Measuring Concentration

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Questions

• How do you measure concentration from absorbance?
• How do you measure concentration of a solution?
• How do you measure concentration of CO2?
• What concentration measure changes with temperature?
• How can I measure the concentration of salt in water?
• How is the concentration of a solution measured?
• How does the concentration of electrolyte affect an electrochemical cell?
• How does normality differ from molarity?
• What is the molality of a solution of 10 g NaOH in 500 g water?
• What are the mole fractions of the components of the solution formed when 92 g glycerol is mixed with 90 g water?
• What is the molarity of a solution made when water is added to 11 g CaCl2 to make 100 mL of solution?
• How does molality differ from molarity?
• How can molarity be used in stoichiometric calculations?
• How can molarity be used as a conversion factor?
• How can molarity and osmolarity be calculated from m/v?
• What is the difference between pH and hydrogen ion concentration?
• What amounts do you compare when measuring concentration?
• What are common mistakes students make with molarity?
• What are percentages of concentration?
• What are some common mistakes students make when measuring concentration?
• What are some examples of measuring concentration problems?
• Question #9e94b
• Question #b3525
• Question #8ecc9
• Question #5641d
• Question #c4307
• What is a simple definition of entropy and how does it relate to chaos theory?
• What is the concentration of a #KOH (aq)# solution if 12.8 mL of this solution is required to react with 25.0 mL of .110 mol/L #H_2SO_4(aq)#?
• For a 0.15 M solution of #K_2SO_4#, what is the concentration of potassium?
• Current strength of 0.2A carry out electrolysis of aqueous potassium chloride for 10 minutes.The volume of solution is 125 ml and it is assumed that during the electrolysis does not change.What is the plural concentration of OH- ions at the end of the...?
• In a #0.250*mol*L^-1# solution, what molar quantity is associated with a #0.200*L# volume?
• Question #c4e2d
• What instrument is used to measure the amount of chemical in a solution based on its color?
• A 65.0-mL sample of 0.513 M glucose (#C_6H_12O_6#) solution is mixed with 140.0 mL of 2.33 M glucose solution. What is the concentration of the final solution?
• How do you solve for concentration knowing absorbance?
• Question #f3621
• What is the #pH# of a solution of sulfuric acid of #5.98*mol*L^-1# concentration?
• What does #"ppm"# mean with respect to concentration?
• Given: 1.65 L of water added to 112 grams of sodium acetate (#NaC_2H_3O_2#). What is the concentration of the solution?
• Which measure of concentration is best used when working with small concentrations?
• A physician prescribes administration of 100 mg of a drug. The drug label states that there are 150 mg per milliliter in a multi dose vial that contains 5 ml. What is the available amount of the drug, according to the standard formula?
• Question #bbd91
• If the concentration of a #FeCl_3# solution is 2.5 M, what is the concentration of just chloride ions?
• A stock solution of hydrochloric acid with 1.25 M, 25 mL was diluted to 75 mL with water. What was the new concentration of this diluted acid?
• Given an aqueous solution in which the #[H^+]=5.0*10^-3# #M#, what is the molar hydroxide ion concentration?
• If water is added to 50 ml of a 0.04M solution so that it fills a 200 mL beaker, what is the final concentration?
• Does dilution change the concentration?
• A 3.0 L solution contains 73.5 g of #H_2SO_4#. What is the molar concentration of the solution?
• If 40.0 mL of a #3.0x10^(-5)# solution is diluted to 100 mL, what is the resulting concentration?
• What NaCl concentration results when 204 mLof a 0.760 M NaCI solution is mixed with 417 mL of a 0.430 M NaCl solution?
• #NiCl_3# is a strong electrolyte. How do you determine the concentration of each of the individual ions in a 0.400 M #NiCl_3# solution?
• Earth's oceans have an average depth of 3800 m, a total area of #3.63 x 10^8 km^2#, and an average concentration of dissolved gold of #5.8 x 10^-9# #g#/#L#. How many grams of gold are in the oceans?
• How can the use of fertilizers result in reduced O2 concentrations in the waterways?
• For drivers in the UK, the legal limit of the concentration of ethanol (molar mass 46 g mol-1) in the blood mg per 100 cm^3. What is equivalent to a concentration of?
