September 1, 2014

Search: sodium sulfate + strontium nitrate

Number of results: 4,410

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate? (: Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.)
April 5, 2011 by stephen

WHAT IS A CHEMICAL WITH A HIGH PH? A saturated solution of sodium hydroxide has a very high pH. IS SODIUM HYDROXIDE ALKALINE VERY
January 31, 2007 by Anonymous

Why can a buffer be created by the addition of sodium hydroxide to acetic acid, but not from the addition of sodium hydroxide to hydrochloric acid?
March 4, 2012 by Lindsey

Can someone please help me with these? Write formulas for the following compounds. copper (III) chlorate lead (II) nitrate Cu(ClO3)3 Pb(NO3)2 Do you know the polyatomic ions? Tell us what you don't understand about looking at the periodic table and doing these; perhaps we can ...
February 13, 2007 by Florencia

Sodium intake can be controlled by A. carefully reading labels of processed foods. B. choosing frozen dinners over fast foods. C. keeping a blood pressure level higher than 140 over less than 85. D. increasing your intake of water to balance the sodium in your bloodstream. am ...
September 16, 2008 by AK

Write Skeleton equations for these reactions. A) Heating Copper(II) sulfide in the Presence of diatomic oxygen produces pure copper and sulfur dioxide gas. B)When heated, baking soda (Sodium hydrogen carbonate) decomposes to form the products sodium carbonate, carbon dioxide, ...
February 28, 2010 by Jack

Aluminum bromide and sodium hydroxide react to form aluminum hydroxide and sodium bromide. a.)How many moles of sodium bromide can be formed from 1.55 moles of aluminum bromide? b.)How many moles of aluminum hydroxide may be formed from 4.65 moles of sodium hydroxide?
November 3, 2013 by Kelsi

Gen. Chem
To make a solution with a pH = 4.40 a student used the following procedure : a certain amount of sodium acetate along with 0.280 moles of acetic acid is added to enough water to make a solution of 1.00 L How many grams of sodium acetate were added ? Ka = 1.80 x 10 -5
March 22, 2010 by Rinzin

The total volume of seawater is 1.5 times 10 to the twenty- first power L. Assume that seawater contains 3.1 percent sodium chloride by mass and that it's density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. ( 1 ton = 2000 lb. ; 1 lb. = ...
August 25, 2012 by Brooklynn

Is this balanced correctly NaOH + H2SO4 = Na2SO4 + H2O? In this equation, Sodium (Na) and Hydrogen (H) atoms are not balanced. There are 2 atoms of Sodium (Na) on Right Hand Side, so we can multiply NaOH with 2 on Left Hand Side. This balances the Sodium (Na) atoms. Now, ...
July 11, 2014 by duane

Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a desired pH of 4.00? The starting concentration of the benzoic acid is 3.00 M and the molecular weight of sodium benzoate is 144.10 g/mol.
April 10, 2011 by Nadine

Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a desired pH of 4.00? The starting concentration of the benzoic acid is 3.00 M and the molecular weight of sodium benzoate is 144.10 g/mol
April 10, 2011 by Mike

1.predict and expalain the order of melting point for propanol, butane, and proanone with refernce to their intermolecular forces. 2. The element sodium, aluminum, silicon, phosphrous, and sulfur are in periods 3 of the periodic table. Decribes the metallic bonding present in ...
February 26, 2010 by Richard

when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
March 8, 2010 by stocihs hard

when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
March 8, 2010 by stocihs hard

when heated, sodium bicarbonate, NaHCO3, decomposes into sodium carbonate, Na2CO3, water, and carbon dioxide. If 5.00 g of NaHCO3 decomposes what is the mass of the carbon dioxide produced?
March 8, 2010 by Kay

organic chemistry
in a reaction with 9-fluorenol and sodium hypochlorite (with acetic acid) that is supposed to yield 9-fluorenone, what could be a possible reason for error if the solution of 9-fluorenol, sodium hypochlorite, and acetic acid was heated too high? (around 80 degrees if the ...
February 12, 2009 by Anonymous

7th grade chemistry
how is potassium sulfate prepared?explain with chemical reaction.
April 14, 2010 by R.M.Sabarish

What is the concentration of each type of ion on a 0.010 molar solution of Lithium sulfate (aq)?
September 15, 2010 by Alphonse

