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25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of
1. 0 answers
2. 1,045 views
you are given a solid that is a mixture of na2s04 and k2s04. A0.215g sample of the mixture is dissolved in water. An excess of
1. 0 answers
2. 507 views
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of
1. 1 answer
2. 591 views
A mixture of pure k2cr207 and pure kmn04 weighing 0.561g was treated with excess of ki in acidic medium. Iodine liberated
1. 1 answer
2. 519 views
25g of a sample of ferrous sulphate was dissolved in water contains dilute h2s04 and the volume made up to one litre. 25ml of
1. 0 answers
2. 624 views
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of
1. 0 answers
2. 584 views
A mixture of pure k2cr207 and pure kmno4 weighing 0.561g was treated with excess of ki. In acidic medium. Iodine liberated
1. 0 answers
2. 1,065 views
3.2g of a mixture of kn03 and nan03 was heated to constant weight which was found to be 2.64g. What is the % kn03 in mixture?Who
1. 2 answers
2. 601 views
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of
1. 0 answers
2. 668 views
A mixture of pure k2cr207 and pure kmn04 weighing 0.561g was treated with excess of ki in acidic medium. iodine liberated
1. 0 answers
2. 546 views
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of
1. 0 answers
2. 498 views
3.2g of a mixture of kn03 and nan03 was heated to constant weight which was found to be 2.64g. What is the % kn03 in mixturethe
1. 2 answers
2. 500 views
50gm of a mixture of ca(OH)2 is dissolved in 50ml of 0.5N hcl solution, the excess of hcl was titrated with 0.3N -naoh. The
1. 4 answers
2. 2,044 views
you need to use 3 solutions of drug H containing respectively 50%, 20% and 5% to make 600ml of 10% drug H. How much of the 50%
1. 2 answers
2. 726 views
0.224g sample that contained only bacl2 and kbr required 19.7ml of 0.1M ango3 to reach the end point. Calculate the percentage
1. 0 answers
2. 548 views
0.224g sample the contained only bacl2 and kbr required 19.7ml of 0.1M agn03 to reach the end point. Calculate the percent of
1. 2 answers
2. 474 views
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8 m Hcl. The excess of acid required 16ml of 0.25< NAOH for
1. 2 answers
2. 1,541 views
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for
1. 1 answer
2. 456 views
Determine the volume of diluted nitric acid D1.11g/ml, 19% hn03. That can be prepared by diluting with water 50ml of conc hn03
1. 1 answer
2. 515 views
Determine the volume of diluted nitric acid d= 1.11g/ml, 19% hn03. That can be prepared by diluting with water 50ml of conc.
1. 3 answers
2. 996 views
50gm of a sample of ca(oh)s is dissolved in 50ml of 0.5N hcl solution. The excess of hcl was titrated with 0.3N -naoh. The
1. 0 answers
2. 472 views
0.224g sample that contained only bacl2 and kbr required 19.7ml of 0.1M agn03 to react the end point. Calculate the percent of
1. 0 answers
2. 458 views
calculate the number of molecule h2s04 present in 250ml of 98% by mass of sulphuric solution. Density of solution is 1.84g/mlAns
1. 0 answers
2. 353 views
1.64g of a mixture of cac03 and mhco3 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for
1. 1 answer
2. 601 views
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for
1. 0 answers
2. 475 views
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for
1. 0 answers
2. 389 views
what mass of 25% ba(n03)2 solution contain 40 grams of ba(n03)2 ?Answer 160g My calculation 40g/261.37g/mol = 0.15305/0.25g =
1. 0 answers
2. 403 views
Aspirin c9h8oh molar mass = 180.1g/mol can be prepared by the reaction of salicylic acid c7h603 molar mass = 13801 g/mol with
1. 0 answers
2. 513 views
Give 0.7ml of metoclopramide syrup very six hoursanwer 1 tsp oral syringe with 1 ml marking Who help
1. 0 answers
2. 396 views
which would be the most appropriate measuring device for the following prescription: Give 0.7ml of metoclopramide syrup every
1. 0 answers
2. 404 views
0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the
1. 0 answers
2. 545 views
A 0.5g of fuming h2so4 oleum is diluted with water. This solution is completedly neutralized by 26.7ml of 0.4N naoh. Find the
1. 2 answers
2. 3,478 views
A 150mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline. 2ml of this solution was diluted to
1. 1 answer
2. 549 views
A 150 mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline 2 ml of this solution was diluted to
1. 1 answer
2. 938 views
