this happen???
Asked by 3dwade3 - Tue Feb 19 18:06:40 2008 - - 1 Answers - 0 Comments
A. Any number of substances can act as a desiccator (water absorber). Even in an airtight container there are minor air currents and over a long enough period of time the water vapor in those currents passes over the desiccator and it takes the water out. The desiccator has more of an affinity for the water than the air.
Answered by Bob - Tue Feb 19 19:20:13 2008
Q. The calcium chloride uses a desiccator to do this. How does this happen???
Asked by 3dwade3 - Tue Feb 19 18:06:40 2008 - - 1 Answers - 0 Comments
A. Any number of substances can act as a desiccator (water absorber). Even in an airtight container there are minor air currents and over a long enough period of time the water vapor in those currents passes over the desiccator and it takes the water out. The desiccator has more of an affinity for the water than the air.
Answered by Bob - Tue Feb 19 19:20:13 2008
Why was calcium chloride used instead of sodium chloride?
Q. In and investigation we dissolved calcium chloride dissolved in ethanol, but why didnt we use sodium chloride since it is less expensive than calcium chloride? thank you!
Asked by Peter - Sun May 10 12:36:57 2009 - - 2 Answers - 0 Comments
A. I am sorry, but this probably is due to the reason for doing the experiment. I think the reason depends on the experiments.
Answered by As Is - Sun May 10 12:47:26 2009
Q. In and investigation we dissolved calcium chloride dissolved in ethanol, but why didnt we use sodium chloride since it is less expensive than calcium chloride? thank you!
Asked by Peter - Sun May 10 12:36:57 2009 - - 2 Answers - 0 Comments
A. I am sorry, but this probably is due to the reason for doing the experiment. I think the reason depends on the experiments.
Answered by As Is - Sun May 10 12:47:26 2009
How does Calcium Chloride Affect the Temperature of water.?
Q. When Calcium Chloride (CaCl2) is added to room temperature water (i.e. 25-30 degrees Celsius) will the temperature of water increase, decrease or stay the same?
Asked by da - Sat Nov 8 20:30:34 2008 - - 2 Answers - 0 Comments
Q. When Calcium Chloride (CaCl2) is added to room temperature water (i.e. 25-30 degrees Celsius) will the temperature of water increase, decrease or stay the same?
Asked by da - Sat Nov 8 20:30:34 2008 - - 2 Answers - 0 Comments
Calculate the boiling point elevation when 2g of calcium chloride is added to a .1kg solution of water?
Q. Water has a normal boiling point of 100 C. Calculate the boiling point elevation of water when 2g of calcium chloride are added to 100g of water. (calcium chloride has a mass of 110.98, water as a boiling point constant of 0.51 C/m)
Asked by Keepsby - Tue Feb 17 16:24:49 2009 - - 1 Answers - 0 Comments
Q. Water has a normal boiling point of 100 C. Calculate the boiling point elevation of water when 2g of calcium chloride are added to 100g of water. (calcium chloride has a mass of 110.98, water as a boiling point constant of 0.51 C/m)
Asked by Keepsby - Tue Feb 17 16:24:49 2009 - - 1 Answers - 0 Comments
Why/how does calcium chloride affect the rate rennet clots milk (cheese making)?
Q. I recently completed an experiment for my AS level coursework and found that increasing the amount of calcium chloride in a rennet (i used fromase) + milk solution resulted in increased clot formation. I have looked all over the internet but couldn't find any explanations. Help would be much appreciated, thanks.
Asked by coolpaulv - Wed Feb 13 07:32:53 2008 - - 1 Answers - 0 Comments
A. Maybe the calcium chloride you used was an acidified one? That might cause it to curdle more!
Answered by gxl - Wed Feb 13 07:49:07 2008
Q. I recently completed an experiment for my AS level coursework and found that increasing the amount of calcium chloride in a rennet (i used fromase) + milk solution resulted in increased clot formation. I have looked all over the internet but couldn't find any explanations. Help would be much appreciated, thanks.
Asked by coolpaulv - Wed Feb 13 07:32:53 2008 - - 1 Answers - 0 Comments
A. Maybe the calcium chloride you used was an acidified one? That might cause it to curdle more!
Answered by gxl - Wed Feb 13 07:49:07 2008
Calcium Chloride in a balloon with water reaction?
