Q1/ How many, grams of potassium permanganate should be used in compounding the following prescription? • potassium Permanganate 0.02% • Purified Water ad 250.0 ml • Sig. As directed. Ans: 0.05g

Q: 650.0−g sample of river water taken near an industrial plant contains 27 mg of chromium. What is the…

A: Weight of sample or solution = 650.0 gm Weight of chromium = 27 mg = 0.027 gm (1 gm = 1000 mg)

Q: A 0.3000 g sample of impure Na2CO3 requires 36.31 mL of a 0.1075 M HClO4 solution to reach the end…

A: Molarity of HClO4 = 0.1075 M  Volume of HClO4 = 36.31 mL = 0.03631 L Mass of sample = 0.3000 g  We…

Q: What volume of 0.28 M H2SO4 can be prepared by diluting 113 mL of 5.9 M H,sO,? L

A: Intial concentration = M1 = 5.9 M  Intial volume = V1 = 113 mL  Final concentration = M1 = 0.28 M…

Q: The normality of an aqueous solution of hydrobromic acid is determined by titration with a 0.148 N…

A: Answer:- This question is answered by using the simple concept of calculation of normality of the…

Q: 7.3 g NiSO4 in 432.0 mL of solution. M

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: 8.74 g of KH2PO4 is added to a 50.6 mL solution containing 357 mmol K2SO4. The solution is then…

A: First, let's convert the mass of KH2PO4 to moles: Molar mass of KH2PO4 = 136.09 g/mol moles of…

Q: What is the normality of a solution of potassium permanganate if 50.13 mL will oxidize the weight of…

A: Given: Normality of NaOH = 0.3010 N Volume of NaOH required = 43.42 mL. And the volume of KMnO4…

Q: How many grams of solute are present in 635 mL635 mL of 0.440 M KBr?

A: The volume of the KBr solution is = 635 mL The molarity of the KBr solution is  = 0.440 M The mass…

Q: In beaker Y, a blue solution was prepared by completely dissolving 10.0 g of a non-volatile blue…

A: Concentration is defined as the mass divided by the volume the substance is dissolved in it.

Q: B The density of comm ercial concentrated HNO3 is 1-41 a /mL. The concentrated acid contains 69%…

A: Molarity :-  The number of moles of solute dissolved in one litre of solution is defined as molarity…

Q: Write a chemical equation representing the decompositionof water into two gaseous products. What…

A: The chemical equation for the decomposition of water has to be given and the products has to be…

Q: Calculate the number of grams of solutethat has to be used to make the following solution: 131.4 mL…

A: Given :- molarity of H2SO4 solution = 0.694 M volume of solution = 131.4 mL  To be calculated :-…

Q: IN action: K,S + 2 H,0 ality of a solution that contains 3.03 grams of H,S in 804 mL of solution.

A:

Q: It is desired to prepare 0.500 L of a 0.100 M solution of NaCl from a 1.00 M stock solution. How…

A:

Q: Q1. How many milliliters of aqueous 2.0 M CuSO, must be added to prepare 90 ml. of aqueous 0.1 M…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: How many grams of solid KCl are needed to prepare 250.0 mL of 0.235 M solution? A) 31.3g B) 15.6g…

A:

Q: What mass of sodium chloride and what volume of water are needed to prepare 5.00*102 mL of a .89% by…

A: The question is based on the concept of solution preparation. mass percentage is defined as amount…

Q: What is the molarity of 1 kg of KNO3 (MW=101.11g) dissolved in 2.75 L of solution?

A: Molarity is the number of moles of solute present in one liter of solution. It is represented by M.…

Q: How many grams of solute are contained in each solution in 330 mL of a 0.34 M NaNO3 solution?

A:

Q: You need to make 841 mL of a 838 mM solution of a compound with FW 457.71. How many grams of the…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: How many grams of KMnO4 are required to make 250mL of 0.020M KMnO4 solution?

A: Volume of KMnO4 solution V = 250 mL Concentration of KMnO4 solution (C) = 0.020 M We have to…

Q: How many grams of al2so4.18h2o should be weighed for a 25 mL solution to contain 7% Al(III)?

