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August 23, 2014

Search: treated with sodium iodide in acetone

Number of results: 4,238

11th grade chemistry
whats the ionic name for strontium iodide
November 20, 2008 by latifa

Chemistry
What is the solubility of calcium iodide (in g per 100 cc of cold water)?
February 24, 2010 by Jeanna

science
Calculate the molarity of 500. mL of solution containing 21.1 g of potassium iodide
October 12, 2010 by kate

chemistry
How many grams of magnesium iodide are needed to make 125 ml of a 5M solution
March 31, 2011 by John

Chem.
What is the overall stoichiometry for the reaction between iodide and peroxydisulfate ions?
February 13, 2014 by Kay.

college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
November 17, 2010 by tim

college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?
November 17, 2010 by tim

Chemistry
What mass in grams of a 0.500 m(molal) solution of sodium acetate, CH3CO2Na, in water would you use to obtain 0.200mol of sodium acetate?
February 2, 2014 by Jessica

chemistry ........................chemistry
Sodium Na+ Intense yellow Barium Ba++ Green Calcium Ca++ Brick red Copper Cu+ or Cu++ Blue-green Strontium Sr++ ? Lithium Li+ ? Sodium and potassium mixture Na+&K :yellow light Observations using the cobalt glass filter Sodium & potassium mixture Na+&K+:reddish color Potassium...
October 15, 2012 by Maria

chemistry
What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules. x= Calculate the cohesive energy ...
September 18, 2013 by Urgent help

Chemistry
What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules. x= Calculate the cohesive energy ...
September 18, 2013 by Urgent help

Chemistry
What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules. x= Calculate the cohesive energy ...
September 18, 2013 by Urgent help

chemistry Please who helps me stpe by step
2gm of mixture hydrated sodium carbonate na2c03 /OH20 and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc of this solution was titrated, using methyl orange as indicator and 22.5cc of 0.087N hcl were required for neutralization. Calculate the percentage of...
June 21, 2014 by ken

Chemistry
1. How many moles of Al(CN)3 are in 199 g of the compound? 2. 96.0 mol of P4O10 contains how many moles of P? 3. If 4.71 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 -> 6H20+5CO2 4. How many ...
October 7, 2012 by Anonymous

Chemistry
1. How many moles of Al(CN)3 are in 199 g of the compound? 2. 96.0 mol of P4O10 contains how many moles of P? 3. If 4.71 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 -> 6H20+5CO2 4. How many ...
October 8, 2012 by Anonymous

chemistry
Sodium chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine gas can be obtained from 2.50 mol NaCl?
May 4, 2010 by anna

science(chemistry)
why sodium carbonate against hydrochloric acid titration using phenolphthalein indicator does not go to completion but stops at the sodium hydrogen carbonate stage.
November 21, 2011 by yussif

Chemistry
It requires 37.0 mL of a sodium hydroxide soltution to neutralize 0.75 grams of phosphoric acid. Using a balanced equation, determine the concentration of the sodium hydroxide solution.
May 21, 2012 by Leah

Chemistry I
If 30.0 mL of 0.2 M nitric acid and 30.0 mL of 0.25 M solution of sodium hydroxide are mixed, what is the molarity of sodium nitrate? Assume that total volume of the solution after mixing is equal 60.0 mL.
March 14, 2013 by Therese

chemistry
The directions state "weigh about 5 grams of sodium chloride". Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
February 11, 2014 by Rachel

chem
Explain why ethanol and acetone are not suitable solvents for extracting organic compounds from aqueous solutions. does it have to do with their density?
October 14, 2008 by Jason

chemistry
Calculate the molality of acetone in an aqueous solution with a mole fraction for ace- tone of 0.171. Answer in units of m
September 16, 2012 by cheri

Chemistry
What is antacid? Why is sodium hydrogen carbonate an effective antacid but sodium hydroxide is not? Thx~
April 10, 2009 by Anonymous

chemistry
how many grams of sodium chloride do you need to prepare 250 mL of a 5.00% sodium chloride solution?
October 24, 2010 by Anonymous