The formula weight of an acid is 82. In a titration, 100cm3 of the solution of this acid containing 39g of this acid per litre
1. 1 answer
2. 1,602 views
0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the
1. 0 answers
2. 621 views
Find the concentration of calcium in ppm in a 3.5g pill that contains 40.5mg of ca?Answer 1.16ppm Bob helps me
1. 4 answers
2. 3,614 views
Assume that 50ml of 0.01M edta solution were added to 25ml of co solution and the excess edta required 20ml of 0.005M mg
1. 0 answers
2. 428 views
A 1.2g mixture of na2c03 and k2c03 was dissolved in water to form 100cm3 of s solution, 20cm3 of this solution required 40cm3 of
1. 0 answers
2. 574 views
0.50g of mixture of k2c03 and li2c03 requires 30ml of a 0.25N HCL solution for neutralization. What is the percentage
1. 1 answer
2. 1,117 views
0.50g of a mixture of K2c03 and Li2c03 requires 30ml of a 0.25N hcl solution for neutralization. What is the percentage
1. 1 answer
2. 701 views
25ml of a solution of na2c03 having a sepcific gravity of 1.25g solution of hcl containing 109.5g of the acid per litre for
1. 2 answers
2. 1,305 views
25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the
1. 1 answer
2. 585 views
25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the
1. 1 answer
2. 989 views
A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction . After the reaction mixture containing
1. 1 answer
2. 1,260 views
A definite amount of nh4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reactant mixture
1. 1 answer
2. 500 views
In the previous example, how many ml of 0.1M kmn04 are required to react with 30ml of 0.05M h202?the answer 3ml who helps
1. 1 answer
2. 462 views
A definite amount of nh4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reaction mixture
1. 1 answer
2. 502 views
A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reactant mixture
1. 1 answer
2. 559 views
How many grams of kmn04 are contained in 35ml of 0.05N kmn04 used in the following reaction in basic solution.the answer 0.0922g
1. 1 answer
2. 346 views
calculate the number of g fes04 that will be oxidized by 24ml of a 250N Kmn04 in a solution acidified with sulfuric acid. The
1. 1 answer
2. 681 views
80ml of hcl is added to 2.5gm of pure cac03 when the reaction is over, then 0.5gm cac03 is left. Find the normality of the acidT
1. 1 answer
2. 979 views
How many ml of 0.05M kmn04 acidic are diluted to oxidize 2gm of fes04 is diluted solutionThe answer 52.63 ml I want you step by
1. 1 answer
2. 434 views
What weight of na2co3 of 95% purity would be required to neutralize 45.6ml of 0.235n acid?I want you step by step clearly
1. 1 answer
2. 2,115 views
5ml of 8N Hn03, 4.8ml of 5N hcl and a certain volume of 17M h2s04 are mixed together and made up to 2 liter. 30ml of this acid
1. 1 answer
2. 521 views
5ml of 8N HN03, 4.8ml of 5N HCL and a certain volume of 17M H2s04 are mixed together and made up to 2 liter 30ml of this acid
1. 1 answer
2. 569 views
what weight of na2c03 of 95% purity would be required to neutralize 45.6ml of 0.235N acid?Who Helps
1. 1 answer
2. 597 views
In the previous example, how many ml of 0.1M KMN04 are required to react with 30ml of 0.05M H202? The answer 3mlWho helps
1. 0 answers
2. 394 views
In the previous example, how many ml of 0.1M KMN04 are required to react with 30ml of 0.05M H2o2? The answer 3mlwho helps
1. 0 answers
2. 446 views
calculate the molarity of H2O2 if 25ml of H2O2 required 12 ml of 0.1M KMN04?The right answer 0.24M who helps
1. 1 answer
2. 456 views
502g sample of dry cac03 and cacl2 mixture was dissolved in 25ml of 0.925 M HCL solution. What was cacl2 percentage in original
1. 0 answers
2. 586 views
Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that
1. 0 answers
2. 474 views
100 Liters of air at STP is slowly bubbled through 200ml of 0.03N Ba(OH)2 solution. The Baco3 formed due to reaction is filtered
1. 0 answers
2. 698 views
8.058g x 10-2 kg of washing soda na2co3 10h20 is dissolved in water to obtain 1L of a solution of density 1077.2kg/m3. Calculate
1. 1 answer
2. 1,803 views
10g of nacl were added to 10ml of water. the resulting solution was diluted to be a final volume of 250ml. Given the density of
1. 0 answers
2. 563 views
10g of nacl were added to 10ml of water. he resulting solution was diluted to be a final volume of 250ml.Calculate the molarity
1. 2 answers
2. 715 views
6.85ml of 0.015M SN2+
1. 0 answers
2. 290 views
A 1.252g sample containing iron is dissolved and converted to FE 2+ followed by addition of 25ml of 0.01M k2 cr2 07. The excess
1. 1 answer
2. 421 views
