October 31, 2014

Search: sodium sulfate + strontium nitrate

Number of results: 4,549

organic chemistry
Aqueous sodium bicabonate used to wash the crude n-butyl bromide. a) What was the purpose of this wash? Give equation. b)Why would it be undesirable to waash the crude halide with aqueous sodium hydroxide?
October 24, 2011 by Ivy

with regard to the reaction of sodium with chlorine (2 Na + Cl2 = 2 NaCl); if 1.0 mole of Cl2 is heated in the presence of 6.0 moles of sodium metal, how many moles of NaCl will be formed?
May 5, 2011 by Mal

Aqueous sodium chloride and aqueous sulfurous acid are formed by the reaction of aqueous sodium sulfite and aqueous hydrochloric acid . write the balanced equation?
September 18, 2012 by nick

What will the angle of refraction be for a ray of light passing from air into a sodium chloride crystal, if the angle of incidence is 60.0°? The index of refraction of sodium chloride is 1.53.
October 17, 2012 by leonard

ferrous sulphate + sodium hydroxide forms ppt. ferrous hydroxide + sodium sulphate is left in the solution write a balanced chemical eqn.. for this..
June 11, 2013 by jane

Question: When a pink aqueous solution of potassium permanganate, faintly acidified with dilute sulfuric acid was treated with 10% aq. hydrogen peroxide, the reaction took place with the evolution of gas bubbles, and the pink solution was turned colorless. Further chemical ...
May 5, 2011 by Shadow

Write and balance equations for the following reactions. A)Iron metal and Chlorine gas react to form solid iron(III) chloride. B)Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas. C)Solid magnesium reacts with aqueous silver nitrate to ...
February 28, 2010 by Jack

Food Education
How is Sodium used in the body? I need to know this for some Food Tech reaserch. Thanks. Thank you for using the Jiskha Homework Help Forum. The body uses sodium to regulate blood pressure and blood volume. Sodium is also critical for the functioning of muscles and nerves...
November 19, 2006 by Paige

what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?
October 28, 2008 by Jason

what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?
October 28, 2008 by Jason

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used.
February 3, 2010 by r

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used.
February 3, 2010 by r

What percent of the original sample of strontium-90 (half-life = 28.9 years) will remain after the following time periods?after 18 years? after 47.5 years? after 1008 years?
November 5, 2011 by Anonymous

I am learning the different types of chemical reactions synthesis, decomposition, single displacement, and double displacement I am also learning skeletal equations word equations and balancing the equations I know how to balance equations if I am given the formula in symbols ...
March 3, 2014 by Sam

If 15g of Sodium Hydroxide are treated with sulphuric acid to produce sodium sulphate, how many grams of sulphuric acid are required. write the balance equation for this reaction and calculate the quantity of sulphuric acid.
April 4, 2011 by Anonymous

DR Bob one more
1. calcium carbonate < calcium oxide + carbon dioxide dr. Bob Hydrolic acide + sodium hydroxide < sodium chloride + water this cant be balanced already as assignment says we must balance each one
December 13, 2007 by sam

Write the balanced equation of the reaction described below. Include the states (s, l, aq, g) for the reactants and products. When aqueous calcium chloride and sodium phosphate are mixed, solid calcium phosphate and acqueous sodium chloride are produced.
January 15, 2013 by thad

How many grams of sodium chloride are there in 55.00 Ml of a 1.90 M aqueous solution of sodium chloride? any idea. 2. What is the concentration of chloride ions in a 0.193 M solution of potassium chloride?..heeeeeeeeeeeelp.
November 15, 2009 by Cool boy.

