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August 25, 2016

Search: a mixture of potassium chloride and potassium bromide weighing 3.595 g

Number of results: 7,914

pharmacy math
15g of potassium chloride is diluted in 2L of sterile water for injection. What is the final perccent strength (w/v)? ____
July 30, 2012 by Jean

Pharmacy Math
15g of potassium chloride is diluted in 2L of sterile water for injection. What is the final perccent strength (w/v)? ____
July 30, 2012 by Betty

pharmacy math
15 grams of potassium chloride is diluted in 2 liters of sterile water for injection what is the final percentage strength
September 5, 2014 by tammy green

Science
A chemistry teacher needs to prepare 750 ml of a 2.5M solution of Potassium iodide for a lab. How many grams of potassium iodide will be needed to make the solution?
April 8, 2016 by Ane

Chem
Which of the following pairs of elements are likely to form an ionic compound? lithium and chlorine sodium and potassium phosphorus and chlorine sodium and nitrogen argon and potassium
October 7, 2010 by Jennifer

chemistry
The imaginary compound calcium nortonate, CaNtO4, is 54.698% nortonium, Nt, by weight. Calculate the percent, by weight, of potassium in potassium nortonate to four significant digits.
October 6, 2012 by 098123

biology
why does The sodium-potassium pump move potassium ions into and sodium ions out of a cell down a protein canal?
June 6, 2012 by sara

Chemistry
Determine the moles of Potassium Iodate present in a 0.267 m Potassium Iodate solution assuming you have 1 kg of solvent (H2O) present.
February 1, 2015 by Jenna

chemistry
I saw a girl by the name of Abgail ask the same question !! So I'll ask you again!! help me and also her!! What is the chemical equation for: 1. Cyclohexane and Potassium Manganate VII 2. Cyclohexen and Potassium Manganate VII
May 18, 2010 by De Diva

Chemistry
How do you figure out how mch oxygen gas escaped when Potassium Chlorate is decomposed in a reation? Also what mass of Potassium Chlorate was decomposed in the experiment? I conducted the experiement but don't know how to do this.
September 3, 2012 by Becca

Chemistry
I have to decide whether these replacement reactions can happen. 1. K + NaNO3 What do you do when there are multiple elements? None of them are higher up on the activity table than potassium anyway, but in the event that one would be, would that overpower the others lower than...
May 31, 2009 by Narasaq

Health
This is not homework but couldn't find this I wan tot know if you can take to much potassium gluconate? I once had to wait on one of my surgery's because my potassium was to low and know the risk of that but can you take to much and what will happen if you do?
October 11, 2008 by lois

Chemistry 20
Determine the amount concentration of potassium ions and dichromate ions in a solution made by dissolving 44.7 g of potassium dichromate to make a volume of 205 mL. Include the balanced chemical equation.
November 15, 2010 by Anonymous

chemistry please help
Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol 2nd electron affinity ...
April 17, 2011 by Joanie

CHEM please!!! help
Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol 2nd electron affinity...
April 19, 2011 by Joanie

science
Potassium iodide is prepared by the reaction of hydroiodic acid and potassium hydrogen carbonate. water and carbon dioxide are also produced. in the reaction of 398 g HI and 318 g KHCO3, how many grams of KI are produced?
January 4, 2010 by A.

chemistry
Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.
June 23, 2012 by mary

chemistry
For potassium metal, the heat of fusion is 2.33KJ/mol, and the entropy of fusion is 6.93 J/mol-K. At what temperature does potassium melt?
March 7, 2010 by julie

Chemistry
What minimum frequency of light is required to ionize potassium?The energy required to ionize potassium is 419kJ/mol?
September 18, 2010 by Ashley

science
Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe the answer is d and f
September 18, 2011 by jake

earth space science
Potassium-40 has a half-life of approximately 1.25 billion years. Approximately how many years will pass before a sample of potassium-40 contains one-sixteenth the original amount of parent isotope?
February 9, 2012 by Potassium-40 has a half-life of approximately 1.25

Chemistry Urgent please help! Test tomorrow
if you have a mixture of sodium chloride and sodium bromide, could you use its conductance to determine the concentration of each solution? explain
January 9, 2013 by Anonymous

Chemistry
The values of Ksp for silver bromide, AgBr is 7.7x10^-13, and silver chloride, AgCl is 1.6x10^-10. A solution containing a mixture of 2.0x10^-2 M Br^- and 2.0x10^-2 M Cl^- is a candidate for separation using selective precipitation. Solid AgNO3 is added without changing the ...
July 27, 2010 by Sam

