(Concentration) You are tasked to prepare 300.000 ppb of a sodium carbonate standard for a titrimetric analysis. If you need to prepare 1000.00 (±0.06) mL of this solution, how much (in grams) solid, pure Na2CO3 are you supposed to dissolve? What absolute uncertainty is associated with your mass measurement if the prepared solution has a 0.1% percent relative uncertainty? Write your answer using the appropriate number of digits. Note that the formula mass of Na2CO3 is 105.9888 g/mol with negligible error. Assume that instrument precision is not a limitation in your lab. (absolute error)

(Concentration) You are tasked to prepare 300.000 ppb of a sodium carbonate standard for a titrimetric analysis. If you need to prepare 1000.00 (±0.06) mL of this solution, how much (in grams) solid, pure Na2CO3 are you supposed to dissolve? What absolute uncertainty is associated with your mass measurement if the prepared solution has a 0.1% percent relative uncertainty? Write your answer using the appropriate number of digits. Note that the formula mass of Na2CO3 is 105.9888 g/mol with negligible error. Assume that instrument precision is not a limitation in your lab. (absolute error)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

You measure 15.0 mL of the H2C2O4 solution with a 100-mL graduated cylinder and add it to a 125-mL Erlenmeyer flask. Then you add two drops of the indicator, phenolphthalein, to the oxalic acid solution in the flask. You dispense the NaOH solution from the buret into the flask (while swirling the flask) until you reach the endpoint. At the endpoint, the solution in the flask turns light pink. You repeat the titration two additional times for a total of three trials. H2C2O4 (aq) + 2 NaOH (aq) --> Na2C2O4 (aq) + 2 H2O (l) (I) (II) (III) Volume of H2C2O4 used 15.00 mL 15.00 mL 15.00 mL how many Moles H2C2O4 are used in each trial?
From the calibration curve (yellow table calibration data) calculate the concentration of sugar in solution
Please fill in blanks as shown on problem!!
Using the calibration curve below (equation of the line: y=0.0039x + 0.9981) to determine the percentage of sugar in a sugar water solution with a density of 1.034 g/mL. Density versus Percent Sugar 1.07 1.06 y = 0.0039x + 0.9981 R² = 0.9998 1.05 1.04 1.03 1.02 1.01 1 0.99 6 8 10 12 14 16 Percent Sugar (% m/m ) 8.5% 1.0% 9.2% 4.2 % 9.9% Density (g/mL) 2.
For lab 4, we combined baking soda with vinegar, according to the chemical equation NaHCO 3 + CH 3COOH ==== NaCH 3COO + CO 2 + H 2O Consider 3 experiments: (i) 2g baking soda + 5mL vinegar, (ii) 2g baking soda + 10mL vinegar and (iii) 2g baking soda + 20mL vinegar. The amount of CO 2 produced was highest for (iii) and lowest for (i). For these experiments, which of the following is true? Vinegar ran out first Baking soda ran out first They both ran out at the same time Neither ran out
List and define the indicators that are used to assess the performance of a specific analytical method under specified conditions.
A student prepares a 0.29 mM aqueous solution of trimethylacetic acid (C,H,CO,H). Calculate the fraction of trimethylacetic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. |% x10
The following volumes of 0.000300 M SCN are diluted to 15.00 mL. Determine the concentration of SCN in each sample after dilution. These values will be used during the experiment. To enter exponential values, use the format 1.0e-5. Sample 0.000300 M SCN (mL) [SCN'] (M) 1 1.50 3.50 7.00 4 10.00 3.
A 0.100 M solution of an unknown acid, HA, is 3.95% ionized. Complete the following table, but instead of using the variable x, calculate the number values of each quantity and report these values to the correct number of significant figures. Fill in all of the cells. Include signs in the Change column to indicate a gain or loss of concentration. Do not include any units in your answers, M is assumed. To enter values in scientific notation follow the convention: 0.00753 = 7.53E-3 Submit Answer Tries 0/45 What is the Ka of HA? Calculate your answer to three sig figs. K₂= Submit Answer Tries 0/45 Now calculate the pH of the solution of HA. pH= Initial Change Equilibrium [HA] [H+] [A]
Can you help me?
You are in the lab preparing copper solutions for the MICRO lab this week. You measure 0.1035 (±0.0001) g of copper metal and dissolve it in a few mLs of concentrated nitric acid. This solution is diluted to the mark with water in a 50.00 (±0.05) mL volumetric flask. You withdraw a 5.00 (±0.01) mL aliquot with a volumetric pipet and deliver it to a 100.00 (±0.08) mL volumetric flask. After dilution to the mark with water, calculate the concentration and the absolute error in a solution of copper in ppm (assume ppm = 1 µg/g = 1 µg/mL = 1 mg/L).
Does it possible to use gravimetric analysis to quantiify certain parameters as indicators of quality in squash soup? If yes, please explain the process