Chemistry Chemistry Practice Problems Solutions Library

Molarity Solutions Library

Access 375 Molarity video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Molarity learn videos.

Browse Solutions

375 solutions

Molarity

Q. The following five beakers, each containing a solution of sodium chloride (NaCl, also known as table salt), were found on a lab shelf:Arrange the s...

Solved • Jul 1, 2020

Molarity

Q. If CaCl2 is dissolved in water, what can be said about the concentration of the Ca2+ ion?a) It has the same concentration as the Cl− ion. b) Its co...

Solved • Jul 1, 2020

Molarity

Q. Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10−2 M . The diluted solution is then pl...

Solved • Jul 1, 2020

Molarity

Q. What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)?The chemical 5-amino-2,3-dihy...

Solved • Jul 1, 2020

Molarity

Q. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 g of luminol into a total volume of 75.0 mL of H...

Solved • Jul 1, 2020

Molarity

Q. An experiment calls for you to use 100 mL of 0.20 M HNO3 solution. All you have available is a bottle of 3.5 M HNO3. How many milliliters of water ...

Solved • Jun 30, 2020

Molarity

Q. How many grams of solid silver nitrate would you need to prepare 220.0 mL of a 0.150 M AgNO3 solution?

Solved • Jun 30, 2020

Molarity

Q. Using modern analytical techniques, it is possible to detect sodium ions in concentrations as low as 70 pg/mL.(c) What is this detection limit expr...

Solved • Jun 30, 2020

Molarity

Q. What is the concentration of ammonia in a solution made by dissolving 3.75 g of ammonia in 120.0 L of water?

Solved • Jun 30, 2020

Molarity

Q. Using modern analytical techniques, it is possible to detect sodium ions in concentrations as low as 70 pg/mL .  (a) What is this detection limit e...

Solved • Jun 30, 2020

Molarity

Q. Your lab partner tells you that he has prepared a solution that contains 1.50 moles of NaOH in 1.50 L of aqueous solution, and therefore that the c...

Solved • Jun 30, 2020

Molarity

Q. Your lab partner tells you that he has prepared a solution that contains 1.50 moles of NaOH in 1.50 L of aqueous solution, and therefore that the c...

Solved • Jun 30, 2020

Molarity

Q. Which is more concentrated, a solution (1) prepared by dissolving 21.0 g of NaF (0.500 mol) in enough water to make 500 mL of solution or a solutio...

Solved • Jun 30, 2020

Molarity

Q. Starting with solid sucrose, C12H22O11 , describe how you would prepare 250 mL of a 0.250 M sucrose solution.

Solved • Jun 30, 2020

Molarity

Q. If you want to double the concentration of a solution, how could you do it?

Solved • Jun 30, 2020

Molarity

Q. How many moles of solute are required to make 3.0 L of a 3.0 M solution?a. 9.0 mol soluteb. 3.0 mol solutec. 6.0 mol soluted. 7.0 mol solute

Solved • Jun 25, 2020

Molarity

Q. A solution contains 0.252 g of oxalic acid, H2C2O4•2 H2O, in 500 mL. What is the molarity of this solution?

Solved • Jun 15, 2020

Molarity

Q. What volume of a 0.540 M NaOH solution contains 11.5 g of NaOH?

Solved • May 1, 2020

Molarity

Q. What are the respective concentrations (M) of Fe3+ and I- afforded by dissolving 0.200 mol FeI3 in water and diluting to 725 mL?A) 0.276 and 0.828B...

Solved • Apr 29, 2020

Molarity

Q. Which solution has the same number of moles of KCl as 75.00 mL of 0.250 M solution of KCl?A) 20.0 mL of 0.200 M solution of KClB) 25.0 mL of 0.175 ...

Solved • Apr 29, 2020

Molarity

Q. Which solution has the same number of moles of NaOH as 50.0 mL of 0.100 M solution of NaOH?A) 20.0 mL of 0.200 M solution of NaOHB) 25.0 mL of 0.17...