Chemistry
How can I rank these substrates from fastest to slowest reacting? In an SN2 reaction with NaI-Acetone? Based on theory alone? benzyl chloride n-butyl bromide n-butyl chloride sec-butyl chloride tert-butyl chloride
November 26, 2012 by helllp

Chemistry
Calcium carbonate decomposes on heating producing potassium nitrate and oxygen. Write a balanced equation for this reaction. Heating 100g of pure potasium nitrae what mass of potassium nitrate would be produced?
March 21, 2012 by JOJO

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
February 22, 2014 by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
February 23, 2014 by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
February 23, 2014 by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
February 23, 2014 by Roro

chemistry
When aqueous solutions of potassium hypochlorite and nitric acid are mixed, an aqueous solution of potassium nitrate and hypochlorous acid results. Write the net ionic equation for the reaction. Use H+ for the hydronium ion.
March 3, 2014 by smith

Chem 11
Calculate the miles of potassium hydrogen phthalate in your weighed sample. Potassium hydrogen phthalate : 4.0759g
January 31, 2012 by Anonymous

Chemistry (urgent)
Hydrolysis of a compound A, C7H6cl2 was carried out by refluxing with excess potassium hydroxide solution. the resulting solution was acidified with dilute HNO3 acid and excess silver nitrate was added to precipitate the chloride ions as silver chloride. 0.718g of silver ...
October 23, 2014 by Kris

chemistry
10. If the calcium oxide were obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 15.0 g? 11. If the 15.0 g of calcium oxide in the above problems were allowed to react with water, what amount of calcium hydroxide would be produced? ...
December 13, 2012 by greg

Chemistry
1)20 mL of a saturated of potassium nitrae at 50oC. Approximately, what mass of solid will precipiatae from the solution? 2)At 80oC, what mass of sodium dissolves in 1.0L of water 3.What minimum temperature is required to dissolve 24 g of potassium nitrate in 40 g of water? is...
November 21, 2011 by Maame

chemistry
Write and balance the equation for the reaction between nitric acid and potassium iodide. The products are potassium nitrate, iodine, nitrogen monoxide, and water. 2HNO3 + KI = KNO3 + I + 2NO + H2O (Did I write the equation correctly?)
April 14, 2016 by Kat

Chemistry
if you have a mixture of sodium chloride and sodium bromide, could you use its conductance to determine the concentration of each solute ?explain I am not sure of how to answer this question please some help!
January 9, 2013 by Anonymous

Science
The solubility of potassium nitrate is 40 at 30 degree celcius. Calculate the mass of water required to make a saturated solution by dissolving 15 gram of potassium nitrate at that temperature. Could u guys help me to get answer of this question. Plz help me otherwise my marks...
March 29, 2016 by Dõniyā

chemistry
write the formula for potassium chloride. KCl thanx, but i gave you the wrong one. we're studying acids and bases, and so it's actually hypobromous acid. HBrO
May 29, 2007 by beth

CHEMISTRY
what is the product of: 1. acetic acid + copper(II) sulfate 2. potassium phosphate + ammonium chloride 3. chromium(III) nitrate + ammonia(aqueous) please help me!
March 3, 2009 by YUMI

chemistry
what effect would each of the errors decribed below have on the concentration of potassium hydrogen phthalate... 1) so of the solids potassium hydrogen phthalate will spilled when transfering into the beaker... 2) not enough water was added to bring the volume up to the mark
March 13, 2011 by peter

Chemisrty
if electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solution of potassium hydroxide. what is the unbalanced equation?
March 20, 2016 by Mandy

chem
I have the following problems- write net ionic equations for reactions if no reaction write NR.... silver nitrate and ammonium carbonate sodium phosphate and potassium nitrate silver nitrate and barium chloride copper (II) chloride and sodium hydroxide cobalt (III) chloride ...
November 2, 2007 by mel

chemistry
ionic and net ionic equation for sodium carbonate and potassium chloride
February 4, 2013 by Anonymous

chemistry
What is the chemical equation for: 1. Cyclohexane and Potassium Manganate VII 2. Cyclohexen and Potassium Manganate VII
May 18, 2010 by Abigail