La Salle
How many grams of sodium chloride do you need to prepare 250 mL of a 5.00% (w/v) sodium chloride solution?
October 25, 2010 by Jackie

chemistry
How many grams of sodium chloride do you need to prepare 250 mL of a 5.00%(w/v) sodium chloride solution
March 10, 2011 by NeeNee

chemistry
How many grams of sodium cyanide would be required to make 55 grams of sodium sulfate?
May 15, 2011 by Sabrina

chemistry
what weight of sodium hydroxide(NaOH) is required to make 20ml of 5% (w/v) sodium hydroxide?
August 20, 2011 by 97896

Science
what mass of sodium carbonate is present in a 3000cc of a 1.2 solution? The density of the sodium carbonate is 1.5 g/ml.
September 20, 2011 by Shelly Perez

Chemistry
how many moles of sodium oxide are produced when 3.9 moles of of sodium combine with excess oxygen
January 29, 2013 by Chris

Chemistry
If the molar concentration of sodium ions is 0.44 M, then the concentration of sodium sulfate is 0.88 M True or False
October 16, 2013 by Anonymous

CHEMISTRY
18cm^3 of 1.0M H2SO4 just reacted with 24cm^3 of 1.5M NaOH to form sodium sulfate & water. Calculate the amounts in moles of sulfuric acid & sodium hydroxide reacting & write an equation for the reaction.
October 12, 2013 by Janey

chemistry
1.The equilibrium constant for the oxidation of elemental iron metal, Fe, by oxygen, O2 to form hematite, according to the reaction 2Fe + (3/2)O2 = Fe2O3 is known to have the value K=exp(+68.8) at 1000C. The equilibrium constant for the formation of CO2 from carbon and O2, C...
July 5, 2010 by GM

Chem
Is sodium benzoate soluble in HCl? I put yes What about NaOH? It's supposed to be created from a reaction with benzoic acid and NaOH What about NaHCO3? And aq. sodium benzoate plus HCl? And aq. sodium benzoate plus NaOH?
May 25, 2010 by Alex

chemistry
If 16.9 g sodium carbonate is obtained from the thermal decomposition of 75.0 g of sodium hydrogen carbonate according to the unbalanced equation, NaHCO3 Na2CO3 + H2O + CO2 What is the percent yield?
September 18, 2011 by kaci

chemistry
Calculate the residence time of sodium in millions of years if the total amount of sodium in the oceans is 1.5 x 10 to the 22 grams, and is supplied to the ocean at a rate of 2.2 x 10 to the 14 grams per year.
June 17, 2012 by Dewayne

chemistry
sodium metal dissolves im liquid mercury to form of NA(s) and Hg(l) are 0.97 g/ml and 13.6 g/ml respectively. a sodium amalgoum is made by dissolving 10 ml Na (s) in 20.0 ml Hg (l). The final volume of solution is 21.0 ml. Calculate the molarity of Na in the solution.
January 31, 2013 by masharat

science
sodium is a metal and chlorine is a poisonous gas. Neither is safe to eat. However, when sodium and chlorine combine, it produces edible table salt. What can be concluded?
December 15, 2013 by Amatullah

CHEMISTRY
How many liters of softened water, containing a sodium concentration of 0.050% sodium by mass, have to be consumed to exceed the FDA recommendation? (Assume a density of 1.0 g/mL for water.)
June 9, 2014 by TITO

chemistry
when 25.0 of lithium iodide completely dissolves in water how much heat is evolved
February 4, 2010 by Anonymous

chemistry
what is the balanced equation for potassium iodide and solid zinc in an acidic solution
June 21, 2010 by Anonymous

Chemistry
We are always told to use freshly prepared potassium iodide (KI) for titrations. Why?
January 8, 2011 by candy

Chemistry
how many grams of solid iodine are produced by the decompostion of 2.1 g of hydrogen iodide gas?
November 12, 2011 by Taylor

chemistry
What is the molarity of a solution prepared by dissolving 2.41 g of potassium iodide, KI in 100 mL of water?
May 6, 2012 by Ambra

chem
what is the number of moles of manganese (II) iodide in a sample whose mass is 650 g?
December 18, 2012 by simon

Chemistry
What method of purification is used to separate iodoethane from traces of hydrogen iodide? Thanks :)
April 18, 2013 by Matt