Solved • Apr 29, 2020

Molarity

Q. A 0.200 M K2SO4 solution is produced by _____. A) dilution of 250.0 mL of 1.00 M K2SO4 to 1.00 L B) dissolving 43.6 g of K2SO4 in water and dilutin...

Solved • Apr 29, 2020

Molarity

Q. Which one of the following is not true concerning 2.00 L of 0.100 M solution of Ca3(PO4)2?A) This solution contains 0.200 mol of Ca3(PO4)2. B) This...

Solved • Apr 29, 2020

Molarity

Q. Which one of the following is a correct expression for molarity? a) mol solute/L solvent b) mol solute/mL solvent c) mmol solute/mL solution d) mol...

Solved • Apr 29, 2020

Molarity

Q. What is the correct way to prepare a 1 molar solution of KNO3?a) Add 1 gram KNO3 to 99 grams of water.b) Combine 101.1 grams of KNO3 with 1 kilogra...

Solved • Apr 28, 2020

Molarity

Q. NaOH + KHP → NaKP + H2O (formula weight of KHP =204.2)calculate the molarity of NaOH if .0045 moles of NaOH are present in 15.66 mL of solutioncalc...

Solved • Apr 21, 2020

Molarity

Q. How many grams of NaOH are needed to prepare 500 mL of 0.125M NaOH?

Solved • Apr 21, 2020

Molarity

Q. Which of the following solutions will have the most particles present per liter?A. 0.2M KBrB. 0.1M HNO3C. 0.4M ethanol (C2H5OH)D. 0.3M K2SO4

Solved • Apr 14, 2020

Molarity

Q. A 0.15 M solution of BaCl2 contains:A) 0.15 M Ba2+ ions and 0.15 M Cl- ions. B) 0.15 M Ba2+ ions and 0.30 M Cl- ions. C) 0.30 M Ba2+ ions and 0.15 ...

Solved • Mar 25, 2020

Molarity

Q. Calculate the molarity of a solution prepared by dissolving 78.6 g of KF (molar mass=58.09 g/mol) in enough water to produce 225 mL of solution.A) ...

Solved • Feb 4, 2020

Molarity

Q. A solution is prepared by mixing 655 mL of methanol and 491 mL of water. The molarity of methanol in the resulting solution is 14.65 M. The density...

Solved • Jan 23, 2020

Molarity

Q. Calculate the molarity of an aqueous solution that is 18.2% by mass calcium chloride. You might need to know that the density is 1.18 g/mL.

Solved • Dec 12, 2019

Molarity

Q. Calculate the molarity of an aqueous solution that is 22.3% by mass calcium chloride. You might need to know that the density is 1.20 g/mL.A. 0.96B...

Solved • Dec 11, 2019

Molarity

Q. How many moles of solute particles are present in 5.04 mL of 0.796 M K2SO4? When you have the value, take its LOG (base 10) and enter it with 2 dec...

Solved • Dec 11, 2019

Molarity

Q. How many milliliters of a 0.184 M RbNO3 solution contain 0.113 moles of RbNO3?A) 885 mL B) 543 mL C) 163 mL D) 614 mL E) 326 mL

Solved • Oct 25, 2019

Molarity

Q. What is the concentration of FeCl3 in a solution prepared by dissolving 30.0 g of FeCl3 (molar mass = 162.2 g/mol) in enough water to make 275 mL o...

Solved • Oct 25, 2019

Molarity

Q. What is the concentration of nitrate ions in a solution made by dissolving 14.3 g of Fe(NO3)3 (molar mass = 241.88 g mol-1) in enough water to form...

Solved • Oct 3, 2019

Molarity

Q. Which of the following would be used to make a 0.40 M NaCl solution (NaCl mass and water volume, respectively)A. 29.2 g, 500 mL B. 58.4 g, 4.00 L C...