Chemistry
what is the molality of a solution made up of 20.5 grams of potassium chloride in 750 grams of water?
December 14, 2010 by Larry

chemistry
KNO3+H2SO4=K2SO4+HNO what mass of sulfuric acid in gram is needed for 2 moles of potassium nitrate? how many moles of mitric acid will be produced from 5 moles of sulfuric acid? what mass in gram of potassium sulfate will be produced from 5 moles of potassium sulfate?
August 3, 2014 by Rajah

AP CHEM
Please help me with thses AP CHEM homework problems and show the steps to how to find the solutions: Solid Liquid Titrations: Determine the concentration of the indicated liquid unknown given the mass of a solid standard and the buret data for the titration. #35) What is the ...
July 31, 2008 by shylo

chemistry
write a step by step procedure explaining how you will separate the sand, potassium chloride, and iron
September 6, 2012 by erica

chemistry
a large 1.5 x 10^6liter tank contains water polluted with lead (II) nitrate at a molarity concentraion of 2.5 x 10^-6 M to the tank, you add 59.7 liters of 0.075 M potasium chloride solution. did you add enough potassium chloride to remove all the lead(II) ions out of the ...
February 26, 2012 by tom

pharmaceutical calculations
15g of potassium chloride is diluted in is diluted in 2 L of sterile water for injection.What is the final strength (w/v)?
November 17, 2014 by shanica

Chemistry
Insoluble silver carbonate, Ag2CO3(s), forms in the following balanced chemical reaction: 2AgNO3(aq) + K2CO3(aq) = Ag2CO3(s) + 2KNO3(aq). What mass of silver nitrate, 2AgNO3(aq), reacts with 25.0 g of potassium carbonate,K2CO3(aq),if there is at least 5.5 g of silver nitrate ...
May 12, 2016 by Gale

chemistry/HELP PLLEASE
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water
February 18, 2011 by joy

chemistry/help
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(III)sulfate and manganese(II)sulfate and potassium sulfate and water.
March 13, 2012 by joseph

Chemistry
write out the balanced equation when Iron(II) sulfate, potassium permanganate, and sulfuric acid react to form Iron (III) sulfate, manganese (II) sulfate, Potassium sulfate, and water.
October 14, 2013 by Jane

chemistry
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water
February 18, 2011 by joy

chemistry
When aqueous solutions of potassium carbonate and magnesium nitrate are combined, solid magnesium carbonate and a solution of potassium nitrate are formed. The net ionic equation for this reaction is:
March 3, 2014 by Kay

chemistry
The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 10.2 mol of oxygen? Answer in units of mol
December 1, 2014 by DEANA

Physical Science
Suppose you dissolve 40g of potassium nitrate in 100 cm3 of water at 100 C. If half the solution os poured out, how many grams of potassium nitrate will the remaining solution contain?
February 7, 2011 by Matthew

chemistry
Potassium has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate needs to dissolve in water to absorb 114 kJ of heat?
September 2, 2011 by Lola

chemistry
Potassium has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate needs to dissolve in water to absorb 114 kJ of heat?
September 2, 2011 by Lola

chemistry
calculate the mass of potassium hydrogen phthalate needed to prepare a 0.1M solution in a 250 ml volumetric flask given that the molar mass of potassium hydrogen phthalate is 204,23g/mol
August 3, 2016 by Sam

chemistry
I need help with these questions 1. Calculate the percentage by mass of potassium in potassium sulfate K2 SO4 2. calculate the percentage by mass of nitrogen in ammonium nitrate Nh4 No3
January 25, 2015 by Victoria

Chemistry
Give the molecular, complete ionic, and net ionic equations for the combination of potassium chloride and magnesium sulfate.
March 23, 2011 by Bruce

chemistry
A piece of an aluminum can was cut into small pieces. Then 0.422 g of the chips from the can was used to prepare potassium alum according to the procedure we used. Calculate the theoretical yield (in g) of potassium alum that could be obtained in the reaction. (Alum MW=474.41 ...
December 2, 2014 by Jim

Chemistry
A sample of a mixture containing only sodium chloride (NaCl) and potassium chloride (KCl) has a total mass of 4.000g. When this sample is dissolved in water and excess silver nitrate is added a white precipitate (AgCl) forms. After filtration and drying, this precipitate had a...
February 2, 2007 by Steve

