dilution create 500 ml of 1.5M HCl from a stock solution with a concentration of 12M

40,935 results, page 8

chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na_3PO_4, for a laboratory experiment. How many grams of Na_3PO_4 will be needed to produce 550 mL of a solution that has a concentration of Na^+ ions of 0.500 it M?

chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 500 mL of a solution that has a concentration of Na+ ions of 0.700 M

Chemistry

I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M. a) What is the concentration of B2- ions? b. What is the concentration of A1+ ions? c. What is the solubility product constant for A2B? Can you ...

College Chemistry

What is the pH of the following solutions? 1)a solution that is 5.4×10−2 M in HClO4 and 3.0×10−2 M in HCl 2)a solution that is 1.80% HCl by mass (Assume a density of 1.01g/mL for the solution.) Please help! I am so confused!

Chemistry

a 20.0ml sample of HCL solution is placed in a flask with a few drops of indicator. If 30.0ml of a 0.240 M NaOH solution is needed to reach the endpoint, what is the molarity of the HCL solution?

Chemistry

How do I calculate the amounts of Na2SO4 and CaCl2 that I need to create a solution of CaSO4 at 9 grams/Liter concentration?

Chemistry

Sorry DrBob22, I wasn't sure if you saw my last post. But, I am still a little confused. Here's the info: Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL 3.Milliomoles of HCl ...

Math

At the end of the first quarter of 2006, all the major stock market indexes had posted strong gains in the past 12 months. Mass Mutual Financial Group credited the increases to solid growth in corporate profits. The mean one-year return for stocks in the S&P 500, a group of ...

analytical chemistry

Calculate the concentration of the initial nitrate stock solution (in ppm) if exactly 0.361 g of KNO3 is dissolved in a 1 L volumetric flask with distilled water.

Chemistry

Please help, I can't do this and its stressing me out ?!?! A 25.0 mL aliquot of an aqeuous quinine solution was diluted to 50.0mL and was found to have an absorbance of 0.832 at 348nm when measured in 2.00cm cell. A second 25.0mL aliquot was mixed with 10.0ml of a solution ...

Chemistry

How do I find the rate law? I did a iodine clock lab but i am having trouble finding the rate law equation as well as the slow and fast reactions. I used these materials: Solution 1 o 1.0 grams Starch o 10.0 mL of Acetic Acid o 4.1 grams of Sodium Acetate o Sodium Iodide 1, 2...

chemistry

A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.

chemistry

A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000 103 mL. The concentration of the final solution is 0.00421 M. Calculate the concentration of the original solution.

Chemistry

When 50 mL of 1.0 M AgNO3 is added to 50 mL of 0.50 M HCl, a precipitate of AgCl forms. After the reaction is complete, what is the concentration of silver ions in the resulting solution? (a) 0.50 M (b) 1.0 M (c) zero (d) 0.25 M (e) 0.75 M How do I go about solving this? I ...

AP Chemistry

A given weak acid HZ has a Ka=1.7×10−6. What is the H3O+ concentration of a solution of HZ that has a concentration of 0.78 mol/L? What is the pH of this solution of HZ? What is the percent ionization of HZ in this solution? Answer in units of %

Chemistry

How do the following solutions show the properties of a buffer? 1) 50 ml 0.10 M NH3 + 50 ml 0.10 M NH4NO3 2) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M HCl 3) 10 ml solution #1 + 6 ml 0.10 M HCl 4) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M NaOH

Chemistry

The cell Pt|H2(1 bar)|HCl(m)|AgCl(s)|Ag has an Stadard elctrode potential value of 0.2224V at 298K Using the Nernst equation, calculate a value for the EMF when the HCl concentration is 0.20M. I know what the Nernst equation is but I am unsure how to use it when I only have ...

Chemistry

HCl is a gas at room temperature and does not conduct electricity. Yet when dissolved in water, the solution becomes an excellent conductor. Classify HCl as metallic, ionic, molecular or covalent network, and explain why HCl would conduct electricity in an aqueous solution.

Chemistry

A 25.00 mL sample of KNO3 solution was diluted to 1.00X103 mL. The concentration of the final solution is 0.00383 M. Calculate the concentration of the original solution?

Science

25 mL sample of KNO3 solution was diluted to 1.000x10^3 mL. The concentration of the final solution is .00383 M. Calculate the concentration of the original solution

chemistry exercises

The concentrated H2SO4 of 155g dissolved in enough amount of water if acidic solution is 2.3L a) what is the mole of H2SO4 b) what is the concentration H2SO4 c) what is the concentration of H+(H3O+) created in the solution d) what is the PH value of solution e) what is the ...

