Chemistry Homework Help

24/7 Chemistry Homework Help

Get step-by-step solutions from expert tutors.

How it works?

Ask a question

Type, take a picture, or paste your question with all necessary details to ensure high-quality responses.

Get an answer in less than 24hrs

Once our tutors receive the question, they'll begin. You'll get an email once the solution is ready.

Get Notified

We will send you email and text notification to let you know when your question is answered.

Browse Homework Solutions

24 solutions

Calculate Molarity

Q. If CaCl2 is dissolved in water, what can be said about the concentration of the Ca^2+ ion? a) It has the same concentration as the Cl^- ion. b) Its concentration is half that of the Cl^- ion. c) Its concentration is twice that of the Cl^- ion. d) Its concentration is one-third that of the Cl^- ion.

Solved • Feb 17, 2020

Calculate Molarity

Q. An aqueous solution is 5.50% by mass ammonia, NH3, and has a density of 0.975 g/mL. The molarity of ammonia in the solution is ______ M.

Solved • Feb 4, 2020

Calculate Molarity

Q. A 6.0 m acetic acid solutions has a density of 1.05 g/mL. What is the concentration of this solution in molarity?

Solved • Nov 23, 2019

Calculate Molarity

Q. Chromium (III) forms a complex with diphenylcarbazide whose molar absorptivity is 4.17x10^4 at 540 nm. Calculate the path length (in cm) needed to cause a 2.56×10^-6 M solution of the complex to have the same absorbance as a 7.68×10^-6 M solution measured in a 1.00-cm cell.

Solved • Nov 17, 2019

Calculate Molarity

Q. The molar absorptivity of the Bi(III) thiourea complex is 5.2x101cm-1M-1 at 470nm. What concentration (in mM) of the complex would be needed to produce a solution with a 6.85% transmittance when measure in a 1.00-cm cell at this wavelength. (1000 mM = 1M)

Solved • Nov 16, 2019

Calculate Molarity

Q. Which solution has the greatest osmolarity? a) 0.35 M AlCl3 b) 0.14 M KF c) 0.2 M CaBr2 d) 0.6 M NaCl e) 0.10 M KNO3

Solved • Nov 7, 2019

Calculate Molarity

Q. A 1.93M solution of "A" has an absorbance of 0.54. What is the absorbance of solution "B" which has a concentration of 1.09M? The path length of the cell is 3.0cm.

Solved • Nov 3, 2019