Solved • Oct 3, 2019

Molarity

Q. What mass of potassium carbonate (molar mass = 138.21 mol-1) is needed to prepare 450. mL of an aqueous solution with a potassium concentration of ...

Solved • Oct 3, 2019

Molarity

Q. If 308 mL of 0.148 M NaCl solution is added to 228 mL of a 0.369 M NH4NO3 solution, the concentration of ammonium ions in the resulting mixture wil...

Solved • Oct 3, 2019

Molarity

Q. Let's say we want to make 0.250 L of an aqueous solution with [NaCl] = 0.800 M. What mass of the solute, NaCl, would we need to make this solution?

Solved • Aug 25, 2019

Molarity

Q. Let's consider a solution made by dissolving 2.355 g of sulfuric acid, H 2SO4, in water. The total volume of the solution is 50.0 mL. What is the m...

Solved • Aug 25, 2019

Molarity

Q. How many mL of a 0.155 M KCl solution contain 2.55 g KCl?

Solved • Aug 2, 2019

Molarity

Q. What is the molarity of each of the following solutions?15.5 g Al2(SO4)3 in 0.250 L solution

Solved • Dec 3, 2018

Molarity

Q. Calculate the number of moles of solute present in 255 mL of 1.60 M HNO3(aq).

Solved • Dec 3, 2018

Molarity

Q. Describe how you would prepare each of the following aqueous solutions, starting with solid KBr.0.80 L of 1.6×10−2 M KBr

Solved • Dec 3, 2018

Molarity

Q. Calculate the molarity of the following aqueous solutions.0.550 g Mg(NO3 )2 in 250.0 mL of solution

Solved • Dec 3, 2018

Molarity

Q. Calculate the molarity of the following aqueous solutions.22.5 g LiClO4 3H2 O in 125 mL of solution

Solved • Dec 3, 2018

Molarity

Q. A sulfuric acid solution containing 571.5 g of H2 SO4 per liter of aqueous solution has a density of 1.329 g/cm3.Calculate the molarity of H2 SO4 i...

Solved • Dec 3, 2018

Molarity

Q. Calculate the number of moles of solute present in each of the following aqueous solutions.700 mL of 0.260 M SrBr2

Solved • Dec 3, 2018

Molarity

Q. A solution is prepared by dissolving 50.5 g sucrose (C12H22O11) in 0.404 kg of water. The final volume of the solution is 355 mL. For this solution...

Solved • Dec 3, 2018

Molarity

Q. An aqueous KNO3 solution is made using 77.6 g of KNO3 diluted to a total solution volume of 1.96 L. (Assume a density of 1.05 g/mL for the solution...

Solved • Dec 3, 2018

Molarity

Q. A solution is prepared by dissolving 20.2 mL of methanol (CH3OH) in 100.0 mL of water at 25 oC. The final volume of the solution is 118 mL. The den...

Solved • Dec 3, 2018

Molarity

Q. How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?126 mL of 0.115 M NaNO3

Solved • Dec 3, 2018

Molarity

Q. An aqueous NaCl solution is made using 126 g of NaCl diluted to a total solution volume of 1.15 L .Calculate the molarity of the solution.

Solved • Dec 3, 2018

Molarity

Q. A 500.-mL solution consists of 0.050 mol of solid NaOH and 0.13 mol of hypochlorous acid (HClO; Ka = 3.0 × 10−8) dissolved in water.(a) Aside from ...

Solved • Nov 21, 2018

Molarity

Q. Ammonium chloride, NH4Cl, is a very soluble salt in water.If you dissolve 16 g of ammonium chloride in 500.0 mL of water, what is the molar concent...

Solved • Nov 12, 2018

Molarity

Q. An aqueous solution contains 2.4 mM of total ions.If the solution is NaCl (aq), what is the concentration of chloride ion?

Solved • Oct 31, 2018

Molarity

Q. An aqueous solution contains 2.4 mM of total ions.If the solution is FeCl3 (aq), what is the concentration of chloride ion?