• Question #a59e1
• What is the final concentration of a #25.7*mL# volume of #KmnO_4(aq)# that is diluted to a #50.00*mL# volume?
• 10.00 ml of 0.1089 M oxalic acid neutralises 18.65 ml of sodium hydroxide solution. What is the concentration of the sodium hydroxide ?
• What is total IONIC concentration in a solution of #MgCl_2(aq)# at #0.25*mol*L^-1# concentration?
• If you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L, what is the new concentration of the solution?
• How do you calculate the ionic strength of 0.0087 M NaOH?
• What is the concentration of hydroxide ions in pure water at 30.0°C, if #K_w# at this temperature is #1.47*10^-14#?
• Question #dfa3d
• How many #cm^3# does one mole of Ideal gas occupy under standard conditions?
• Can you assign the sulfur oxidation states in #"sulfate ion,"# #SO_4^(2-)#, and #"sulfite ion,"# #SO_3^(2-)#?
• Use the Debye-Huckel equation to evaluate #gamma_(pm)# for a #"0.0200 mol/kg"# #"HCl"# solution, with methanol as the solvent, at #25^@ "C"# and #"1 atm"#?
• If 23.55 mL of 1.235 M barium hydroxide is required to fully neutralize a 25.6 mL solution of acetic acid, what is the concentration of the acid solution in M?
• An acidic solution has a pH of 4.02. What is the #H_3O^+# concentration of this solution in M?
• Suppose that a 120.0 solution contains 100.0 g of water and 20.0 g of dissolved sugar. What is the approximate concentration of sugar in the solution, by mass?
• What is the molal concentration of lead nitrate in 0.726 M #Pb(NO_3)_2#?
• What is the concentration of 10.00 mLof HBr if it takes 5 mL of a 0.253 M LiOH solution to neutralize it?
• Consider a 2 M solution of Magnesium Chloride. What is the concentration of total ions (+ and -) in the solution?
• A 25.0 mL sample of sulfuric acid is completely neutralized by 32.8 mL of 0.116 mol/L ammonia solution. Ammonium sulfate is formed What is the concentration of the sulfuric acid?
• A solution of ethanoic acid in water has a pH of 3.2. How do you calculate the concentration of the solution? #K_a = 1.7 x 10^-5 mol# #dm^-3#?
• What is the concentration of a solution which contains 1 mole of #CaCl_2# dissolved in 2,000 milliliters of solution?
• How do you determine the OH (aq) concentration in 1.0 M aniline (#C_6H_5NH_2#) solution. (The #K_b# for aniline is #4.0 x 10^-10#?
• On analysing a sample of water, a chemist finds that 100#cm^3# of it contains 0.007g of calcium carbonate. What is the concentration of calcium carbonate in ppm?
• How is molarity related to concentration?
• What is concentration gradient?
• A process that uses a solution of known concentration to find the concentration of another solution is called what?
• Question #f4f3c
• Question #12905
• If the H ion concentration is 0.00075 M, what is the OH ion concentration?
• For the reaction: #N_2(g) + 2O_2(s) rightleftharpoons 2NO_2(g)#, #K_c# - #8.3x10^-10# at 25 °C. What is the concentration of #N_2# gas at equilibrium when the concentration of #NO_2# is five times the concentration of #O_2# gas?
• If 10 ml of a 9 g/L stock solution of ferric chloride are added to a Hach container that has 5 L of water, what will be the concentration of ferric chloride in the water?
• How do you calculate the concentration of iodate ions in a saturated solution of lead (II) iodate, #Pb(IO_3)_2#? The #K_(sp) = 2.6 xx 10^(-13)#?
• Question #9ef4e
• What is the path length in centimeters when the transmittance is #0.692#, the molar absorptivity is #7.39 xx 10^4 "L/(mol.cm)"# and the concentration is #0.0000923 M#?
• When seawater evaporates, the concentration of salts increases until what happens?
• A 20-milliliter sample of 0.60 M HCI is diluted with water to a volume of 40 milliliters. What is the new concentration of the solution?
• What would be the concentration of a solution made by diluting 45.0 mL of 4.2 M KOH to 250 mL?
• Question #8c957
• #3.00 * 10^-3# mol ofHBr are dissolved in water to make 16 L of solution. What is the concentration of hydroxide ions, [#OH^-#] in this solution?