Q. ok i have a chemistry project due tomorrow and i am supposed to get a bunch of information on a reaction and make a poster on it. the reaction that my group and i decided on was calcium chloride and water. my teacher told me that you drop the calcium chloride in a balloon, then put water in it and a gas forms, which you can then light on fire. but the thing is, i cant find anything on it on google. i even tried calling my teacher but there was no answer. please help.
Asked by john m - Wed Apr 1 00:59:08 2009 - - 1 Answers - 0 Comments
Q. ok i have a chemistry project due tomorrow and i am supposed to get a bunch of information on a reaction and make a poster on it. the reaction that my group and i decided on was calcium chloride and water. my teacher told me that you drop the calcium chloride in a balloon, then put water in it and a gas forms, which you can then light on fire. but the thing is, i cant find anything on it on google. i even tried calling my teacher but there was no answer. please help.
Asked by john m - Wed Apr 1 00:59:08 2009 - - 1 Answers - 0 Comments
CHEMISTRY: If you have some road salt, how can you tell if it is calcium chloride or sodium chloride?
Q. Explain the results for sodium and potassium when both are present a) with cobalt glass b) without cobalt glass If you have some road salt, how can you tell if it is calcium chloride or sodium chloride?
Asked by dandahamman - Thu Feb 22 20:02:29 2007 - - 1 Answers - 0 Comments
A. Using a standard flame test (putting some of the material into the flame of a bunsen burner), sodium chloride will give a yellow flame. Calcium chloride will give a red flame.
Answered by pendarvisr - Mon Feb 26 20:11:29 2007
Q. Explain the results for sodium and potassium when both are present a) with cobalt glass b) without cobalt glass If you have some road salt, how can you tell if it is calcium chloride or sodium chloride?
Asked by dandahamman - Thu Feb 22 20:02:29 2007 - - 1 Answers - 0 Comments
A. Using a standard flame test (putting some of the material into the flame of a bunsen burner), sodium chloride will give a yellow flame. Calcium chloride will give a red flame.
Answered by pendarvisr - Mon Feb 26 20:11:29 2007
How can I make my calcium chloride anhydrous?
Q. I have recently purchased 7kg of calcium chloide fro a science experiment, but after calculating it's density I found that it is the dihydrate form! I suspect that like with most salts it can be dehydrated with external heat, is this true? Also how much? (just the temperature or if you know it the calories/mole) Also at the moment I do not have access to a suitable vaccuum pump, so that is not an option. Please no links to wiki
Asked by b_d_dom - Thu Feb 8 15:24:20 2007 - - 3 Answers - 0 Comments
A. 130+ C until constant weight should do you fine. If its really the dihydrate, you're going to have lots of water, so make sure your oven is vented.
Answered by mountain crusher - Thu Feb 8 15:29:56 2007
Q. I have recently purchased 7kg of calcium chloide fro a science experiment, but after calculating it's density I found that it is the dihydrate form! I suspect that like with most salts it can be dehydrated with external heat, is this true? Also how much? (just the temperature or if you know it the calories/mole) Also at the moment I do not have access to a suitable vaccuum pump, so that is not an option. Please no links to wiki
Asked by b_d_dom - Thu Feb 8 15:24:20 2007 - - 3 Answers - 0 Comments
A. 130+ C until constant weight should do you fine. If its really the dihydrate, you're going to have lots of water, so make sure your oven is vented.
Answered by mountain crusher - Thu Feb 8 15:29:56 2007
Reaction of Calcium Chloride and Sodium Hydroxide?
Q. What happens when you mix an even amount of CaCl(Calcium Chloride) and NaOH (Sodium Hydroxide) together?
Asked by Beckerous - Fri Mar 21 09:08:05 2008 - - 4 Answers - 0 Comments
A. lol
Answered by bb - Fri Mar 21 09:11:22 2008
Q. What happens when you mix an even amount of CaCl(Calcium Chloride) and NaOH (Sodium Hydroxide) together?
Asked by Beckerous - Fri Mar 21 09:08:05 2008 - - 4 Answers - 0 Comments
A. lol
Answered by bb - Fri Mar 21 09:11:22 2008
how does calcium of chloride lose its chlorine when exposed to air?
Q. how does calcium of chloride lose its chlorine when exposed to air?
Asked by Sujay S - Sat Sep 27 06:00:18 2008 - - 3 Answers - 0 Comments
A. I wasn't aware that it did. My understanding of CaCl2 is that it is quite stable and does not decompose to calcium and chlorine. That would make stockpiles of calcium chloride used for road deicing very dangerous. But since CaCl2 does not spontaneously decompose in air to form chlorine, I think that the snow crews and the general public are safe.
