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

68 solutions

Mass Percent

Q. Calculate the milligrams of chlorine (35.453 g/mol) in a 3.94 g solution of 21.8 wt% CaCl2 (110.98 g/mol).

Solved • May 27, 2019

Mass Percent

Q. What mass of ethane (CH3CH3) is contained in 50.0 mL of a 13.9% by mass solution of ethane in hexane? The density of the solution is 0.611 g/mL.

Solved • May 17, 2019

Mass Percent

Q. What volume of concentrated sulfuric acid (H2S04, 1805 g/ml) is needed to prepare 250 ml of a .90M a aqueous solutions?

Solved • May 17, 2019

Mass Percent

Q. Write the relation between (w/W)% of solute, density and molarity of solution. calculate the density (in g/ml) of a 3.6 M solution that is 29% H2SO4 (molar mass = 98 g/mol) by mass? please solve q. no. 4

Solved • May 16, 2019

Mass Percent

Q. A solution of naphthalene in benzene is 3% by mass of naphthalene. What is the mass percent of benzene?

Solved • May 8, 2019

Mass Percent

Q. how many grams of KOH are in 225 g of 5.00% of KOH solution?

Solved • Apr 18, 2019

Mass Percent

Q. 0.89% (w/v) NaCl solution known as physiological saline b/c it has the same concentration of salts as human blood. What is the molarity this solution? Answer is 0.15 M. Ch13,Q39

Solved • Apr 5, 2019