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Fai

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Questions (112)

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. 5 answers
2. 1,560 views
I'm give the following data: Q*, QG, QH, QE for a 24-hour period, i'm required to plot these 4 data on the same graph, which
1. 1 answer
2. 573 views
Factor the following expression completely: 9x^4-81y^2
1. 1 answer
2. 377 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. 2 answers
2. 619 views
How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar
1. 2 answers
2. 616 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. 2 answers
2. 1,015 views
Calculate the PH concentrated hydrochloric acid if this solution is 24.8% HCL by weight and has a density of 1.16g/ml. I do not
1. 3 answers
2. 681 views
A prescription calls for 250ml of a 0.1N hydrochloric acid HCL solution. How many ml of concentrated hydrochloric acid are
1. 2 answers
2. 1,085 views
How much concentrated hydrochloric acid solution 36% HCL by mass d=1.18g/ml in milliliters is required to produce 11.0L of 0.296
1. 2 answers
2. 1,053 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.
1. 1 answer
2. 478 views
How many ml of terpin hydrate elixirs containing 33mg/5ml and 5mg/5ml needed to prepare 6 fl oz of an elixir containing 4mg
1. 1 answer
2. 440 views
A volume of 40.0 of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid h2so4. What was the
1. 2 answers
2. 663 views
A sample of solid monoprotic acid with molar mass equal to 169.7 g/mol was titrated with 0.1599M sodium hydroxide solution.
1. 2 answers
2. 539 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. 5 answers
2. 1,620 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. 2 answers
2. 826 views
Concentrated hydrochloric acid has specific gravity of 1.18 and 36% hcl weight. What volume of concentrated hcl must be diluted
1. 2 answers
2. 888 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. 2 answers
2. 998 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. 3 answers
2. 290 views
How to calculate PH 2.13 = 0.007M Why?Please show for me. I want you step by step for me.
1. 2 answers
2. 839 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. 3 answers
2. 625 views
Concentrated hydrochloric acid has specific gravity 1.18 and 36% hcl weight. What volume of concentrated hcl must be diluted to
1. 2 answers
2. 984 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. 415 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. 2 answers
2. 736 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. 2 answers
2. 819 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. 457 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. 4 answers
2. 1,763 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. 429 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. 474 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. 421 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. 2 answers
2. 958 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. 2 answers
2. 1,057 views
Assuming the density of a 5% acetic acid solution is 1g/ml, determine the volume of the acetic acid solution necessary to
1. 2 answers
2. 581 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. 527 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. 3 answers
2. 550 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. 2 answers
2. 582 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. 2 answers
2. 1,239 views
A 0.4671g sample containing sodium bicarbonate was titrated with HCL requiring 40.72ml. The acid was standardized by titrating
1. 5 answers
2. 3,343 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. 433 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. 2 answers
2. 560 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. 484 views
A 0.4671g sample containing sodium bicarbonate was titirated with hcl requiring 40.72ml. The acid was standardized by titrating
1. 4 answers
2. 4,045 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. 1 answer
2. 335 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. 1 answer
2. 411 views
An aqueous solution is 0.273m kcl. What is the molar concentration of potassium chloride, kcl? The density of the solution is
1. 4 answers
2. 1,572 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. 371 views
6.85ml of 0.015M SN2+
1. 1 answer
2. 242 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. 3 answers
2. 646 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. 1 answer
2. 505 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. 4 answers
2. 1,722 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. 3 answers
2. 617 views
Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that
1. 1 answer
2. 408 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. 2 answers
2. 530 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. 384 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. 1 answer
2. 356 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. 1 answer
2. 335 views
what weight of na2c03 of 95% purity would be required to neutralize 45.6ml of 0.235N acid?Who Helps
1. 2 answers
2. 548 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. 3 answers
2. 512 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. 472 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. 3 answers
2. 2,041 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. 373 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. 2 answers
2. 928 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. 3 answers
2. 597 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. 306 views
A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reactant mixture
1. 2 answers
2. 504 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. 430 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. 379 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. 428 views
A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction . After the reaction mixture containing
1. 2 answers
2. 1,186 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. 2 answers
2. 931 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. 2 answers
2. 527 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. 3 answers
2. 1,245 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. 2 answers
2. 598 views
0.50g of mixture of k2c03 and li2c03 requires 30ml of a 0.25N HCL solution for neutralization. What is the percentage
1. 2 answers
2. 1,059 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. 1 answer
2. 470 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. 1 answer
2. 374 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. 6 answers
2. 3,547 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. 2 answers
2. 560 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. 3 answers
2. 1,499 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. 2 answers
2. 863 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. 480 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. 4 answers
2. 3,391 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. 1 answer
2. 479 views
which would be the most appropriate measuring device for the following prescription: Give 0.7ml of metoclopramide syrup every
1. 1 answer
2. 365 views
Give 0.7ml of metoclopramide syrup very six hoursanwer 1 tsp oral syringe with 1 ml marking Who help
1. 1 answer
2. 351 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. 1 answer
2. 446 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. 1 answer
2. 352 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. 338 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. 415 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. 2 answers
2. 538 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. 1 answer
2. 306 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. 1 answer
2. 402 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. 1 answer
2. 421 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. 4 answers
2. 928 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. 466 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. 412 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. 4 answers
2. 1,458 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. 3 answers
2. 418 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. 1 answer
2. 470 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. 3 answers
2. 679 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. 5 answers
2. 1,972 views

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