Answered by pisgahchemist - Sat Sep 27 06:48:15 2008
Q. how does calcium of chloride lose its chlorine when exposed to air?
Asked by Sujay S - Sat Sep 27 06:00:18 2008 - - 3 Answers - 0 Comments
A. I wasn't aware that it did. My understanding of CaCl2 is that it is quite stable and does not decompose to calcium and chlorine. That would make stockpiles of calcium chloride used for road deicing very dangerous. But since CaCl2 does not spontaneously decompose in air to form chlorine, I think that the snow crews and the general public are safe.
Answered by pisgahchemist - Sat Sep 27 06:48:15 2008
When solutions of silver nitrate and calcium chloride are mixed, ?
Q. When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation 2AGNO3 (aq) + CaCl2 (aq) ---> 2AgCl (s) + Ca(NO3)2 (aq) a. What mass of silver chloride can be produced from 1.54 L of a 0.237 M solution of silver nitrate? Express your answer in grams. b. The reaction described in Part A required 3.14 L of calcium chloride. What is the concentration of this calcium chloride solution?
Asked by sonia k - Fri Sep 26 13:53:39 2008 - - 2 Answers - 0 Comments
A. Let me preface this by saying that I don't have a calculator near me and I don't care to use the one on my computer. X means multiply, x is a variable. I don't like to use x's when I use X's, so I probably won't, but in case I do. A, B, C, D, etc. will be Variables. ___ .237 (mols / L) X 1.54 L = A mols (This will be how many mols AgNO3 were present) A X ( 2 AgCl / 2 AgNO3) X (143.32 g mol-1) = B (The answer) ___ A X (1 mol CaCl2 / 2 mol AgNO3) = C (CaCl2 # of mol) C / 3.14 L = D (the answer)
Answered by stnicholas6496 - Fri Sep 26 14:08:49 2008
Q. When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation 2AGNO3 (aq) + CaCl2 (aq) ---> 2AgCl (s) + Ca(NO3)2 (aq) a. What mass of silver chloride can be produced from 1.54 L of a 0.237 M solution of silver nitrate? Express your answer in grams. b. The reaction described in Part A required 3.14 L of calcium chloride. What is the concentration of this calcium chloride solution?
Asked by sonia k - Fri Sep 26 13:53:39 2008 - - 2 Answers - 0 Comments
A. Let me preface this by saying that I don't have a calculator near me and I don't care to use the one on my computer. X means multiply, x is a variable. I don't like to use x's when I use X's, so I probably won't, but in case I do. A, B, C, D, etc. will be Variables. ___ .237 (mols / L) X 1.54 L = A mols (This will be how many mols AgNO3 were present) A X ( 2 AgCl / 2 AgNO3) X (143.32 g mol-1) = B (The answer) ___ A X (1 mol CaCl2 / 2 mol AgNO3) = C (CaCl2 # of mol) C / 3.14 L = D (the answer)
Answered by stnicholas6496 - Fri Sep 26 14:08:49 2008
Where can I buy Calcium Chloride (cheesemaking) in the UK?
Q. I've read that Calcium Chloride can help with the cheesemaking process when using homogenized milk. I'm aware you can buy this in a rock salt form for putting on your driveway, but I don't want to use that for cooking. It is possible to buy food safe Calcium Chloride this from a shop in the UK (preferably in Glasgow)? If not, does anyone know a good online supplier?
Asked by Hula H - Mon Mar 2 05:07:34 2009 - - 4 Answers - 0 Comments
A. There's a cheesmaking forum here where someone was asking the same question, and there are several answers which should help:
Answered by Back to the drawing board - Mon Mar 2 05:24:30 2009
Q. I've read that Calcium Chloride can help with the cheesemaking process when using homogenized milk. I'm aware you can buy this in a rock salt form for putting on your driveway, but I don't want to use that for cooking. It is possible to buy food safe Calcium Chloride this from a shop in the UK (preferably in Glasgow)? If not, does anyone know a good online supplier?
Asked by Hula H - Mon Mar 2 05:07:34 2009 - - 4 Answers - 0 Comments
A. There's a cheesmaking forum here where someone was asking the same question, and there are several answers which should help:
Answered by Back to the drawing board - Mon Mar 2 05:24:30 2009
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