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

solubility graph
What temperature is necessary in order to dissolve twice as much fo these solids in 100cm3 of water as can be dissoved at 20gC. a. sodium nitrate b. potassium nitrate c. sodium choride
November 10, 2008 by tony

Chemistry
I have no idea how to approach this problem. Given sodium hydroxide, sulfuric acid, sodium silicate and magnesium hydroxide, which has low solubility? Please help, I'm reviewing for a test.
December 17, 2009 by Jan

chemistry
which of the following was not one of the products when you titrated the vinegar solution with sodium hydroxide? HC2H3O2+NaOH===>NaC2H3O2+H2O a salt water sodium acetate acetic hydroxide
July 13, 2010 by Anonymous

Chemistry(Please help)
For an acetic acid-sodium acetate buffer to have a pH of 4.64, what molar ratio of CH3COOH to Na+ CH3COO is needed? I know that the Ka value for acetic acid is 1.8e-5 and that I have to divide this value by the value of sodium acetate but I do not understand how you get the ...
April 9, 2012 by Hannah

chemistry another Q
Which, 9-fluorenol or 9-fluorenone, would have higher Rf value on a silica gel plate with 30% acetone/70% hexane at the eluent? Explain.
February 2, 2009 by Jane

chemistry
Describe how to prepare a 1M solution of sodium hydroxide from concentrated sodium hydroxide (17.6 M)
February 8, 2010 by Jay

Inorganic chemistry
A 20.0 mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCl)aq). What is pH after the addition of50.0 mL HCl(aq)? Kbof CH3CO2^- = 5.6x10^-10) So far I have the Initial amount of sodium acetate (0.02)(0.20) = .004 mol Amount of HCl added (0.05)(0.11) = 0.0055 mol ...
April 14, 2009 by Steve

chemistrybuddy
hi, i am trying to develop a lab where i find the solubility of Sodium acetate. I was wondering in i was in the right path. We are given these three compounds: Acetic acid aka vinegar baking soda (sodium hydrogen carbonate) 0.100mol/l Naoh(aq) 0.100/l HCL(aq) So we are not ...
June 2, 2008 by chemistrybuddy

chemistry
hi, i am trying to develop a lab where i find the solubility of Sodium acetate. I was wondering in i was in the right path. We are given these three compounds: Acetic acid aka vinegar baking soda (sodium hydrogen carbonate) 0.100mol/l Naoh(aq) 0.100/l HCL(aq) So we are not ...
June 2, 2008 by chemistrybuddy

chemistry
What is the freezing pint of 0.0091 m aqueous sodium phosphate, Na3PO4? Assume that sodium phosphate is a strong electrolyte and it functions ideally in solution. (express your answer in degrees Celsius)
September 14, 2010 by shawn

chemistry
Potassium iodide (KI) is used to treat iodine deficiencies. What is the %(w/v) of a 55 mL solution containing 1.3 g of KI? 0.024
February 22, 2012 by krystal

pharma
22 g of potassium iodide is diluted in 1.5 L of sterile water for injection. What is the final percent strength (w/v)?
July 14, 2014 by ki

Chemistry
Calculate the mass of sodium chloride (NaCl) produced when 5.50 moles of solid sodium reacts in excess chlorine gas. (Hint: Start by writing a balanced chemical equation) Please help me understand HOW to solve this problem.
May 27, 2009 by Ryan

chemistry
suppose 5.00g of sodium carbonate reacts completely with excess of hydrochloric acid. Show how to calculate the mass (g) of sodium chloride that would be formed. Na2CO3 + 2HCl = 2NaCl + CO2 + H2O What is the limiting reagent?
July 21, 2011 by stephanie

Bioelectricity
Na equil-v: Only sodium may cross a membrane separating two compartments. At a temperature of 28∘C, the concentrations of sodium ions are: intracellular: 100 extracellular: 485 What is the equilibrium potential? Give a numeric answer within 1%, in mV.
February 19, 2013 by B

Organic Chemistry
So we did a preparation of t-pentyl Chloride experiment in class the other day using t-pentyl alcohol, HCL, Aqueous sodium Bicarbonate, and calcium chloride as the drying agent. Little confused on a few of these questions Aqueous sodium bicarbonate was used to wash the crude t...
October 20, 2013 by BigBlue

chem.
Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate and sodium nitrate. Suppose 43.5 mL of 0.040 M silver(I) nitrate solution and 26.58 mL of 0.10 M sodium sulfate solution are mixed. What is the maximum number of grams of silver(I) sulfate that can be made?
February 28, 2010 by Tiffany