Find the volume in liters of 0.452 M manganese(II) sulfate that contains 54.5 g of solute?
September 19, 2010 by Megan

How many grams of water are present in 0.500 moles of calcium sulfate hemihydrate?
March 22, 2011 by Talisa

How many grams of copper sulfate is needed to make 1125L of 25 ppm solution
January 2, 2012 by tracey

If 2.0 mL of 0.80M copper (II) sulfate and 8.0 mL of water are mixed, what is the concentration of the resulting solution?
March 1, 2012 by roger

What is the balanced equation for copper (II) sulfate pentahydrate and potassium oxalate monohydrate?
July 6, 2012 by Zach

How many moles of magnesium sulfate are needed to make in a solution of 0.10g Mg2SO4?
February 26, 2013 by Rena

How many moles of sulfate ions are in 100 ml of a solution of .002 M Fe2(SO4)3?
March 19, 2013 by Moyer

How much copper 2 sulfate do you need to react with 0.5grams of steel wool?
March 19, 2014 by April

Chemistry pls clearly step step for me
2gm of mixture hydrated sodium carbonate 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 naturalization. calculate the percentage of sodium ...
June 21, 2014 by ken

If 40 milligrams of strontium-90 radioactively decays to 12 milligrams in 30 years, find its half-life (the number of years it takes until half of it remains). Use the formula A = p ⋅ e−kt, where p is the amount and A the (smaller) final amount.
March 26, 2014 by Kimberly

which would be the best anwser here? my guess was D but i wanna be sure Ammonium nitrate is sometimes used as a high explosive which reason best explains this? A)extremely water soluble B)contains ammonium ions C)excellent commerical fertlizer D)contains nitrogen in both its ...
April 22, 2007 by chem gurl

The fizz produced when an alka-seltzer tablet is dissolved in water is due to the reaction between sodium bicarbonate and citric acid: 3NaHCO3 + H3C6H5O7 -> 3CO2 + 3H2O + Na3C6H5O7 In an Experiment 1.00 g of sodium bicarbonate and 1.00g of citric acid are allowed to react? ...
October 20, 2013 by Lu

Baking soda is sodium bicarbonate (NaHCO3). When you heat baking soda, it breaks down into sodium carbonate powder (Na2CO3), water vapor, and carbon dioxide. The enthalpy of this reaction is 129 kJ. a. Write a correct, balanced thermochemical equation for this reaction. (...
April 16, 2014 by Anonymous

Chemistry I
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: In order to measure the ...
November 1, 2011 by Lindsey

chem 2
a buffer is to be prepared by adding solid sodium acetate to 0.10M CH3COOH. Which othe following concentrations of sodium acetate will produce the most effective buffer? A. 3.0M CH3COONa B 2.5M CH3COONa C 2.0M CH3COONa D 1.5M CH3COONa E .30M CH3COONa HELP
March 3, 2012 by Noah

what is nitrate production?
September 15, 2008 by Anonymous

What is the pH of 0.1 M formic acid solution? Ka=1.7e10-4? What is the pH value of buffer prepared by adding 60 ml of 0.1 M CH3COOH to 40 ml of a solution of 0.1 M CH3COONa? What is the pH value of an acetate buffer (pK=4.76) prepared by adding 20 ml of 1 M HCl to 100 ml of a...
December 11, 2011 by alshammari

how do you know if a solid can be a hydrat given the mass before and after heating? if a solid before heating has a molar mass of 208 g/mol and a formula of XY, what is the formula of the hydrate? some cracker tins include a glass vial of drying material in the lid. this is ...
March 9, 2008 by ashley

a ray of light (f = 5.09 x 10^14 Hz) traveling in air strikes a block of sodium chloride at an angle of incidence of 30 degrees. What is the angle of refraction for the light ray in the sodium chloride?
June 15, 2010 by Anonymous

Chemistry (stoichiometry)
18.5 grams of calcium chloride reacts with 25.7 grams of sodium phosphate and produces calcium phosphate and sodium chloride. What is the limiting reactant? (show work)
March 7, 2012 by Hannah

If 90 mL of laundry bleach containing a 5.0% w/v concentration of sodium hypochlorite is recommended per load of laundry, what mass of sodium hypochlorite is being used per load?
April 26, 2012 by cody

Pages: <<Prev | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | Next>>