CHEMISTRY
Write equations for the solution process when ech of the following is dissolved in water. Potassium phosphate glucose Calcium chloride 1-propanol Butanone Ammonium sulfite
February 14, 2012 by Sarah

chem quantity
a sample of soil containing hydrated barium chloride potassium chloride plus inert material weighd 0.8076g. tha sample was then dissolvd in water n treated with silver nitrate.tha resulting precipitate was collectd n found to weigh 0.5846g. calculate tha percentage of precipitate
September 15, 2013 by shanice

chem/science
A piece of an aluminum can was cut into small pieces. Then 0.422 g of the chips from the can was used to prepare potassium alum according to the procedure we used. Calculate the theoretical yield (in g) of potassium alum that could be obtained in the reaction. (Alum MW=474.41 ...
November 24, 2014 by Caroline

chemistry
What physical properties of calcium chloride, citric acid, sodium iodide, potassium iodide, and sucrose have in common?
February 3, 2014 by ashley

science
Briefly explain why potassium chloride readily disolves in water? Include a sketch of the water molecule Showing its polarity.
November 6, 2015 by freedom

Chemistry- Drbob-help
I have placed the answer I got please help. A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 870mL 2. Calculate the % ...
February 9, 2011 by Paul

chem
A sample of potassium hydrogen oxalate, KHC204, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution.
November 21, 2012 by amanda78

chemistry
A sample of potassium hydrogen oxalate, KHC2O4, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution.
April 27, 2015 by mary

Earth Science
Why is potassium-argon dating most applicable to dating very old rocks? potassium’s long half-life potassium’s short half-life argon’s long half-life argon’s short half-life
February 21, 2013 by Anonymous

chemistry
What is the coefficient of oxygen in the following equation for the reaction of potassium (K) with oxygen (O2) to form potassium oxide (K2O? __ K + ___ O2 -> ___ K2O is it 4, 3, 2, or 1?
April 7, 2008 by Sarah

chemistry
write a balanced equation for the reaction that occurs when an aquesous solution of iron(II) chloride is mixed with an aqueous solution of potassium hydroxide
March 24, 2008 by natash

chemistry
overall balanced reaction: 14H+ + C2O7^2- + 6Fe^2+ -> 2Cr^3+ + 7H2O + 6Fe^3+ .5021g of impure sample containing potassium dichromate was analyzed by titrating a standard iron (II) sulfate solution. If 6.74 mL of 0.2312 N of iron (II) sulfate was required to reach the ...
October 26, 2009 by Anonymous

chemistry
Write the equation for the reaction, if any, that occurs when each of the following experiments is performed under standard conditions. a) crystals of iodine are added to an aqueous solution of potassium bromide. b) liquid bromine is added to an aqueous solution of sodium ...
May 13, 2007 by Krystal

Chemistry
If you are a mixture of ammonium chloride, barium sulphate and sodium chloride how would you produce a pure dry sample of each of those chemicals for the mixture.
February 24, 2010 by Jose-Ann

Chemistry
Draw a diagram of the Born-Haber cycle for potassium bromide. Include labels (DHf, DHSub, DHVap, DHI.E., DHE.A., DHL.E, etc.) of the different energies involved. Include the equation needed showing how the lattice energy would be calculated (DHL.E,).
December 3, 2012 by Jerett

chemistry
A sample of the primary standard, Potassium hydrogen phthalate, weighing 0.3589g requires 14.96mL of NaOH solution for neutralization. calculate the molarity of the NaOH solution.
October 21, 2009 by Reen

Chemistry
For each of the following, write a net ionic equation (modeled above). Wherever there is a precipitate, state the name of the precipitate (e.g “lead iodide” from above). Pop onto the net and see if you can find a description of the physical properties (e.g colour) of this ...
September 2, 2010 by Noelle

Chemistry HELP
you have 12.56 g of a mixture made up of sodium chloride and barium chloride. explain how you could use a precipitation reaction to determine how much of each compound the mixture contains
May 26, 2014 by Nathan

chemistry
if 10.3 lithium sulfate react with an abundant amount of potassium phosphate, what mass of lithium phosphate can you expect to isolate? lithium sulfate to lithium phosphate : 10.03 x 3 li3PO4 x 115.79 Lipo4 / 109.94 liSo4 / 3 LiSo4 = 10.9016179159 potassium phosphate to ...
January 28, 2016 by Boberto

chemistry
0.4276-g sample of a potassium hydroxide – lithium hydroxide mixture requires 31.20 mL of 0.3315 M HCl for its titration to the equivalence point. What is the mass percent lithium hydroxide in this mixture? 1.) 0.03120 L x 0.3315= 0.010343 moles HCl I'm not sure where I go ...
April 15, 2016 by Tiff

