Is the use of Beer's Law valid when expressing concentrations in g/L rather than M? Select...
Is the use of Beer's Law valid when expressing concentrations in g/L rather than M?
Select one:
a)No, because g/L will give a non-linear plot for Beer's Law while M will give a linear plot.
b)No, because g/L is not a reliable indicator of concentration for a solution.
c)Yes, because mass units are proportional to moles for a given substance.
d)Yes, because concentration units are not relevant in the Beer's Law equation.
Homework Answers
The correct one is c) Yes, because mass units are proportional to moles for a given substance.
Mass = Molarity × Volume × Molar mass
Add Answer to:
Is the use of Beer's Law valid when expressing concentrations in
g/L rather than M?
Select...
Based on this data, I find it hard to the calculations and analysis and discussion Beer's...
Based on this data, I find it hard to the calculations and analysis
and discussion
Beer's Law Calculations: A. Dilution Calculations 1. Use the actual mass of cobalt(II) nitrate hexahydrate you used to calculate the concentration of your stock solution. 2. Calculate the concentration of your diluted solutions. The easiest way to do this is with the equation MiV2-M2V2. Show the work for the calculation of the concentration of at least one of your dilute solutions. 3. Make a table...
15. Use the Ideal Gas Law and the answers to questions 12, 13 and 14 to calculate the number of moles of hydrogen g...
15. Use the Ideal Gas Law and the answers to questions 12, 13 and 14 to calculate the number of moles of hydrogen gas present. R 0.0821 Leatm/mol K (watch sig figs.) 16. A student reacted 0.7655 g of chromium (at. wt - 51.996 g/mol) with exactly 1.566 g of chlorine (at. wt. - 35.453 g/mol). Convert both these masses to moles and determine the empirical formula (like AX) of the compound of Cr and CL SHOW YOUR WORK 17....
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes...
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes 27, what is the value of absorbance that corresponds to 35.0 %T? 28. Molar absorpt ivity is the absorptivity when concentration is in units of molarity and the gth is in centimeters. If a 1.53 x 10 M solution has an absorbance of 0.426 in a 1.00 em cell when measured at a wavelength of 254 nm, what is the molar absorptivity of the...
Prelaboratory assignment Exp. 4 Beer’s Law 1.Calculate the Concentration of the Crystal Violet Solutions in Table...
Prelaboratory assignment Exp. 4 Beer’s Law
1.Calculate the Concentration of the Crystal Violet Solutions in
Table 1 of the Procedureusing Vinitial x Minitial = Vdiluted x
Mdiluted (Note: Vdiluted = 15 mL). Record the concentrationsin
Table 1 AND in the Data table in the report sheet.
2.Plot the following data as absorbance vs concentration of X in
excel
Absorbance, A Molar Concentration of X
0.045 3.0 x 10-4 mol/L
0.097 6.2 x 10-4 mol/L
0.14 9.0 x 10-4 mol/L...
Can't figure out the concentration of the complex of solns. 10, 11, 12, 13, & 14. Modern...
Can't figure out the concentration of the complex of
solns. 10, 11, 12, 13, & 14.
Modern Experimental Chemistry Chemistry 153 The Iron(III) Thiocyanate Complex Purpose of the Experiment To determine the chemical formula of a complex ion and measure its formation equilibrium constant Equipment Spectro Vis spectrophotometer and LabQuest, cuvette, 25-mL buret (3), ring stand, buret clamp (2), 50-mL beaker (3), small plastic beakers Reagents SCN, as KSCN, 0.00200 M solution Fe; as Fe(NO), 0.00200 M solution and a...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2 -505 nm. Concentration of [Fe(Phen)/, M Absorbance 9.500 x 10 0.999 4.250 x 10 0.480 0.219 2.125 10% 1.063 x 10 0.104 0.000 0.003 Table 2. UV-vis absorbance values of [Fe(phen)]* held at 35 °C after mixing with H SO, and recorded at 5 minute intervals (in water at max = 505 nm). Time (minutes) Absorbance 0.997 0.935 0.877 0.823 0.772 0.724 0.680 0.638...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of th...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hy...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hypothetical reaction aAlE) products where a is a numeric variable and A is a chemical variable. The reaction therefore has the form of a decomposition reaction, in which a single substance forms one or more new substances. For consistency, all concentrations start out at 1.000...