Chemistry

A 3 M HCL solution was used to generate the Co2 from the CaCO3. What would be the effect of substituting 6 M HCL for 3 M HCL? Explain

Chemistry

How many ml of HCl required to prepare 5% of HCl solution in 750ml water.if HCl is 36% pure and specific gravity is 1.18g/ml?

chemistry

The titration of HCl with NaOH is represented by the equation HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) What volume of 0.100 M HCl is required to titrate 50.0 mL of 0.500 M NaOH?

chemistry

what volume of a 0.34M MgCI2, solution is required to make 250ml of a 0.10M solution by dilution?

chemistry

What volume of a 0.34M MgCL2 solution is required to make 250ml of a 0.10M solution by dilution?

chemistry

Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.335-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?

Chemistry

Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.970-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?

AP Bio (but its a question about chemistry)

no idea how to do this... describe how you would prepare from the specified stock solution: 400 mL of 0.45 M urea starting with a 6 M urea stock solution

Science/Chem

1. You dissolve 157.1 g of ammonium nitrate in a 250 mL volumetric flask and add water to the mark (call this solution A). You take 30 mL of solution A and place it in a 100 mL volumetric flask and add water to the mark (this is solution B). Next you take 50 mL of solution B ...

science/chem

You dissolve 157.1 g of ammonium nitrate in a 250 mL volumetric flask and add water to the mark (call this solution A). You take 30 mL of solution A and place it in a 100 mL volumetric flask and add water to the mark (this is solution B). Next you take 50 mL of solution B and ...

ChemistryDrBob222

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....

Business

Based on this financial info where a company's Beta Year = 2008, the Company's commons stock = 0.85, the Risk-Free Rate of Return = 5%, and the Market Risk Premium = 6%. Use the dividend growth model to calculate the Company's Common Stock in 2008. Stock 1 = 1.5, Stock 2 = 0....

chemistry

calculate kole fraction of hcl in solution of hcl contaning 24.8% of hcl by mass

Chemistry

You wish to prepare 0.18 M HNO3 from a stock solution of nitric acid that is 18.9 M. How many milliliters of the stock solution do you require to make up 1.00 L of 0.18 M HNO3? Answer and..... HOW DO I DO IT?

chemistry

you must prepare 300 mL of .750M NaBr solution using 2M NaBr stock solustion. how many mL of stock solution should you use?

chem

calculate the concentration of all ions present in 58.7 mg NH4Br in 500 mL of solution

science

When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass? 4.8% NaBr 5.5% NaBr 5.8% NaBr 6.2% NaBr

SCIENCE

When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass? 4.8% NaBr 5.5% NaBr 5.8% NaBr 6.2% NaBr

chem

When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass? 4.8% NaBr 5.5% NaBr 5.8% NaBr 6.2% NaBr

science

When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass? 4.8% NaBr 5.5% NaBr 5.8% NaBr 6.2% NaBr

Chemistry

A solution has a pH of 2. How does the pH change if 1 mL of the solution is diluted to 100 mL with pure water? How does the pH of a solution with pH 10 change under the same dilution?

Chemistry

What is the H+ ion concentration of this solution? A solution is made by dissolving 0.0112 g KOH in enough water to make 1.0 liter of solution. What is the H+ ion concentration of this solution? a. ) 2.0 x 10-3 M b. ) 8.0 x 10-2 M c. ) 1.2 x 10-13 M d. ) 5.0 x 10-11 M e. ) 5.0...

chemistry

a 30.0 ml solution of potassium nitrate was diluted to 125 ml and 25 ml of this solution were then diluted to 150 ml. the concentration of the final solution is 0.00307 M. Calculate the concentration of the original solution.

chemistry dilution

Given VLP with concentration 200ug/mL, dilute to 3ug/100ul. Please help me with this; many thanks

Chemistry

Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.890-g sample of Mg metal is added to 125.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?

Chemistry

Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.890-g sample of Mg metal is added to 125.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?

Chemistry (Acid&Base)

How many mL of 0.203 M HCl(aq) are required to prepare a diluted solution that has a concentration of 0.0433 M in a 100-mL volumetric flask?

Chemistry

In a titration 100 mL of 3.65 g HCl is added to 200 mL of BA(oh)2 solution of an unknown concentration until the equivalent point find molarity of ba(oh)2

GENERAL CHEMISTRY CALCULATION

preparing working solution of the disinfectant Osyl from the stock solution requires diluting the stock one part Osyl to five parts water .this is V/V solution .in this situation you have 250ml of water so the question is:HOW MUCH OSYL IS NEEDED?