Solved • Oct 31, 2018

Molarity

Q. Ritalin is the trade name of a drug, methylphenidate, used to treat attention-deficit/hyperactivity disorder in young adults. The chemical structur...

Solved • Oct 31, 2018

Molarity

Q. A medical lab is testing a new anticancer drug on cancer cells. The drug stock solution concentration is 1.5 10-9 M, and 1.00 mL of this solution w...

Solved • Oct 31, 2018

Molarity

Q. Calicheamicin gamma-1, C55H74IN3O21S4, is one of the most potent antibiotics known: One molecule kills one bacterial cell.Describe how you would (c...

Solved • Oct 31, 2018

Molarity

Q. You may want to reference (Pages 145 - 148) Section 4.5 while completing this problem.Calicheamicin gamma-1, C55H74IN3O21S4, is one of the most pot...

Solved • Oct 31, 2018

Molarity

Q. You may want to reference (Pages 145 - 148) Section 4.5 while completing this problem.You make 1.000 L of an aqueous solution that contains 35.0 g ...

Solved • Oct 31, 2018

Molarity

Q. You may want to reference (Pages 145 - 148) Section 4.5 while completing this problem.You make 1.000 L of an aqueous solution that contains 35.0 g ...

Solved • Oct 31, 2018

Molarity

Q. Bronze is a solid solution of Cu(s) and Sn(s); solutions of metals like this that are solids are called alloys. There is a range of compositions ov...

Solved • Oct 31, 2018

Molarity

Q. Neurotransmitters are molecules that are released by nerve cells to other cells in our bodies, and are needed for muscle motion, thinking, feeling,...

Solved • Oct 31, 2018

Molarity

Q. Neurotransmitters are molecules that are released by nerve cells to other cells in our bodies, and are needed for muscle motion, thinking, feeling,...

Solved • Oct 31, 2018

Molarity

Q. In 2014, a major chemical leak at a facility in West Virginia released 7500 gallons of MCHM (4-methylcyclohexylmethanol, C8H16O) into the Elk River...

Solved • Oct 31, 2018

Molarity

Q. How many moles of protons are present in 36.0 mL of a 4.50 M solution of nitric acid?

Solved • Oct 31, 2018

Molarity

Q. How many milliliters of a 6.00 M NaOH solution are needed to provide 0.355 mol of NaOH?

Solved • Oct 31, 2018

Molarity

Q. Calculate the molarity of a solution prepared by dissolving 12.5 g of Na2CrO4 in enough water to produce a solution with a volume of 750. mL .

Solved • Oct 31, 2018

Molarity

Q. What is the ratio of the concentration of potassium ions to the concentration of carbonate ions in a 0.015 M solution of potassium carbonate?

Solved • Oct 31, 2018

Molarity

Q. What is the molarity of a solution that is made by dissolving 3.68 g of sucrose (C12H22O11) in sufficient water to form 275.0 mL of solution?

Solved • Oct 31, 2018

Molarity

Q. How many grams of ethanol, CH3CH2OH, should you dissolve in water to make 1.00 L of vodka (which is an aqueous solution that is 6.86 M ethanol)?

Solved • Oct 31, 2018

Molarity

Q. (a) How many grams of ethanol, CH3CH2OH, should you dissolve in water to make 1.00 L of vodka (which is an aqueous solution that is 6.86 M ethanol)...

Solved • Oct 31, 2018

Molarity

Q. One cup of fresh orange juice contains 124 mg of ascorbic acid (vitamin C, C6H8O6).Given that one cup = 237.2 mL, calculate the molarity of vitamin...

Solved • Oct 31, 2018

Molarity

Q. A strontium hydroxide solution is prepared by dissolving 10.45 g of Sr(OH)2 in water to make 53.00 mL of solution.What is the molarity of this solu...

Solved • Oct 31, 2018

Molarity

Q. Pure acetic acid, known as glacial acetic acid, is a liquid with a density of 1.049 g/mL at 25 oC.Calculate the molarity of a solution of acetic ac...