Search: a chemist is asked to make a 25% sodium chloride from 20 ml of a 20% sodium chloride solution. How much salt should she add to make it a 25% solution?
March 29, 2011 by Linda

a molecule of sodium carbonate contains 2 atoms of sodium to every 3 atoms of oxygen. could a compound containing 12 atoms of sodiumand 15 atoms of o2 be na carbonate explai
March 4, 2014 by AMY

A student weights 1.700 g of succinic acid and dissolves it in water in a 250.0 mL volumetric flask. A 25.00 mL sample of this solution is withdrawn and placed in a 125 mL Erlenmeyer flask, to which 5 drops of the acid-base indicator phenolphthalein is added. This solution is ...
October 26, 2014 by Mary

Could someone help me with these problems; A)If 5.97mL of a solution of NaCl contains 2.54g of sodium ion, what is the molarity of the sodium chloride solution? -I know M=#moles solute/L but when I do this I get 7.28*10^-3 which is wrong, the answer should be 1.85*10^-2 B) ...
January 28, 2011 by Adam

chemistry help~~~~ Please!!!
Sodium-24, t1/2 = 15.0 hr, can be used to study the sodium balance in animals. If a saline solution containing 25 μg of 24^Na is injected into an animal, how long can the study continue before only 1 μg is left? Show work please!
April 14, 2014 by Kim

why does the solubility of ytterbium sulfate decrease with temperature?
May 4, 2008 by Anonymous

how do you get the percent of a solution that is 2.5 ml copper sulfate and 7.5 ml water?
December 15, 2009 by Emma

How do i find the weight % of sulfate if I am given the mass?
October 13, 2011 by kim

Is the dissolution of calcium sulfate endothermic or exothermic? How do you know?
March 17, 2013 by Chris

How to separate and isolate the components of barium sulfate?
June 11, 2013 by Hope

AP Chemistry
Form 300 mL of 0.25 M Copper 2 sulfate pentahydrate
September 17, 2014 by Jon

Need help with my pH calculations? 1) 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of solid sodium carbonate are dissolved in the same beaker of water, transferred to a volumetric flask and made to 250.0 mL. The Ka for HCO3 – is 4.7 x 10–11. a) What is the ...
April 4, 2014 by dan

Hydrogen Chloride and Sodium Carbonate react to produce Hydrogen Carbonate and Chloride Sodium how do i write that in net ionic form?
December 11, 2007 by michelle

Sodium carbonate, Na2CO3(s), can be prepared by heating sodium bicarbonate, NaHCO3(s). 2NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) Kp = 0.23 at 100ēC If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium at 100ēC, what will the total gas pressure ...
July 10, 2012 by wael

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation 2Na(s)+2H20(l)=2NaOH(aq)+H2(g)? Please show me step by step how to do this because I have 5 other questions like this one on a worksheet and...
April 17, 2008 by Chris

Hydrolysis of Salt: Using the universal indicator we had to determine the pH of sodium acetate, and the results i got was pH- 8.5 . Now i have to explain this with a equation to show hydrolysis. I don't know how to write it out but, Sodium is not hydrolyzed and acetate is ...
March 24, 2010 by Saira

A 2.50 gram sample of bronze was dissolved in sulfuric acid. The copper in the sample reacted with sulfuric acid to form copper sulfate. Cu (s) +2 H2SO4 (aq) -> CuSO4 (aq) +2 H2O (l) The copper sulfate formed in this reaction was mixed with I to form copper iodide: CuSO4 (...
October 31, 2010 by Dave

A stock solution's hypochlorite activity was determined as follows: . - 2.00g of liquid sodium hypochlorite (NaOCl) was weighed into a flask and diluted with 50mL deionized water.10mL of 10% sulfuric acid and 10mL of 10% potasssium iodide were added, followed by titration with...
August 4, 2010 by angela

Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution. The sodium bicarbonate reacts with sulfuric acid as follows. 2 NaHCO3(s) + H2SO4(aq) --> Na2SO4(aq) + 2 H2O(l) + 2 CO2(g) ...
December 11, 2010 by hannah

Last Question Plz helppp:((im soo sleepy!!:(
1)The reaction between solid sodium and iron(III) oxide, Fe2O3(s), is one in a series of reactions that occurs when an automobile air bag inflates. 6Na(s) + Fe2O3(s) -> 3Na2o(s) + 2Fe(s) If 100.0 g of iron(III) oxide are used in this reaction, what mass of solid iron will ...
December 19, 2012 by Nikki