Chemistry
Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate and sodium nitrate. Suppose 45.98 mL of 0.060 M silver(I) nitrate solution and 26.64 mL of 0.10 M sodium sulfate solution are mixed. What is the maximum number of grams of silver(I) sulfate that can be made?
February 22, 2012 by Jade

Chemistry
A solution of 100.00mL of 0.2000mol/L sodium carbonate and 200.00mL of 0.1000mol/L calcium nitrate solutions are mixed together according to the reaction: sodium carbonate + calcium nitrate→ calcium carbonate + sodium nitrate. how would you calculate the mass of calcium ...
August 20, 2012 by Walker

Chemistry
Please help me with this! Rank the solvents according to their polarities, from the most polar to nonpolar. ethyl acetate, water, acetone, hexane, ethanol
September 28, 2011 by Michelle

Chem
what does an -ite or -ate ending in a polyatomic ion mean? i'm thinking it mean Oxygen is in the formula, or is it Sulfur is in the formula? i'm not sure oxygen is in both ites and ates. The ate has more oxygen than ite. NaClO2 sodium chlorite NaClO3 sodium chlorate NaClO4 ...
January 9, 2007 by Dennis

chemistry
sodium azide, decomposes according to the following equation: 2NaN3 (s) -> 2Na (s) + 3N2(g) What mass of sodium azide is required to provide nitrogen needen to inflate a 80.0 L bag to a pressure to 1.35 atm at 25 c?
April 19, 2010 by eveline

Chemistry
When sodium Metal is dropped into water, all the metal reacts in the equation shown below. What mass of hydrogen is liberated from a 46.0 gram piece of sodium? 2Na(s)+2H2O(I) > 2NaOH(aq)+H2(g)
January 13, 2012 by Franklin

organic chemistry
when i add methyl salicylate to aqueous sodium hydroxide, immediately a white solid forms... that is sodium salicylate is it?? Since it hasn't been heating under reflux yet.
March 18, 2013 by Anonymous

chemistry
Atomic sodium is studied by photoelectron spectroscopy. What is the maximum wavelength of the incident radiation that will ionize the most weakly held electrons in sodium and scatter them so that their de Broglie wavelength measures 3.091e-10 m?
March 23, 2013 by gluck

chemistry
Predict the the product for the following reactions. zinc + hydrochloric acid sulfuric acid + sodium hydroxide sodium + hydrogen acetic acid + coppper
December 5, 2010 by Amanda

Chemistry
Chlorine gas + aqueous sodium bromide --> aqueous bromine + aqueous sodium chloride. I got: Cl2+2NaBr2(aq)-> Br2(aq)+2NaCl2(aq) Is this right ?
January 7, 2013 by John

Chemistry 22
1. Lead (Pb), has a density of 11.35 g/ml. If I have 3.45 cc of lead, what is the weight in grams? 4. I am traveling at 100 mph per hour before getting pulled over. Convert this into meters Per second. (A) 161 m/s (C) 161000 m/s (B) 4.44 m/s (D) 44.4 m/s (E) 444.44 m/s 5. I ...
August 31, 2010 by Ivy

science
dr. halite combined sodium metal with chlorine gas to make sodium chlorine (table salt). The chemical reaction used up all of the metal and sll of the gas. If dr halite made 116 g of table salt and started with 68 g of chlorine gas, then how many grams of sodium metal did he ...
April 7, 2013 by artie

chemistry
Determine how much heat is evolved or absorbed when 20.0 of lithium iodide completely dissolves in water.
February 1, 2010 by cindy

Chemistry
What is a reasonable discussion of the method for the preparation of a sample of lead iodide and hygrated copper sulphate?
March 17, 2010 by Gillian

chemistry
what are the products of electrolysis of the following solutions? A. potassium iodide B. nickel sulphate C. magnesium chloride
March 15, 2011 by Anonymous

chemistry
Determine how much heat is evolved or absorbed when 40.0 g of lithium iodide completely dissolves in water.
September 5, 2011 by Sara

