A group of students performed a series of titrations in the laboratory and found that their unknown sample had an average concentration of 15.06 M. The accepted value for their sample is 15.47 M. What should the group report as their %error? An example of a percent error calculation is given in the introduction of your laboratory manual. Report the absolute value of your answer to 3 decimal places. Type your answer... A group of students perform a series of dilutions and produce a calibration curve with the general equation y-ax+b. If one of the points they plotted was (0.92. 3.01) and the intercept was 0.89, what was the slope (a) of their line? Report your answer to 3 decimal places Type your answer...

A group of students performed a series of titrations in the laboratory and found that their unknown sample had an average concentration of 15.06 M. The accepted value for their sample is 15.47 M. What should the group report as their %error? An example of a percent error calculation is given in the introduction of your laboratory manual. Report the absolute value of your answer to 3 decimal places. Type your answer... A group of students perform a series of dilutions and produce a calibration curve with the general equation y-ax+b. If one of the points they plotted was (0.92. 3.01) and the intercept was 0.89, what was the slope (a) of their line? Report your answer to 3 decimal places Type your answer...

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter3: Matter

Section: Chapter Questions

Problem 46AP: (For Exercises 4546) Solutions containing nickel(II) ion are usually bright green in color. When...

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(For Exercises 4546) Solutions containing nickel(II) ion are usually bright green in color. When potassium hydroxide is added to such a nickel(II) solution, a pale-green fluffy solid forms and settles out of the solution. The fact that a reaction takes place when potassium hydroxide is added to a solution of nickel(II) ions is an example of a properly. . The fact that a solution of nickel(II) ion is bright green is an example of a property.
Why is the ability to solve problems important in the study of chemistry? Why is it that the method used to attack a problem is as important as the answer Lo the problem itself?
Solution 1 is diluted by combining 6 mL of Solution 1 with 64 mL of Solution 2. What is the dilution of solution 1? Report your answer in standard decimal notation rounded to two decimal places. For example, 4 mL added to 16 mL would be a 0.20 dilution. Include trailing zeros if necessary so your answer has two decimal places.
About Sampling, tick only the incorrect alternative(s). Choose one or more: A) Identifying the nature of a substance present in an unknown sample is called qualitative analysis. The process of measuring how much a constituent is present in a substance is called quantitative analysis. B) A type of error that is known due to procedures that cause a measure to be too large or too small is called a random error, such as reading a scale. C) Sample preparation is the process in which a representative sample is converted into a form suitable for chemical analysis. This usually means dissolving the sample. For a sample with low analyte concentration it may need to be diluted before being analyzed. D) Sampling is the process used to collect a representative sample for analysis. As real abnormals, as regulators are used in real experiments, they also typically prepare some degree of sample preparation to remove substances that do not interfere with the analysis of the desired analyte and…
Your 50 mL beaker has a mass of 6.65 g. You add 10.00 mL to the 50 mL beaker and now the total mass is 17.45 g. You originally used 5.14 g of NaCl to make the solution. What is the percent composition of your solution? These calculations are described in the lab procedure in detail.
To what volume (in mL) should 0.67 mL of an 5.21 M acetic acid solution be diluted in order to obtain a final solution that is 1.77 M? Calculate to 2 decimal places Read about significant figures and rounding in the Helpful Resources page! Do not include units when reporting your answer Use standard notation or scientific notation as accepted by blackboard e.g. 0.001 or 1E-3, not 1 x 10^-3
In a gravimetric determination of lead content in brass, there is a constant loss by solubility of 1.55 mg of lead. A sample contains 7.86% by mass lead, and a 0.3514-g sample is used for the analytical determination using the gravimetric method. Calculate the % relative error. *Watch the units. **Provide your answer to two decimal places and without units. Avoid using scientific notation.
Q8 To what volume (in mL) should 6.27 mL of an 6.57 M acetic acid solution be diluted in order to obtain a final solution that is 2.38 M? Calculate to 2 decimal places Read about significant figures and rounding in the Helpful Resources page! Do not include units when reporting your answer Use standard notation as accepted by Canvas e.g. 0.001
A group of students is doing an analysis of copper in a 1-peso coin. They were tasked to prepare standard solutions and weigh the analyte as the end-product of their experiment. What type of error is it and explain how this type of error incurring in their experiment.
The solubility of a specific salt is 0.5 g/mL, what is maximum amount in grams of this salt you can dissolve in 156 mL? Round and report your answer to an whole integer without unit.
Constants I Periodic Ta 35.0 g MgBr, in 220.0 mL of solution Express your answer with the appropriate units. HẢ M% = Value Units Submit Request Answer Part D 35.0 g Li2 C03 in 220.0 mL of solution Express your answer with the appropriate units. HÁ M = Value Units C.
A chemist makes 400. ml. of sodium carbonate (Na,CO,) working solution by adding distilled water to 160. ml. of a 1.39 M stock solution of sodium carbonate in water Calculate the concentration of the chemist's working solution, Round your answer to 3 significant digits. OM 0.8 A