I did an experiment where I had 5 ml of MgCl2, then 5 ml NH4 solution (NH4OH (aq)) was added and it was observed that a precipitate formed; cloudy solution. After I added 1g of NH4Cl(s), the solution clears up (transparent). 2nd experiment: There was 5ml Lead (II) Nitrate in a...
March 30, 2012 by Fresca

Which of the following is not a terminal electron acceptor in anaerobic respirations? a)nitrite b)carbon dioxide c)hydrogen sulfide d)sulfate e)nitrate Question 2 Which of the following is not an end product of fermentation? a)pyruvate b)none of the answers are correct c)...
September 10, 2010 by Tommy

The American Dental Association recommends that an adult female should consume 3.0mg of flouride per day to prevent tooth decay. If the flouride is consumed as sodium flouride (45.24% F)what amount of sodium flouride contains the recommended amount of flouride in mg?
September 20, 2008 by natash

orgenic chemistry
Aqueous sodium bicarbonate was used to wash the crude n-butyl bromide. What was the purpose of this wash? Give equations. Why would it be undesirable to wash the crude halide with aqueous sodium hydroxide?
December 1, 2009 by priyanka

A precipitate of calcium phosphate is formed when aqueous solutions of sodium phosphate and excess calcium chloride are mixed. If 100.0 mL of 1.5 M sodium phosphate solution is the limiting reactant, how many grams of calcium phosphate can be expected?
September 3, 2010 by Ethan

There are four main methods of making salts: Acid + Metal, Acid + insoluble base, Acid + alkali and solution of salt A + solution of salt B. a. a student wanted to make some sodium sulfate. i. which method would be best to use? ii. why? iii. which reactants would you use? iv. ...
April 6, 2008 by Chloe

Not sure if i posted this but Need help with my pH calculations? 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of solid sodium carbonate are dissolved in the same beaker of water, transferred to a volumetric flask and made to 250.0 mL. The Ka for HCO3 – is 4.7...
April 4, 2014 by dan

Determine the percent composition by mass of ammonia sulfate.
February 19, 2009 by asdfjkl;

How would you prepare 250.0 ml of a 0.6 M aluminum sulfate solution
March 2, 2009 by lyne

What is formed when solid copper sulfate is mixed with water?
April 28, 2010 by rhon

theoretical percent sulfate in AlK(SO4)2*H2O
October 11, 2010 by thomas richards

what is the net ionic equation for tin + copper 2 sulfate?
April 23, 2011 by cee

calculate the mass of sulfur in 6.0 g of Iron (III) sulfate
October 25, 2011 by payton

how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4
May 21, 2012 by Jordan

If i have .0030M BaSO4 how do I calculate the moles of sulfate?
October 10, 2012 by Allie

how many mole of calcium sulfate are in a 100mL of .86M solution?
November 26, 2012 by Riley

How many sulfate ions are there in 2.500 mL of 5.0 x 10-15 moles of Cr2(SO4)3?
September 22, 2013 by Zac

What is formed if solid copper sulfate is mixed with water
October 7, 2013 by cece

What is the concentration of Sulfate ion in a 0.5 M solution of Al2(SO4)3?
June 17, 2014 by Praphul

ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of the molarity of each solution the same?
February 13, 2012 by wendy

One-half serving of soy sauce contains 389 milligrams of sodium. How many grams of sodium from soy sauce are included in an egg-foo-young dish made from 4 servings of soy sauce? Round results to the nearest tenth of a gram.
December 20, 2009 by kate

Sodium, Na+1 and chlorine Cl-1 often react together to form a molecule they do this because sodium gives an electron away chlorine picks up the electron chlorine gives an electron away sodium picks up the electron they are near each other on the periodic table they are far ...
October 11, 2010 by kaiya

Hello, I have to answer this question for my assignment. Compare and contrast how different electrolytes-sodium, potassium, and chloride-function in the body. This is what I have so far but I am not sure if this is the whole answer. The Electrolytes in your body are sodium and...
December 10, 2010 by Nikol

Experiment on Titration of Acids and Bases Suppose some deionized water was left in the buret before it was filled with the oxalic acid solution you were using as a primary standard. When you perform the standardization of sodium hydroxide in Part 3, how would the excess water...
December 7, 2010 by Jerome

