Chemistry Chemistry Practice Problems Solutions Library

# Calculate Molarity Solutions Library

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46 solutions

Calculate Molarity

#### Q. A solution of H2SO4(aq) with a molal concentration of 2.24 m has a density of 1.135 g/mL. What is the molar concentration of this solution?

Solved • Jan 26, 2021

Calculate Molarity

#### Q. How do you calculate concentration from absorbance?

Solved • Nov 16, 2020

Calculate Molarity

#### Q. A solution was prepared by dissolving 24.0 g of KCl in 225 g of water.A. Calculate the mass percent of KCl in the solutionB. Calculate the mole fra...

Solved • Oct 23, 2020

Calculate Molarity

#### Q. What is the molarity of a solution prepared by dissolving 10.7 g Nal in 0.250 L?A) 42.8 B) 0.0714 C) 2.86 x 10-4 D) 0.286 E) none of the above

Solved • Apr 21, 2020

Calculate Molarity

#### Q. A student finds a solution of blue dye #2 (another food dye we are not using in this lab) in a 1.0 cm cuvette has a maximum absorbance of 0.572 at ...

Solved • Mar 31, 2020

Calculate Molarity

#### Q. A 7.92 mass % aqueous solution of ethylene glycol (HOCH2CH2OH) has a density of 1.15 g/mL. Calculate the molarity of the solution. Give your answer...

Solved • Nov 1, 2019

Calculate Molarity

#### Q. Which of the following solutions will have the most particles present per liter?A. 0.3 M K2SO4B. 0.1 M HNO3C. 0.4 M ethanol C2H5OHD. 0.2 M KBr

Solved • Aug 29, 2019

Calculate Molarity

#### Q. Match the missing symbol, name, or unit to the variables in the Beer-Lambert Law.

Solved • Aug 7, 2019

Calculate Molarity

#### Q. Baking soda (sodium bicarbonate, NaHCO3) reacts with acids in foods to form carbonic acid (H2CO3), which in turn decomposes to water and carbon dio...

Solved • Jan 3, 2019

Calculate Molarity

#### Q. The "free-base" form of cocaine (C17H21NO4) and its protonated hydrochloride form (C17H22ClNO4) are shown below; the free-base form can be converte...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. The "free-base" form of cocaine (C17H21NO4) and its protonated hydrochloride form (C17H22ClNO4) are shown below; the free-base form can be converte...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. Glucose makes up about 0.10% by mass of human blood.What further information would you need to determine the molarity of the solution?

Solved • Dec 3, 2018

Calculate Molarity

#### Q. Brass is a substitutional alloy consisting of a solution of copper and zinc. A particular sample of red brass consisting of 81.0% Cu and 19.0% Zn b...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. A sodium nitrate solution is 12.5 % NaNO3 by mass and has a density of 1.02 g/mL. Calculate the molarity of the solution.

Solved • Dec 3, 2018

Calculate Molarity

#### Q. A solution is prepared by mixing 631 mL of methanol with 501 mL of water. The molarity of methanol in the resulting solution is 14.29 M. The densit...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. Hydrochloric acid is usually purchased in a concentrated form that is 37.0% HCl by mass and has a density of 1.20 g/mL.How much concentrated soluti...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL.How much concentrated solution wo...

Solved • Dec 3, 2018

Calculate Molarity

#### Q. The density of a 21.0% by mass ethylene glycol (C2H6O2 ) solution in water is 1.04 g/mL.Find the molarity of the solution.

Solved • Oct 31, 2018

Calculate Molarity

#### Q. The total concentration of dissolved particles in blood is 0.30 M. An intravenous (IV) solution must be isotonic with blood, which means it must ha...

Solved • Oct 30, 2018

Calculate Molarity

#### Q. The total concentration of dissolved particles in blood is 0.30 M. An intravenous (IV) solution must be isotonic with blood, which means it must ha...

Solved • Oct 30, 2018

Calculate Molarity

#### Q. An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d = 1.114 g/mL; ℳ = 62.07 g/mol) and water (d = 1.00 g/mL) at ...

Solved • Oct 30, 2018

Calculate Molarity

#### Q. Solutions of hydrogen in palladium may be formed by exposing Pd metal to H2 gas. The concentration of hydrogen in the palladium depends on the pres...

Solved • Oct 29, 2018

Calculate Molarity

#### Q. Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H2SO4, for which the density is 1.3057 g/mL.

Solved • Oct 16, 2018

Calculate Molarity

#### Q. D5W is a solution used as an intravenous fluid. It is a 5.0% by mass solution of dextrose (C6H12O6) in water. If the density of D5W is 1.029 g/mL, ...