Chemistry

hey guys can you please help me with this question. Identify the steps required to standardize a 0.1M HCl stock solution with sodium carbonate: Na2CO3, mol wt. = 105.99 g/mol. thank you

chemistry

To create a 0.1 M carbonate buffer pH = 10.2. You choose to use a combination of HCO3- / CO32-. This buffer system has pKa = 9.9.   a) Calculate how much you need to weigh in each of the sodium salts, NaHCO3 and Na2CO3, to create 1.0 L carbonate (with total concentration of ...

Chemistryyy

a) A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid? b) A 0.150 M sodium chloride solution is referred to ...

Chemistry

If 455-ml of 6.0 M HNO3 is used to make a 2.5 L dilution,what is the molarity of the dilution?

Chemistry

You wish to prepare 0.18 M HNO3 from a stock solution of nitric acid that is 18.9 M. How many milliliters of the stock solution do you require to make up 1.00 L of 0.18 M HNO3?

AP Chemistry

1. The heat of solution of salta may either be endothermic or exothermic. What factors determine this? 2. As a solution freezes, why does the freezing temperature continue to decrease? 3. When the concentration of very dilute aqueous solutions are calculated, why are the ...

chemistry

A flask containing 5.00ml of 3M hcl solution required 14.45 of 1.00M naoh for titration. How many moles of hcl are present in the solution? The density of 3M hcl is 1.05g/ml. My calculation 0.005L x 3M = 0.015 moles 0.01445 x 1m = 0.01445 moles Who helps me to solve it

Chemistry II

What volume of .100 M NaOH will react completely with 21.00 mL of .500 M HCl? Vb*ConcBase= Vacid*ConcAcid Solve for Vb. 21.00 mL x .500 M HCl = 1.05e1 1.05e1 / .100 M NaOH = 1.05e2 right.

chemistry

What volume of 12M HCl must be diluted to make 2L of solutioin with a pH of 4?

Chemistry

How would a student make 500.0 mL of a 0.08500 M solution of iron(III) using a stock solution that is 0.3180 M in iron(III)? Explain how this would be done.

chemistry

What volume of a concentrated hcl solution which is 36% by mass and has a density of 1.179 g/ml to make 4.85L of an hcl solution with ph of 1.9? Who helps me to solve it for me.

chemistry

anyone help me . .what volume of concentrated HCL solution whoch is 36% by mass and has a density of 1.179 g/ml , should be used to make 4.7 L of hcl solution with a pH of 1.8 ?

Chemistry- Drbob-help#3

I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A student makes a solution...

chemistry

what is the molarity of a HCl solution that contains 13.0 g of HCl in 125 mL of solution? Answer in units of M is it 3791.944 ?

Chemistry

Describe in words how you would make a 1.00 M solution of HCl from a 5.00 M solution of HCl. Completely stumped here. Any help?

CHEMISTRY

A solution of H2SO4(aq) with a molal concentration of 1.94m has a density of 1.119g/mL. What is the molar concentration of this solution? I got an answer of 2.17 M and it is incorrect..please help. My work: So Molar concentration = molal concentration * density = 1.94 mol/kg...

college chemistry

A 0.300 g sample of an aspirin tablet is used to prepare 100.0 mL of a stock solution by dissolving the tablet in 1 M NaOH then diluting with distilled water to the 100 mL mark of a volumetric flask. A 0.30 mL sample of the stock solution is then transferred to a volumetric ...

Science

We conducted an expirement to detect disulphide groups in protein. One tube(lysozyme) contained unkowns, had approx 9.34 micromoles of disulphide groups. The question asks me to work backwards through all the dilution factors taken to give number of micromoles of disulphide ...

Chemistry

We conducted an expirement to detect disulphide groups in protein. One tube(lysozyme) contained unkowns, had approx 9.34 micromoles of disulphide groups. The question asks me to work backwards through all the dilution factors taken to give number of micromoles of disulphide ...

chemistry2

Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

chemistry

If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution, what is the molarity of the solution? [Use molecular weight: HCl, 36.46 amu]

chemistry

You have 26.44 mL of 1.83 M HCl in a beaker. You dilute this acid with 40.08 mL of water. When you analyze the solution you find that the number of moles of HCl in the new solution is

Chemistry

You have .8 liters of a 0.5M HCl solution. If you use this solution to complete a decomposition reaction of HCl how many moles of hydrogen (H2) would be produced?

chemistry

describe how you would prepare from the specified stock solution: 400 mL of 0.45 M urea starting with a 6 M urea stock solution

Chemistry

1. In order to make 250mL of a 0.100 M HNO3 solution from a 15.9 M stock solution, then _____mL if the 15.9 M stock HNO3 solution is needed. M1V2=M2V2, solve for V2. (0.100M * 250mL)/ 15.9M = 1.6mL V2-V1=V 1.6mL-250= -248.4 Did I do this correctly?

Chemistry

Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) If 2.00 g of Mg reacts completely with 50.0 mL of HCl solution, what is the molarity of the HCl solution?