An aqueous solution is 0.273m kcl. What is the molar concentration of potassium chloride, kcl? The density of the solution is
1. 2 answers
2. 1,662 views
A 1.252g sample containing iron dissolved and converted to Fe followed by ADDITION OF 25ML OF 0..01m K2CR2 07. THE EXCESS
1. 0 answers
2. 462 views
A 0.200g sample containing mn02 was dissolved and analyzed by addiction of 50ml of 0.100M fe to drive the reation. The excess fe
1. 0 answers
2. 389 views
A 0.4671g sample containing sodium bicarbonate was titirated with hcl requiring 40.72ml. The acid was standardized by titrating
1. 1 answer
2. 4,165 views
A 0.682g sample of impure Na2hco3 yield a solid residue consisting of nahco3 and other solid a mass of 0.467g. What was the mass
1. 1 answer
2. 571 views
A 0.682g sample of impure NAHco3 yielded a solid residue consisting of NAc03 and other solid with a mass of 0.467g. What was the
1. 1 answer
2. 615 views
A 0.46771g sample containing sodium bicarbonate was titrated with hcl requiring 40.72ml. The acid was standardized by titrating
1. 1 answer
2. 507 views
A 0.4671g sample containing sodium bicarbonate was titrated with HCL requiring 40.72ml. The acid was standardized by titrating
1. 3 answers
2. 3,449 views
A 5g mn sample was dissolved in 100ml water. If the percentage of M (At wt =55g/mol) in the sample is about 5%. What volume is
1. 1 answer
2. 1,327 views
Find the number of mg Na2co3 FW = 106g/mol required to prepare 500ml of 9.2ppm NA solution.ppm = mg/L 9.2mg/1000ml x= 0.0092 x
1. 1 answer
2. 644 views
A solution of ethanol (C2H50H) in water is prepared by dissolving 76.9ml of ethanol (density0.79g/cm3) in enough water to make
1. 2 answers
2. 636 views
Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of
1. 0 answers
2. 613 views
Assuming the density of a 5% acetic acid solution is 1g/ml, determine the volume of the acetic acid solution necessary to
1. 0 answers
2. 648 views
A flask containing 5ml of 3M hcl solution required 14.45ml of 1M NAOH for titration. How many moles of hcl are present in the
1. 1 answer
2. 1,134 views
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
1. 1 answer
2. 1,056 views
What is the molarity of 100ml of ethanol dissolved in 1.5L of water? Ethanol has a specific of 0.789, and its molecular weight
1. 1 answer
2. 492 views
Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of
1. 1 answer
2. 539 views
A 0.446g sample of an unknown monoproctic acid was titrated with 0.105 M KOH The molar mass is 120g/mol. What is the PKA value?P
1. 1 answer
2. 487 views
What is the mass/ vol% ethanol in an ethanol water solution with density of 0.875g/ml and containing 65% ethanol by volume? The
1. 1 answer
2. 1,880 views
A 0.446g sample of an unknown monoprotic acid was titrated with 0.105M KOH the molar mass is 120g/mol. What is the pka value?My
1. 1 answer
2. 874 views
Suppose a student started with 129mg transcinnamic acid and 0.50ml of 10% bromine solution and after the reaction and workup
1. 1 answer
2. 521 views
A solution of sodium cyanide nacn has a ph of 12.10. How many grams of nacn are in 425ml of solution with the same ph?I do not
1. 1 answer
2. 813 views
How much ethanol C2H50H in liters d = 0.789g/ml must be dissolved in water to produce 190.5 of 1.65M C2H50H? Molarity problem.My
1. 1 answer
2. 483 views
Concentrated hydrochloric acid has specific gravity 1.18 and 36% hcl weight. What volume of concentrated hcl must be diluted to
1. 1 answer
2. 1,069 views
A solution of is prepared by adding 50.3ml of concentrated hydrochloric acid and 16.6ml of concentrated nitric acid to 300ml of
1. 2 answers
2. 728 views
How to calculate PH 2.13 = 0.007M Why?Please show for me. I want you step by step for me.
1. 1 answer
2. 886 views
How to calculate PH 1.9 =0.0126MI do not still understand. I want you step by step to calculate for me. Thank you.
1. 2 answers
2. 357 views
Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of
1. 1 answer
2. 1,074 views
Concentrated hydrochloric acid has specific gravity of 1.18 and 36% hcl weight. What volume of concentrated hcl must be diluted
1. 1 answer
2. 962 views
A 0.446g sample of an unknown monoprotic acid was titirated with 0.105M KOH the molar mass is 120g/mol. What is the PKA value?Wh
1. 1 answer
2. 894 views
A solution of sodium cyanide NACN has a PH of 12.10. How many grams of NACN are in 425ml of solution with the same PH?Please
1. 4 answers
2. 1,712 views
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
1. 4 answers
2. 1,672 views

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