Solved • Oct 16, 2018

Calculate Molarity

#### Q. A cough syrup contains 5.0% ethyl alcohol, C2H5OH, by mass. If the density of the solution is 0.9928 g/mL, determine the molarity of the alcohol in...

Solved • Oct 16, 2018

Calculate Molarity

#### Q. A throat spray is 1.40% by mass phenol, C6H5OH, in water. If the solution has a density of 0.9956 g/mL, calculate the molarity of the solution.

Solved • Oct 16, 2018

Calculate Molarity

#### Q. In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading in millimoles per liter. If a measurement of 5.3 mM i...

Solved • Oct 16, 2018

Calculate Molarity

#### Q. The level of mercury in a stream was suspected to be above the minimum considered safe (1 part per billion by weight). An analysis indicated that t...

Solved • Oct 16, 2018

Calculate Molarity

#### Q. The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system. Limi...

Solved • Oct 16, 2018

Calculate Molarity

#### Q. A solution of H2SO4(aq) with a molal concentration of 4.37 m has a density of 1.233 g/mL. What is the molar concentration of this solution?

Solved • Apr 2, 2018

Calculate Molarity

#### Q. What is the molarity of the solution 0.0433 m LiF, if the density is 1.10g/mL?

Solved • Mar 27, 2018

Calculate Molarity

#### Q. Household hydrogen peroxide is an aqueous solution containing 3.0% hydrogen peroxide by mass. What is the molarity of this solution? (Assume a dens...

Solved • Mar 26, 2018

Calculate Molarity

#### Q. A solution of H2SO4(aq) with a molal concentration of 3.58 m has a density of 1.200 g/mL.What is the molar concentration of this solution?

Solved • Mar 26, 2018

Calculate Molarity

#### Q. What is the concentration of alcohol, in terms of molarity, in blood if the BAC is 0.08?

Solved • Mar 22, 2018

Calculate Molarity

#### Q. What is the molarity of NO 3- in each solution?A) 0.190 M KNO3.B) 0.300 M Ca(NO3)2.C) 0.400 M Al(NO3)3.

Solved • Feb 27, 2018

Calculate Molarity

#### Q. From the Beer-Lambert Law, A=ebcWhere A is absorbance, e is the molar absorbtivity, b is the path length of the sample - that is, the path length o...

Solved • Jan 4, 2018

Calculate Molarity

#### Q. if CaCl2  is dissolved in water, what can be said about the concentration of the Ca 2+ ion?

Solved • Dec 19, 2017

Calculate Molarity

#### Q. What is the concentration of K+ in 0.15 M of K2S ?

Solved • Dec 19, 2017

Calculate Molarity

#### Q. Use the following graph to determine the molar absorptivity of Bromothymol blue (BTB)? Assume a cuvet with a 14.45 mm diameter was used.

Solved • Dec 14, 2017

Calculate Molarity

#### Q. Choose the correct statement: A. Molarity is defined as moles of solute per liter of solvent. B. % by mass is defined as grams of solute per 100 ...

Solved • Oct 10, 2017

Calculate Molarity

#### Q. What is the molarity of a 1.484  m solution of sucrose, C12H22O11? The density of the solution is 1.127 g/mL.A. 1.672 MB. 1.484 MC. 3.400 MD. 1.109...

Solved • Apr 26, 2017

Calculate Molarity

#### Q. Which of the following concentration units would you  NOT use when conducting an experiment in which you place a solution in a hot water bath?  a)...

Solved • Feb 17, 2017

Calculate Molarity

#### Q. An aqueous solution of tartaric acid, H2C4H4O6, is 0.278 m and has a density of 1.006 g/mL. What is the molarity of the solution? (molar mass = 150...

Solved • Jan 19, 2017

Calculate Molarity

#### Q. Which of the following concentration units is temperature dependent?A. mass percentB. ppmC. mole fractionD. molalityE. none of the above.

Solved • Aug 24, 2016

Calculate Molarity

#### Q. Concentrated HCl is usually available at a concentration of 37.7 % by mass. What is its molar concentration? (The density of the solution is 1.19 g...

Solved • Apr 18, 2016

Calculate Molarity

#### Q. A concentrated aqueous ammonia solution has a density of 0.90 g/mL and is 28.0% by mass ammonia. Determine the molar concentration of this solution...

Solved • Feb 4, 2016