Physical Chemistry

One potential problem with using molarity to express concentration is that molarity is temperature dependent. If you make a 1.000 M solution of aqueous HCl at 25 degrees celsius, what would the molarity of this solution become if the temperature of the solution is elevated to ...

chemistry

Describe how you would make 500.0mL of a 0.200M NaOH solution from a 15.0 stock NaOH conentration

CHEM

how many milliliters of a stock solution of 6.0 m hno3 would you have to use to prepare 110mL of 0.500 M HNO3?

Chem I

Ok here is another one! Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of ALL ions present in a solution prepared by pipetting 5.00mL of concentrated HClO4 into a 1000.0-mL volumetric flask and filling to the mark. Also calculate the pH ...

Chemistry

1. What does 'the time taken to reach completion decreases if 20cm^3 of hcl containing 4mol/dm^3' means? How to work out to find the concentration? 2(a)What does concentrated hcl means? (b)What does dilute hcl means? Which will react faster or slower / a or b? Thanks sooooo ...

Chemistry

How many grams of KF do you need to weigh in order to prepare 500. mL of solution with a concentration of 0.250 M?

Chemistry

500 mL of water is added to 25 mL of 6.0 M hydrochloric acid. What is the final concentration of this solution in mol/L?

chemistry

how to calculate molar concentration of a 500 millimeter solution that contains 20 gram of CaBr2 ?

Chemistry

Help needed with a calorimeter lab. I have to measure the enthalpy of a neutralization reaction between NaOH and HCl as well as find the concentration of NaOH the following ways. - using the mass and volume of NaOH - Using calorimetric data assuming no heat lost to calorimeter...

chemistry

When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower concentration. b.)The...

chemistry

When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower concentration. b.)The...

chemistry urg!

Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

chemistry

Calculate the pH of the buffer system after the addition of 0.1 mol of gaseous HCl of the solution. Assume that the volume of the solution does not change when the HCl is added.

chem

Water is the solvent and you can assume the density of water is 1.0g/cc. a.) What will be the amount of solute in grams if the volume is 500 mL and the concentration of solution is 15% w/w? The molar mass of the solute is H2SO4, 98.0g/mol b.) What is the molar mass of the ...

Chemistry

If 0.10 mol of Zn(s) is reacted to 150.0 ml of 1M HCl, what is the concentration of Zn+2 in the solution after the reaction is complete? Assume the solid zinc does not affect the volume.

math

Solution Dilution question: An order for 25mg of a oral solution is needed. You have 1000g and a 30ml bottle to make the solution. How many ml will you need for 25mg of the finshed oral solution. So once the solution is made, I will need to get 0.75ml out which = 25mg Is that ...

Are these correct?

A) How do you make 200 mL of a 0.1 M solution of a substance that has a molecular weight of 121.1 g/mol? Answer I got: 200mL = 1/0.1M x 1/(121.1g/mol) x mass of the substance. mass of the substance = 0.2L x 0.1M x 121.1g/mol=2.42g Note that my answer doesn't reveal how to do ...

chemistry

50.0 mL of a solution of HCl is combined with 100.0 mL of 1.15 M NaOH in a calorimeter. The reaction mixture is initially at 22.4°C and the final temperature after reaction is 31.2°C. What is the molarity of the HCl solution? You may assume that there is an excess of base (...

Chemistry

To what volume must 1580mL of 0.2005 N solution be diluted so that the resulting solution will be 0.1899 M? How much water will be needed in the dilution?

Chemistry

The following two solutions were combined and mixed well: 150.00 mL of a 3.500 M iron(¡¡¡) nitrate solution and 760.00mL of a 1.600M magnesium nitrate solution. 20.00mL of the final solution was transferred with a pipette into an empty 250.00mL volumetric flask. It was made...

Chemìstry

The following two solutions were combined and mixed well: 150.00 mL of a 3.500 M iron(¡¡¡) nitrate solution and 760.00mL of a 1.600M magnesium nitrate solution. 20.00mL of the final solution was transferred with a pipette into an empty 250.00mL volumetric flask. It was made...

Chemistry

Equal volumes of 1 M BaCl2 and 1 M NaSO4 are mixed. What effect will the addition of more Na2SO4 solution have on the concentration of Ba^2+ remaining in solution? *No effect *increase the concentration of Ba^2+ ions *Decreases the concentration of Ba^2+ *Ba^2+ will remain the...

chemistry

How would I calculate the molarity of the resulting solution if 25.0mL of 1.50 M HCL solution is diluted to 500 mL. I know you have to change the milliliters to liters by dividing by 1000 and I know that M= Moles of Solute/Liters of Solute but after that I'm lost. Please help!

chemistry

if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl

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