A chemist prepares a mixture of ethanol and water at a temperature of 23.0 °C. He measures out 38.5 mL of ethanol and mixes it with 38.2 mL. He measures the volume of the solution after it is well mixed and finds that it is 73.6 mL. The density of ethanol is 0:79 g/mL and the density of water is 1.0 g/mL. Calculate the volume percent of ethanol in this solution. Be sure your answer has the right number of significant digits. db

Q: Suppose 0.317 g of barium acetate is dissolved in 50. mL of a 80.0 m M aqueous solution of ammonium…

A: Mass of barium acetate =0.317 gVolume of ammonium sulfate = 50 mL = Molarity of ammonium sulfate =…

Q: A student dissolves 20. g of aniline (CH,NH,) in 500. mL of a solvent with a density of 0.83 g/mL.…

A: Given :- mass of aniline = 20.g  Volume of solvent = 500.mL  Density of solvent = 0.83 g/mL  To…

Q: A student dissolves 17. g of methanol (CH3OH) in 500. mL of a solvent with a density of 1.11 g/mL.…

A:

Q: A student makes a diluted solution of caffeine by pipetting 6.0 mL of the stock caffeine solution…

A: Concentration = Mass of Solute/Volume of Solution

Q: A student placed 17.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve…

A: Mass of Glucose = 17.5 g The volume of water = 100. mL Moles of Glucose = Mass/ Molar mass…

Q: A 11.39 M HCl solution has a density of 1.180 g/mL. What is the concentration of this solution in…

A:

Q: e the concentration in mo!

A:

Q: A chemist places 2.6428 g of NaCl in a 100 mL volumetric flask and adds water to the mark and calls…

A: The solution is given below -

Q: Expand the units of molarity for this solution: 0.035 M CaCl2 When the units are expanded, enter the…

A: The objective of the question is to expand the given concentration of the calcium chloride (CaCl2)…

Q: In the lab, Stock bottles of concentrated solutions can be diluted to make solutions for use with a…

A: Given: Molarity of initial solution = 12 M Molarity of final solution = 3 M Volume of final solution…

Q: 24.6 g of isopropyl alcohol is added to 342.2 mL of water. find the concentration of this solution…

A: Given that : Mass of isopropyl alcohol = 24.6 g, densiry of isopropyl alcohol = 0.786 g/mL Volume of…

Q: A dilute solution is found to contain 6.095 x 10-6 M of cobalt. This solution was prepared when 20.0…

A: M1 = initial molarity = 6.095 × 10-6 MV1 = initial volume = 20.0 mLV2 = final volume = 250.0 mLM2 =…

Q: A chemist must prepare 625. mL of 14.0 µM aqueous mercury(II) iodide (Hg¹₂) working solution. He'll…

A: Given data, Concentration of stock solution = 0.0000292 M Concentration of working solution = 14.0…

Q: Ms. Dunne added 2233.8 milliliters of water to 16.2 milliliters of NaOH solution to make a 3.60 x…

A: The equation for calculating molarity is the ratio of the moles of solute whose molarity is to be…

Q: Use ppm and ppb concentration units. The EPA's secondary standards for contaminants that may cause…

A: 1. Convert grams of Cl⁻ to milligrams:   - Given: 8.20 grams of Cl⁻.   - 1 gram = 1000 milligrams.…

Q: The names and chemical formulae of some chemical compounds are written in the first two columns of…

A: Given that, we have to tell the major species present when the following compounds dissolved in…

Q: Benzene is a carcinogenic (cancer-causing) compound. A benzene-contaminated water sample contains…

A: Given :  Concentration of benzene = 4.3 x 10-5 % by mass  Mass of benzene = 115 mg  Density of water…

Q: A solution is prepared by mixing 694.0 mL of ethanol with 506.0 mL of water. The molarity of ethanol…

A: Given that the solution is made by mixing 694.0 mL of ethanol and 506.0 mL of water.

