65 Answered Questions for the topic Molarity

03/01/22

CONCENTRATION OF SOLUTIONS CHEMISTRY (MOLARITY)

What is the molarity of a solution that contains 25 g of KOH in 250 mL of solution?  What is the mole fraction of sulfuric acid (H2SO4) in 8% aqueous H2SO4 solution?

02/28/22

A certain mass of an unknown third period metal hydroxide reacts with an certain volume and concentration of a diprotic acid. How do I figure out the identity of the metal?

I used dimensional analysis and the molarity of the acid to find the moles of the acid, then multiplied it by the 1:2 stoichiometric ratio since it's a diprotic acid. This gave me the moles of the... more

01/29/22

Chemistry moles, molecules, ions, and molarity question

A solution containing 50.8 g of sodium sulfate in a volume of 0.558 L was prepared. Calculate the number of moles of sodium sulfate in this solution. Calculate the number of molecules of sodium... more
Molarity Chemistry

01/26/22

What is the molarity of 5.15 g Mn(NO3)2⋅2H2O in 175 mL of solution

I'm not sure what I'm supposed to do with the 2H2O. Does it get included with the molecular weight when you convert from grams to moles?

Chemical Equilibrium and Calculating Initial Concentration.

How do you calculate the initial concentration?I am a college student, and I've been told finding it is easier than how I make it out to be.Here's exactly what it says in my lab:"Find the initial... more

How to find amount of water needed in dilution?

What volume of 0.75M potassium hydroxide solution is needed to make 350 mL of a 0.15 M solution? Approximately what volume of water is also needed?I got a volume of 70. mL KOH, but how do I find... more

How to find amount of water needed in dilution?

What volume of 0.75M potassium hydroxide solution is needed to make 350 mL of a 0.15 M solution? Approximately what volume of water is also needed?I got a volume of 70. mL KOH, but how do I find... more
Molarity Chemistry

04/19/21

Find the molarity of 1.15 g KF in 150 mL of water

Molarity Chemistry Density Ppm

03/21/21

What is the millimolar concentration of sulfate ion?

A sample contains an average of 3.98 x 10^3 ppm sodium ion and 271 ppm sulfate ion. What is the millimolar concentration of sulfate ion in this sample if the average density of the solution in the... more
Molarity Chemistry Chem

02/19/21

What is the concentration of Cu^{2+} in the resulting solution?

23.6 mL of 0.141 M copper(II) sulfate reacts with 15.9 mL of 0.114 M sodium hydroxide to form a precipitate (Cu(OH)). What is the concentration of Cu in the resulting solution?Thank you!

Sodium hydroxide is used extensively in acid-base titrations because it is a strong, inexpensive base. A sodium hydroxide solution was standardized by titrating 42.18 mL of 0.1753 M...

standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 1.08 mL, and the final reading was 31.51 mL. What was the molarity of the base solution? I got 0.2212 M but it... more
Molarity Chemistry Percent

01/11/21

How many moles of carbon are in 1.43 g sodium acetate?

Please Help. I've cried over this twice and I just don't understand. Thank you in advance.
Molarity Chemistry Percent

01/11/21

Find the molarity of a solution made by dissolving 3.84 g calcium bromide in 250.0 mL total solution.

PLEASE HELP. I've cried over this twice and I just don't understand. Thank you in advance.

Molecular calculation / empirical formular

Aspirin has the chemical formula C9H8O4. 1) How many grams of O are present in 1.25 moles of Aspirin?1.25 = 15.999/1 = 19.999 = 20 gO2) How many atoms of H are present in 1.25 moles of Aspirin?... more
Molarity Chemistry

08/18/20

Molarity Question based on H2SO4

How many millilitres of concentrated H2SO4 (16.0 M) is required to prepare 250 mL of 6.00 M H2SO4 solution?
Molarity

04/28/20

Calculate the molarity of 1.8 moles of MgCl2 in 4.3 L of solution.

Chemistry: Molarity

Calculate the molarity of each of the following solutions: (a) 293g HCl in 666mL of solution, a concentrated HCl solution(b) 2.0226 g FeCl3 in 0.1250L of a solution used as an unknown in general... more
Molarity

11/04/19

chemistry question

you weigh 25.8 grams of BeCl2 and dissolves it in water to a final volume of 200mL. assuming ally he salt dissolves, what is the molarity of this BeCl2 solution?
Molarity Chemistry Titration

10/09/19

How to find Mg of a substance using molarity

Calcium levels in blood can be determined by adding oxalate ion to precipitate calcium oxalate, CaC2O4, followed by dissolving the precipitate in aqueous acid and titrating the resulting oxalic... more

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