Chemistry
0.4276-g sample of a potassium hydroxide – lithium hydroxide mixture requires 31.20 mL of 0.3315 M HCl for its titration to the equivalence point. What is the mass percent lithium hydroxide in this mixture? 1.) 0.03120 L x 0.3315= 0.010343 moles HCl I'm not sure where I go ...
April 17, 2016 by Anonymous

chemistry
Potash is composed mainly of potassium carbonate, K2CO3. If 1.000g of potash reacts with sulfuric acid to produce 145 mL of carbon dioxide gas at STP, what is the percentage of potassium carbonate in the marble sample? K2CO3 + H2SO4 ==> K2SO4 + H2O + CO2
November 28, 2011 by Monique

chemistry
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate? The Ka2 for potassium hydrogen phthalate is 3.1 × 10-6.
April 6, 2013 by rodger

chemistry
You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate? The solubility product constant for calcium iodate is6.47 *10^-6. B) you have a 250ml solution of 0.13 M calcium ...
November 18, 2015 by anonymous

biochemistry
if 4 volumes of 0.1M monobasic potassium phosphate, KH2PO4, are mixed with 2 volume of 0.1 M dibasic sodium phosphate, Na2HPO4, what will be the pH of the mixture? What if 4 volumes of 0.1 M KH2PO4 are mixed with 8 volumes of 0.1 M ethanolamine base(pka=9.44) what will be pH ...
January 21, 2011 by dIrk

ap bio
10 . Which one of the following statements is NOT true about the resting potential? A. The neuron's plasma membrane is much more permeable to potassium than to sodium. B. The concentration of sodium is much higher inside the cell than outside. C. The sodium-potassium pump ...
November 13, 2008 by carol

Chemistry-need help ASAP
15 ml of 3.0 M NaOH are added to the following: 500.0 ml of pure water 500.0 ml of 0.1 M formic acid 500.0 ml of 0.1 M formate of potassium 500.0 ml of a solution containing 0.1 M formic acid and 0.1 M formate of potassium. Calculate the difference of pH resulting from the ...
April 14, 2014 by Sam

Chemistry
You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate? The solubility product constant for calcium iodate is6.47 *10^-6. B) you have a 250ml solution of 0.13 M calcium ...
November 14, 2015 by Jack

chemistry
You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate? The solubility product constant for calcium iodate is6.47 *10^-6. B) you have a 250ml solution of 0.13 M calcium ...
November 18, 2015 by anonymous

chem
The following equation describes the oxidation of an acidified solution of sodium oxalate (Na2C2O4) by potassium permanganate(KMnO4) 5C2O4 + 2MnO4 + 16H2SO4 --> 10CO2 + 2Mn + 16HSO4 + 8H20 What volume of 0.127M sodium oxalate in sulphuric acid will react with 3.57g of ...
April 7, 2009 by tomi

phys
Although most natural potassium nuclei are stable 39K (93.3%) or 41K (6.7%) nuclei, about 0.0117% are radioactive 40K nuclei, which have a half-life of 1.26 billion years. What fraction of all the potassium nuclei in your body will undergo radioactive decay in the next 1.04-...
June 6, 2013 by Anonymous

Organic chemistry
When synthesizing n-butyl bromide by allowing n-butyl alcohol to rect with sodium bromide and sulfuric acid what are the formulas for the salts that may precip. when the reaction mixture is cooled?
March 20, 2010 by Tammy

ap biology
10 . Which one of the following statements is NOT true about the resting potential? (28.3) [Hint] A. The neuron's plasma membrane is much more permeable to potassium than to sodium. B. The concentration of sodium is much higher inside the cell than outside. C. The sodium-...
November 6, 2008 by carol

chem
Potassium nitrate has a lattice energy of -163.8 kcal/ mol and a heat of hydration of -155.5 kcal/ mol . How much potassium nitrate has to dissolve in water to absorb 105kj of heat? Answer in kg.
September 19, 2012 by michelle

Chemistry
Which of the following is not suitable for testing the presence of an acid? A) adding aqueous potassium carbonate. B) adding aqueous potassium hydroxide. C) adding Universal Indicator. D) adding zinc powder. Personally, I feel that all of them are suitable.
October 13, 2013 by Hao

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