Q: Fructose (molar mass = 180.2 g mol−1) is a common sugar. What is the molality of a solution of…

A:

Q: The solubility of sodium acetate at 20° C is 46.5 g per 100 grams of water. When 50.0 g of sodium…

A:

Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

A: Given: density of solution = 1.149 g/cm3 Molar mass of K2CO3 = 138.205 g/mol Mass percent of…

Q: An aqueous solution of KBr is prepared by dissolving 85.7 g of KBr in enough water to make 2.89 L of…

A: GIven: Mass of KBr=85.7 g Molar mass= 119.002 g/mol The volume of the solution=2.89 L Molarity of…

Q: A student Measured 13.3 ml of a stock caffeine solution with a concentration of 61.8 mg/ml and…

A:

Q: A certain ionic compound X has a solubility in water of 83.2 at 15. C. Calculate the greatest mass…

A:

Q: A student was asked to prepare a 1:25 dilution of 0.6 M solution of glucose. This dilution required…

A: If the volume of the water changes then if affects the concentration directly.  hence the…

Q: Magnesium has a density of 1.738 g/cm3. Using the density, determine the concentration of a solution…

A: Given :-  Density of Mg =  1.738 g/cm3  Volume of Mg = 12.6 cm3  Volume of water = 72.0 L  To…

Q: A doctor orders that a patient recieve 2.8 X 10^-3 mole of sodium chloride. The only solution…

A: Given: Amount of NaCl patient received = 2.8×10-3 mol Solution available contains 1.00 g per 100 mL…

Q: A lab prepared a solution of sulfuric acid with a volume of 5.0x10-4 m3. The solution is further…

A: Molarity is defined as the number of moles of solute dissolved in 1 L of solution. The unit of…

Q: An aqueous solution of acetic acid is 45.00% acetic acid by mass and has a density =1.052g/mL. What…

A: % by mass = 100 x Mass of solute/mass of solution Molarity = number of moles of solute/Volume of…

Q: Suppose 0.190 g of lead(II) acetate is dissolved in 350. mL of a 41.0 m M aqueous solution of…

A: Details

Q: A solution contains 6. 30 °C. Use the solubility graph to determine if the K₂Cr₂07 solution is…

A: Saturated solution is the solution in which no more solute can be dissolved at the same temperature.…

Q: The EPA's secondary standards for contaminants that may cause cosmetic or aesthetic effects in…

A: Calculate the concentration of contaminant using the formula given below.Convert grams to milligrams

Q: 12.2 g of isopropyl alcohol is added to 314.7 mL of water. Find the concentration of this solution…

A: Given : The mass of isopropyl alcohol=12.2 g  The density of isopropyl alcohol=0.786 g/mL Volume of…

Q: A student dissolves 2.5 g of phenol (C,H,OH) in 350. mL of a solvent with a density of 1.12 g/mL.…

A: Molarity is defined as the number of moles of solute dissolved in one liter of solution Whereas,…

Q: Some chemical compounds are listed in the first column of the table below. Each compound is soluble…

A: Strong acids are those compounds which completely dissociates to furnish H+ ions when dissolved in…

Q: A chemist must dilute 21.1mL of 6.81M aqueous calcium bromide CaBr2 solution until the concentration…

A: Here we have to see the concept of dilution. When we dilute the concentrated solution to low…

Q: Suppose 2.50 g of lead(II) acetate is dissolved in 300. mL of a 35.0 m M aqueous solution of…

A:

Q: You are washing glassware in a lab. The solution your 1 L beaker contains 5 mol/L NaOH in water. It…

A: The explanation is given below-

Q: A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting…

A:

Q: Step 1: Dissolve 271.8 g of glucose in enough water to make 500.0 mL of solution. Step 2: Transfer…

A: Given :-  mass of glucose = 271.8 g  molar mass of glucose = 180.16 g/mol  volume of solution =…

Q: 5.00 g of solid Al(NO3)3 was added to enough water to make a solution with a total volume of 100.0…

A: Molarity (M) :-  The number of moes of solute dissolved in one litre of solution is known as…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.