Question: The American Dental Association recommends that an adult female should consume 3.0mg of fluoride (F-) per day to prevent tooth decay. If the fluoride is consumed as sodium fluoride (45.24% F), what amount of sodium fluoride contains the recommended amount of fluoride...
October 1, 2007 by leo

If 15.0 grams of Iron (III) oxide reacts with 25.0 grams of Strontium phosphate, how many grans of Iron (III) phosphate will be produced?
May 7, 2014 by Anonymous

science (chem)
I have a question. I'm forming Isopentyl acetate by the esterfication of acetic acid with isopentyl alcohol. The rxn is shifted so that the ester is produced by using excess acetic acid. In isolating the ester, the excess acetic acid and and isopentyl alcohol are removed by ...
February 27, 2008 by ~christina~

A chemist carries out a reaction between 10.0g of sodium and 20.0g chlorine. Which reactant element is present in excess? What quantity of sodium chloride is produced? What quantity of the elment in short supply would have been required to react with all of the element present...
September 13, 2010 by Austin

I have found a balanced redox equation for removal of silver sulfide using sodium hydrogen carbonate in aluminium to say: 2Al + 3Ag2S + 6H2O --> 6Ag + 2Al2(OH)3 + 3H2S What happens to the Na and C component of the sodium hydrogen carbonate? And why is it not included on LHS...
November 26, 2010 by bob

Calcium can also be precipitated out of the solution by adding sodium phosphate (Na3PO4) to form solid calcium phosphate. A.) write a net ionic equation for this process B.)calculate the mass of this precipitate you would generate from treating 1.000 L of your unknown sample ...
March 25, 2014 by Mai

Clean up the following sentences by identifying and correcting misspellings and misused/incorrect words. QUESTION: 1. The patient's epistaxis was treated with silver nitrite after dried blood in the nasal secretions were removed. ANSWER: 1. The patient's epistaxis was treated ...
July 16, 2011 by Leslie-To:Writeacher

I have the same question as anonymous person before me so I just copy the question from that person, here is the question please help the two of us! if you have a mixture of sodium chloride and sodium bromide, could you use its conductance to determine the concentration of ...
January 9, 2013 by Kim

1) All of the following are oxidation-reduction reactions except (a) 2Al(s) + Fe2O3(s) ¨A12O3(s) + 2Fe(s) (b) (NH4)2Cr2O7(s) ¨ Cr2O3(s) + N2(g) + H2O(1) (c) Cu(s) + 2H2SO4(aq) ¨ CuSO4(aq) + SO2(g) + 2H2O(1) (d) Hg(NO3)2 + 4KI ¨ K2HgI4(aq) + 2 KNO3(aq) (e) 2Na(s) + 2H2O(1...
April 10, 2010 by write2khin

chemistry help plz
if 4.55 g of sodium sulphide and 15.0 g of bismuth nitrate are dissolved in separate beakers of water which are then poured togehter, what is the maximum mass of bismuth sulphide an insoulble compound that could precipitate? Which reactant was the limitting reactant? Na2S + Bi...
January 8, 2010 by bobsley plz conform

How many moles of copper sulfate, CuSO4 are in a o.671 g sample? How do I start on this?
March 3, 2008 by Mark

7th grade chemistry
how is calcium sulfate is prepared?what is the chemical reaction of this.
April 14, 2010 by R.M.Sabarish

Chemisty 11 U
Determin the number of oxygen atmos in 1.75kg of potassium sulfate.
April 27, 2010 by Andy

Chemisty 11 U
Determin the number of oxygen atmos in 1.75kg of potassium sulfate.
April 27, 2010 by Andy

Chemisty 11 U
Determin the number of oxygen atmos in 1.75kg of potassium sulfate.
April 27, 2010 by Andy

how many grams of ammonium sulfate are needed to make a .25 M solution at a concentration of 6M?
May 11, 2010 by mora

what you would do to prepare 100.0g of a 3.5% solution of ammonium sulfate in water
May 13, 2010 by Anonymous