Solved • Oct 31, 2018

Molarity

Q. Glycerol, C3 H8 O3, is a substance used extensively in the manufacture of cosmetics, foodstuffs, antifreeze, and plastics. Glycerol is a water-solu...

Solved • Oct 31, 2018

Molarity

Q. In each of the following pairs, indicate which has a higher concentration of I- ion.0.10 M BaI2 or 0.25 M KI solution

Solved • Oct 31, 2018

Molarity

Q. In each of the following pairs, indicate which has a higher concentration of  I- ion.100 mL of 0.10 M KI solution or 200 mL of 0.040 M ZnI2 solution

Solved • Oct 31, 2018

Molarity

Q. The average adult human male has a total blood volume of 4.8 L .If the concentration of sodium ion in this average individual is 0.136 M, what i...

Solved • Oct 31, 2018

Molarity

Q. The concentration of alcohol (CH3CH2OH) in blood, called the "blood alcohol concentration" or BAC, is given in units of grams of alcohol per 100 mL...

Solved • Oct 31, 2018

Molarity

Q. Which will have the highest concentration of potassium ion: 0.20 M KCl, 0.15 M K2CrO4, or 0.080 M K3PO4?

Solved • Oct 31, 2018

Molarity

Q. Which will contain the greater number of moles of potassium ion: 30.0 mL of 0.15 M K2CrO4 or 25.0 mL of 0.080 M K3PO4?

Solved • Oct 31, 2018

Molarity

Q. What is the difference between 0.50 mol HCl and 0.50 M HCl?

Solved • Oct 31, 2018

Molarity

Q. Write a detailed set of instructions for making two solutions: (1) 100 mL of 16 MNaOH from solid sodium hydroxide and (2) 1.00 L of 0.1 M NaOH from...

Solved • Oct 31, 2018

Molarity

Q. Write a detailed set of instructions for making two solutions: (1) 100 mL of 16 MNaOH from solid sodium hydroxide and (2) 1.00 L of 0.1 M NaOH from...

Solved • Oct 31, 2018

Molarity

Q. Write a detailed set of instructions for making two solutions: (1) 100 mL of 16 MNaOH from solid sodium hydroxide and (2) 1.00 L of 0.1 M NaOH from...

Solved • Oct 31, 2018

Molarity

Q. What mass of KBr (in grams) should you use to make 350.0 mL of a 1.60 M solution of KBr?

Solved • Oct 31, 2018

Molarity

Q. What volume, in milliliters, of a 0.150 M solution of KCl contains 2.55 g of the compound?

Solved • Oct 31, 2018

Molarity

Q. Calculate the molarity of a solution made by adding 45.1 g of NaNO3 to a flask and dissolving with water to a total volume of 2.50 L .

Solved • Oct 31, 2018

Molarity

Q. How many grams of sucrose (C12H22O11) are in 1.50 L of a 0.771 M sucrose solution?

Solved • Oct 31, 2018

Molarity

Q. What volume of 0.220 M ethanol solution contains each of the following number of moles of ethanol?0.46 mol ethanol

Solved • Oct 31, 2018

Molarity

Q. What volume of 0.220 M ethanol solution contains each of the following number of moles of ethanol?1.23 mol ethanol

Solved • Oct 31, 2018

Molarity

Q. What volume of 0.220 M ethanol solution contains each of the following number of moles of ethanol?1.3×10−2 mol ethanol

Solved • Oct 31, 2018

Molarity

Q. Calculate the molarity of each of the following solutions.0.41 mol of LiNO3 in 6.26 L of solution        

Solved • Oct 31, 2018

Molarity

Q. Calculate the molarity of each of the following solutions.72.9 g C2H6O in 2.35 L of solution        

Solved • Oct 31, 2018

Molarity

Q. Calculate the molarity of each of the following solutions.12.21 mg KI in 107.6 mL of solution        

Solved • Oct 31, 2018