4. Use Kepler's Second Law and the fact that L-fxp to determine at which points in...
4. Use Kepler's Second Law and the fact that L-fxp to determine at which points in an elliptical orbit around the Sun a planet has maximum and minimum speeds. (Section 13.5 will help.) 5. At the end of example 13.10, there's an "Evaluate" blurb about how inside the surface of the Earth the force of gravity varies proportionally to the distance from the center, and it makes reference to the next chapter. which is about oscillation. Model the motion of...
the concentration is .1000 M for NaOH. you cN disregard the second column. but there is...
the
concentration is .1000 M for NaOH. you cN disregard the second
column. but there is no further information.
equivalence point is 22.95. i dont have mL NaOH
this is all i have
DATA TABLE sor CHCOOH Trial Volume CHCOOH (ml) [NTOH (M) Equivalence point Md point (ML) (ml) NE 100CM 1000M a.so DATA ANALYSIS moles -(CX) 1. Calculate the number of moles of NaOH used in the reaction with the acetic acid (CH.COOH) solution . OOON NaoH 2. How...
Based on this data, I find it hard to the calculations and analysis
and discussion
Beer's Law Calculations: A. Dilution Calculations 1. Use the actual mass of cobalt(II) nitrate hexahydrate you used to calculate the concentration of your stock solution. 2. Calculate the concentration of your diluted solutions. The easiest way to do this is with the equation MiV2-M2V2. Show the work for the calculation of the concentration of at least one of your dilute solutions. 3. Make a table...
15. Use the Ideal Gas Law and the answers to questions 12, 13 and 14 to calculate the number of moles of hydrogen gas present. R 0.0821 Leatm/mol K (watch sig figs.) 16. A student reacted 0.7655 g of chromium (at. wt - 51.996 g/mol) with exactly 1.566 g of chlorine (at. wt. - 35.453 g/mol). Convert both these masses to moles and determine the empirical formula (like AX) of the compound of Cr and CL SHOW YOUR WORK 17....
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes 27, what is the value of absorbance that corresponds to 35.0 %T? 28. Molar absorpt ivity is the absorptivity when concentration is in units of molarity and the gth is in centimeters. If a 1.53 x 10 M solution has an absorbance of 0.426 in a 1.00 em cell when measured at a wavelength of 254 nm, what is the molar absorptivity of the...
Prelaboratory assignment Exp. 4 Beer’s Law
1.Calculate the Concentration of the Crystal Violet Solutions in
Table 1 of the Procedureusing Vinitial x Minitial = Vdiluted x
Mdiluted (Note: Vdiluted = 15 mL). Record the concentrationsin
Table 1 AND in the Data table in the report sheet.
2.Plot the following data as absorbance vs concentration of X in
excel
Absorbance, A Molar Concentration of X
0.045 3.0 x 10-4 mol/L
0.097 6.2 x 10-4 mol/L
0.14 9.0 x 10-4 mol/L...
Can't figure out the concentration of the complex of
solns. 10, 11, 12, 13, & 14.
Modern Experimental Chemistry Chemistry 153 The Iron(III) Thiocyanate Complex Purpose of the Experiment To determine the chemical formula of a complex ion and measure its formation equilibrium constant Equipment Spectro Vis spectrophotometer and LabQuest, cuvette, 25-mL buret (3), ring stand, buret clamp (2), 50-mL beaker (3), small plastic beakers Reagents SCN, as KSCN, 0.00200 M solution Fe; as Fe(NO), 0.00200 M solution and a...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2 -505 nm. Concentration of [Fe(Phen)/, M Absorbance 9.500 x 10 0.999 4.250 x 10 0.480 0.219 2.125 10% 1.063 x 10 0.104 0.000 0.003 Table 2. UV-vis absorbance values of [Fe(phen)]* held at 35 °C after mixing with H SO, and recorded at 5 minute intervals (in water at max = 505 nm). Time (minutes) Absorbance 0.997 0.935 0.877 0.823 0.772 0.724 0.680 0.638...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hypothetical reaction aAlE) products where a is a numeric variable and A is a chemical variable. The reaction therefore has the form of a decomposition reaction, in which a single substance forms one or more new substances. For consistency, all concentrations start out at 1.000...
4. Use Kepler's Second Law and the fact that L-fxp to determine at which points in an elliptical orbit around the Sun a planet has maximum and minimum speeds. (Section 13.5 will help.) 5. At the end of example 13.10, there's an "Evaluate" blurb about how inside the surface of the Earth the force of gravity varies proportionally to the distance from the center, and it makes reference to the next chapter. which is about oscillation. Model the motion of...
the
concentration is .1000 M for NaOH. you cN disregard the second
column. but there is no further information.
equivalence point is 22.95. i dont have mL NaOH
this is all i have
DATA TABLE sor CHCOOH Trial Volume CHCOOH (ml) [NTOH (M) Equivalence point Md point (ML) (ml) NE 100CM 1000M a.so DATA ANALYSIS moles -(CX) 1. Calculate the number of moles of NaOH used in the reaction with the acetic acid (CH.COOH) solution . OOON NaoH 2. How...
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