Explain how to make a 1.5M solution of copper (II) sulfate with a volume of 250 mL.
February 6, 2011 by valentina

how many grams of magnesium sulfate are required to make 575 ml of a 1.65% (m/v) solution
March 7, 2011 by jess

Describe how you could make approximately 5 g of a 3% (w/w) ferrous ammonium sulfate solution
November 8, 2011 by Wanda

What is the molarity if 750. mL of a solution containing 332.5g of copper (II) sulfate
January 18, 2012 by hannah

2.06 X 10^25 formula units of aluminum sulfate would have what mass?
February 28, 2013 by Anthony

What is the net ionic equation of the rection between zinc and copper 2 sulfate?
April 16, 2014 by laya

i was practicing some advanced level questions and i came across this one On heating with soda lime, sodium ethanoate decomposes in accordance with the following eqn CH3COONa + NaOH ----> CH4 + Na2CO3 iF 8.2g of sodium ethanoate produced 560 cm^3 of methane (at stp (...
November 15, 2006 by Kim

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

PRECIPITATION BY NaC2H3O2(aq) (a) Add 2 mL of sodium acetate solution to the test tube. (b) If a white precipitate forms at the bottom of the test tube, decant the remaining liquid into another clean test tube and retain the precipitate. (Decanting is the same as pouring, but ...
August 12, 2010 by stacy

physical science(chemistry change)
Experiment of tiratic oxilic acid wih mass 4,5g and volume of 25ml,nd concentration of 0, against volume of 14ml and 1,79mol.dm3 sodium hydoxide to determine the concentration of sodium hydroxide,,show all the working,aim,results,observation of result,discussion
June 12, 2014 by dineo

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

A nitric acid solution is neutralized using sodium hydroxide. How many grams of sodium hydroxide are needed to neutralize 5.50 L of 1.200 M nitric acid solution? HNO3 (aq) + NaOH (aq) → H2O (l) + NaNO3 (aq)
December 1, 2010 by silent

What is the PH range between 58 grams and 87 grams of Sodium Hydroxide in 6 oz by volume of water. What is the PH range of that amount of Sodium Hydroxide in 8 oz of water. I need this information to learn to make soap using wood ash.
February 28, 2011 by Jeff

The sodium and hydroxide atoms separate into ions and the positive sodium ions are attracted to the oxygen atoms and the hydroxides are attracted to positive charged part of water, the hydrogen making another molecule.
May 1, 2011 by johnny

write the following chemical equation for this equation In water,iron (III) chlroide reacts with sodium hydroxide, producing solid iron (III) hydroxide and sodium chloride? can you help me figure this out I am confused
January 26, 2009 by Ashley

Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.49 105 m/s, what energy was expended in removing the electron from the metal? Express the answer in joules (per electron) and in kilojoules per ...
November 7, 2010 by Emily

physics 2
The electric field across a cellular membrane is 1.0x10^7 N/C directed into the cell. What is the magnitude of the electric forse on the sodium ion flowing into the cell? The charge on the sodium ion is +e.
July 6, 2010 by mrs. austin

Determine the pH (to two decimal places) of a solution prepared by adding 15.9 mL of 0.0551 M sodium hydrogen oxalate (NaHOOCCOO) to 0.488 g of sodium oxalate (Na2OOCCOO). Hydrogen Oxalate pKb of 12.77 Oxalate pKb of 9.81
December 6, 2011 by Reven

caluclate the volume in mL of 1.74 grams of sodium chloride from a 0.270 M solution 1.74g sodium chloride from a 0.270 M solution 7.10g ethonal from a 2.45 M solution 6.90g acetic acid (CH3COOH) from 0.606 M solution
June 9, 2012 by April

What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate(Hint: Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.)
August 4, 2013 by Anonymous

a 15ml sample of sulfuric acid was titrated against a solution of .0100 mol per litre of sodium hydroxide. to bring about neutralization, 25.00 ml of sodium hydroxide solution was required. calculate the concentration of the sulfuric acid
January 24, 2013 by Omaaaaaaaar

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