Analytical Chemistry
What is the balanced equation for oxidation of iodide ion by oxygen (O2) that occurs which produces iodine.
January 30, 2012 by kalynn

Chemistry
Propose a method for determining the specific heat, Cp, for a metal like sodium which reacts with water. Allow the sodium to equilibrate in a metal calorimeter filled with inert gas. Measure the equilibrium temperature
March 21, 2007 by Mani

chemistry
how many grams of sodium are used to prepare 50 boxes of crackers? sodium per serving is 140mg, serving size is .50 oz for 6 crakers. i got 112g and the answer is suppose to be 110g and i cant figure out how to get 110 thank you
January 24, 2012 by Kelly

chemistry
How many grams of Sodium chloride are in 53.2 g of solution that is 0.50% by mass sodium chloride?
December 4, 2011 by Aamnda

chemistry
how many moles of sodium chloride are in 937 mL of a 1.88 M solution of sodium chloride?
April 29, 2012 by Randy

chemistry
How many moles of sodium chloride are in 711 mL of a 2.01 M solution of sodium chloride
November 17, 2013 by Anonymous

Chemistry URGENT
I need help figuring out the calculations of my experiment. I'm sure I did something wrong cause I can not figure how to calculate the mass of sodium chloride. My measurements follow. 1. 250 mL beaker = 8.4 2. Mass of container = 0.4013 3. mass of container + sodium chloride...
April 26, 2014 by jazz

chem
"The percentage of sodium hydrogen carbonate, NaHCO3, in a powder for stomach upsets is found by titrating .275 M hydrochloric acid. if 15.5 mL of hydrochloric acid is required to react with .500 g of the sample, what is the percentage of sodium hydrogen carbonate in the ...
October 19, 2006 by Dan

chemistry
Sodium metal adopts a body-centered cubic structure with a density of 0.97g/cm3. A. Use this information and Avogadro's number to estimate the atomic radius of sodium. B. If it didn't react so vigorously, sodium could float on water. Use the answer from part a to estimate the ...
April 3, 2014 by Liz

chemistry
Sodium metal adopts a body-centered cubic structure with a density of 0.97g/cm3. A. Use this information and Avogadro's number to estimate the atomic radius of sodium. B. If it didn't react so vigorously, sodium could float on water. Use the answer from part a to estimate the ...
April 3, 2014 by Anonymous

statistics
Suppose a new treatment for a certain disease is given to a sample of n=200 patients. The treatment was successful for 166 of the patients. Assume these patients are representative of the population of individuals who have this disease. (a) Calculate the sample proportion of ...
April 5, 2012 by Kya

chemistry
1L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.87. what is the total molarity of the original buffer?
March 10, 2013 by stephanie

chemistry
What is the combined volume when 10 cm3 of acetone are added to 10 cm3 of distilled water?
November 3, 2010 by blannca

organic chemistry
why is it that protonated pyrone have a higher pKa than protonated acetone?
January 27, 2014 by Anonymous

Chemistry
2.500g sample of a mixture of sodium carbonate and sodium chloride is dissolved in 25.00ml of 0.798M HCl. Some acid remains after the treatment of the sample. If 28.7 ml of 0.0108M NaOH were required to titrate the excess hydrochloric acid how many moles of sodium carbonate ...
March 3, 2009 by eliz

chemistry
why is it that protonated pyrone have a higher pKa than protonated acetone?
January 27, 2014 by Anonymous

chemistry
sodium is a very good conductor of electricity and scientists are working on ways of using it to make electrical wires. what are the main problems the scientists must try to solve before sodium can be used in this way?
October 12, 2010 by anonymous

chem.
sodium metal is insoluble in ether. sodium metal dissolves in water to produce a gas. The copper bottom on a frying pan turns black after several heatings. Are these physical or chemical changes..
February 16, 2011 by Renee

Biology- Amylase
Hello, In our class, we are doing a hypothetical digestion of starch by amylase lab. I do not know where to begin with this following information. If I add Benedict's solution (which I know will change color when the presence of sugar is noted). After all of these tubes are ...
November 4, 2007 by Nelson

chemistry
whta are the products of electrolysis of the following solutions? potassium iodide nickel sulphate and magnesium chloride
March 15, 2011 by Anonymous

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