A: The question is based on concepts of solution. we have to estimate how much the salt need to be…

Q: How much silver nitrate (in grams) must be used in preparing 600 mL of a solution such that 20 mL…

A:

Q: solution? How many grams of H2S(aq) are needed to make 5.00 L of a 0.125 M H,S(a0) 13.63g O 21.3 g…

A: Given :- Molarity (M) = 0.125 Volume = 5 L Mass of the H2S (aq) we have to find out Molarity = it is…

Q: 7. How many Liters of 18.0M H2SO4 are required to prepare 1.0 L of a 0.900 M solution ?

A: The given problem relates to stock dilution, so we can use the below relation to calculate the…

Q: Drain unclogging agent is prepared from NaOH dissolved in water. How many grams of NaOH is needed to…

A: Concentration of the NaOH solution needed = 2.5 M Volume of NaOH solution needed = 500 mL Molarity…

Q: Determine the mass of Na2S2O3.5H2O required to prepare 0.1N solution in 50 ml volume.

A: Given Normality of solution = 0.1 N  Volume ( V ) = 50 mL                       = 0.050 Liter…

Q: For the following reaction: H3PO4 + 3 KOH  K3PO4 + 3 H2O Calculate the normality of a solution…

A:

Q: A solution of permanganate contains 2.608 grams of KMnO4 per 750 mL. What is the normality of the…

A: Given the mass of KMnO4 = 2.608 g  Molar mass of KMnO4 = 158.034 g/mol => moles of KMnO4 = 2.608…

Q: 4.0050 g sample of chlorinated lime was mixed with enough water to make 1000 mL. A 100 mL sx of the…

A: Find the availble chlorine content of chloronated lime

Q: 3. How would you prepare 350 mL of 0.500 M CaCl₂ from a 2.00 M CaCl₂ solution?

A: Given : volume of dilute solution = 350 mL              Conc.  of CaCl2 in dilute solution = 0.500M…

Q: What molarity of HCl stock solution is needed so that 12.5 mL of this stock solution diluted to…

A: Note: 1000 mL = 1 L 1000 mM = 1 M Given, Stock solution of HCl: Molarity of HCl solution (M1) = ?…

Q: 1.0 Liter of a solution of hydrochloric acid was made from diluting 25 ml. of 12.0 Mhydrochloric…

A: Dilution of the stock solution:When we dilute a concentrated solution with pure water, the mole of…

Q: How many grams of solute are present in 885 mL885 mL of 0.220 M KBr?

A: Molar mass of KBr = 119.002 g/mol.

Q: What volume of glacial acetic acid (17.6 N or 17.6 M) would be required to prepare 100 ml of a 0.2 M…

A: Answer: To dilute a stock solution water gradually added in it and addition of water only changes…

Q: How many grams of solid K3Fe(CN)6 (Mw = 329.2 g/mol) will be needed to prepare 532 mL of 0.0692 M…

A: Grams of CN- = molarity × volume × molar mass of CN- Grams of CN- = 0.0692 M × 0.532 L × 26 gmol-…

Q: You have a selution.containing 135-29 of waiter. what volume of this solution, in mi, would to make…

A: Mass of KBr=135.2 g Molar mass of KBr=119 g/mol The volume of the solution=2.3 L Moles of…

Q: 3. How many grams of K3PO4 are present in 200 mL of 1.2 M K3PO4 solution?

A: Given: Volume = 200mL = 0.2L Molarity= 1.2M To find: The mass of K3PO4

Q: Most commercial samples of K MnO contain some manganese dioxide that must be femoved prie Submit…

A: Oxidation is said to be loss of electrons and reduction is gain of electrons. Oxidizing agent…

Q: 2.000 g TUMS tablet (CaCO3 and Binder) was analyzed in a lab. 11.42 mL of 0.871 M HCI was needed to…

A: Given :  Mass of TUMS Tablet = 2.000 g  Volume of HCl solution = 11.42 ml  Molarity of HCl solution…

Q: Whats the mass of KIO3 that will consume 350 ml of .1 M Na2S2O3?

A: Molarity is a term used for concentration which shows the moles of solute dissolved per liters of…