• #3.00x106^-3# mol of HBr are dissolvedin water to make 16.0 L of solution. What is the concentration of hydroxide ions, [OH-] in this solution?
• How do you convert the following p-functions to molar concentrations? pLi = -0.221; pMn = 0.0025; p#NO_3# = 7.77
• The transmittance for a sample of a solution, measured at #590nm# in a #1.5-cm# cuvette, was #76.2%#. What is the corresponding absorbance?
• How to get new concentration from percent transmittance?
• Transmittance of a solution? Question #3# only
• How do I find the specific absorptivity from the following graph?
• Question #e619f
• What is the hydronium ion concentration of a solution whose pH is 4.12?
• What particles move from low concentration to high concentration?
• Question #aa31d
• How do you calculate the concentration of #H^+# ions in a 0.27 M NaoH solution?
• All of the reagent solutions have a concentration of 0.2 M. This means that there is 0.2 mole of dissolved substance per liter of solution. What will be the concentration after mixing, assuming you use equal volumes of each solution?
• The pH of a juice drink is 2.8. How do you find the concentration of hydrogen ions in the drink, in simplest form?
• Which is the thickest solution-1(M) of syrup or 1(m) of syrup?
• What is the negative logarithm of the hydrogen ion concentration known as?
• Question #b2362
• Suppose 1.2 grams of calcium hydroxide are dissolved in 1.75 L of an aqueous solution. How do you determine the following: hydroxide ion concentration, hydronium ion concentration, calcium ion concentration, pH and poH?
• What is the concentration in m/m% of a solution prepared from 50.0 g NaCl and 150.0 g of water?
• How would you go about determining the concentration of an acetic acid solution in vinegar?
• What is the concentration of a solution, expressed in g/100 mL, if 25 g of solute dissolved in 40 mL of water?
• Given the reaction: #HC_2H_3O_2(aq) + H_2O rightleftharpoons H_3O^+(aq) + C_2H_3O_2^(-)(aq)# When the reaction reaches a state of equilibrium, what happens to the concentrations of the reactants?
• What are the molar concentrations of #[H+]# and [#OH-#] in pure water at 25°C?
• A 20.0-g sample of sugar is dissolved in 59.8 g water. What is the concentration of the solution?
• Question #1d13b
• Question #2a6d3
• What is the #[OH^-]# for a solution at 25°C that has a #[H_3O^+]# of #5.36 times 10^-5#?
• What is the concentration of all ions present in the following solutions: 0.100 mole of #Ca(NO_3)_2# in 100.0 mL solution?
• What is the concentration of sulfuric acid in the following scenario?
• Question #24c18
• Question #03e18
• The concentration of the appetite-regulating hormone #1.3 times 10^-10# #M# in a fasting person. How many molecules of ghrelin are in 1 L of blood?
• What is the concentration of #OH^-# ions in a solution that contains #1 times 10^-3# #M# #H^+#?
• What is the molarity of #"50% w/w"# #HCl# solution for which #rho_"solution"=1.15*g*cm^-3#?
• Pure water and alcohol are mixed to get a 60% (weight) alcohol solution. The densities in Kg/m3 of water, alcohol and the solution may be taken as 998, 798 and 895 respectively at 293 K. Estimate the molarity and molality??
• How does the concentration of Oxygen affect the rate of corrosion of steel in seawater and on land?
• How do we assess the concentration of an acid?
• Question #c6c4e
• What is the relationship between normality and molarity? Normality and molality? Mole fraction and molarity?
• The molecular formula of a commercial resin used for exchanging ions in water softening is #"C"_8"H"_7("SO"_3)"Na"# molecular weight 206. The maximum uptake of #"Ca"^(2+)# ions by the resin when expressed in mole per gram resin is?
• Question #aea9c
• Question #6552f
• Question #90f8b
• Question #550c5
• What is the volume of solution with 0.82g/L concentration when the mass of the solute is 7g?
• You have 25 milliliters of a drink that contains 70% Caffeine. How many milliliters of a drink containing 40% Caffeine needs to be added in order to have a final drink that is 65% Caffeine?
• To show that you are justified in using [OH-] as a constant: using concentrations from Run 1, show that the concentration of NaOH has changed insignificantly when half of a CV chloride has been consumed?