Quantify volume using proper sig figs:
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Quantify volume using proper sig figs:
Volumetric Pipette 300 ml Tolerance 0.15 mL
9. Calculation - show all work, units and proper sig figs in final answer! Vinegar is...
9. Calculation - show all work, units and proper sig figs in final answer! Vinegar is 5.0% acetic acid (HC,H,O,) by mass and has a density of 1.02 g/mL. What volume, in ml, of vinegar is needed to completely neutralize 0.250 g of Al(OH), stained on your pants? (10 pts) NOTE: Molar mass of Al(OH), is 78.00g/mol. Molar mass of HC,H,O, is 60.05g/mol. mL of vinegar
0.0411 mol of glucose in 85.2 mL of solution using 3 sig figs Thank you
0.0411 mol of glucose in 85.2 mL of solution using 3 sig figs Thank you
Determine the errors of the volumetric devices. a. For each pipette determine the mean volume. You...
Determine the errors of the volumetric devices. a. For each pipette determine the mean volume. You will need to use the CRC, Perry’s Handbook or other reference to obtain the density of water at the lab temperature>>(THE DENSITY OF THE WATER WAS P = 0.9975412 +/- 0.0000001 g/mL (23o C) b. Use the propagation of error method to find the error in volume associated with each device. c. Calculate the percent uncertainty for each device, and percent error. For this...
Help with these practice problems please Dec 4. (20 pts) Convert the following,using proper sig figs....
Help with these practice problems please
Dec 4. (20 pts) Convert the following,using proper sig figs. a. 473900 mg to kg b. 5.443 cm/sec to m/hrs 4. (S pts) In Canada the speed limit on a highway is 100. Km/hour per. what would that be in miles per hour? (1mile-1.609 5. (5 pts) Why is the concept of scientific notation important? 6. (8 pts) How many significant figures are in each number a. 342000 b. 0.0450 c. 21876. 8 planets...
can someone help me with the first and the second matching questions A 10.00 ml pipette...
can someone help me with the first and the second matching
questions
A 10.00 ml pipette delivers portions of a diluted vinegar solution into 3 separate Erlenmeyer flasks, then the acetic acid is titrated using a standard solution of 0.060 M NaOH to a phenolphthalein end point. The results of the three trials are given below. What was the average M (mol/L) of the diluted vinegar? Trial # Vinegar Volume (mL) Initial Buret Volume (mL) Final Buret Volume (mL) 1...
1.A student delivered 11.85 mL (V1) of 2.49 % stock solution (M1) using a graduated pipette...
1.A student delivered 11.85 mL (V1) of 2.49 % stock solution (M1) using a graduated pipette into a 50.00 mL (V2) volumetric flask. Distilled water was added to the flask to the graduation mark and mixed well. Using the dilution equation (provided below), calculate the concentration of the diluted solution. (M1)(V1) = (M2)(V2) Report your answer to 3 decimal places. 2.Density is given by the equation density=mass/vol (d=m/V). Given that the density of magnesium is known to be 1.74 g/mL,...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask,...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
40. A student was trying to measure 20 ml of a solution using the pipette. However,...
40. A student was trying to measure 20 ml of a solution using the pipette. However, he did not notice that he has introduced air bubbles while filling the pipette. His colleague double-checked the volume and he found out that the volume dispensed was actually 18.5 ml instead of 20 ml. What is the percentage error of such a measurement? (2 points) Bonus Questions 41. H.PO, reacts with LiOH in a neutralization reaction. A standard solution of LiOH is prepared...
please answer all of them using sig figs !! urgent thanks in advance of calcium propionate,...
please answer all of them using sig figs !! urgent thanks in advance of calcium propionate, a food preserva the of 0.698-1 sorun 2) The pH of a 0.10-M solution of caffeine is 11.70. Determine K, for caffeine from these data: CHNO2 (aq)+ H2O(l) = CH.N.O.H+ (aq) + OH(aq) How much solid NaCH.CO, 3H,0 must be added to 0.300 L of a 0.50-M acetic acid solution to give a 5.00? (Hint: Assume a negligible change in volume as the solid...
TRIAL 1 TRIAL 2 TRIAL 3 TRIAL 4 15-O0 25.00 15.95.00 IS, O0 25.00 IS.00 25.00 Volume of HCl used (mL) Mean molarity...
TRIAL 1 TRIAL 2 TRIAL 3 TRIAL 4 15-O0 25.00 15.95.00 IS, O0 25.00 IS.00 25.00 Volume of HCl used (mL) Mean molarity of NaOH (M, four sig. figs!) 0.O68amo.0amo.o680.Ocbam 7.95m.30m24.90mL 0.15 mL Vinitial (mL, two decimals!) 18-10mL 23.65m 3a.30mL Vfinal (mL, two decimals!) 5600MC 4.1mL VNaOH used (mL, two decimals!)17.95mL I5.omL 13. ImL MNaeH (show calculations on back) HCI
9. Calculation - show all work, units and proper sig figs in final answer! Vinegar is 5.0% acetic acid (HC,H,O,) by mass and has a density of 1.02 g/mL. What volume, in ml, of vinegar is needed to completely neutralize 0.250 g of Al(OH), stained on your pants? (10 pts) NOTE: Molar mass of Al(OH), is 78.00g/mol. Molar mass of HC,H,O, is 60.05g/mol. mL of vinegar
Help with these practice problems please
Dec 4. (20 pts) Convert the following,using proper sig figs. a. 473900 mg to kg b. 5.443 cm/sec to m/hrs 4. (S pts) In Canada the speed limit on a highway is 100. Km/hour per. what would that be in miles per hour? (1mile-1.609 5. (5 pts) Why is the concept of scientific notation important? 6. (8 pts) How many significant figures are in each number a. 342000 b. 0.0450 c. 21876. 8 planets...
can someone help me with the first and the second matching
questions
A 10.00 ml pipette delivers portions of a diluted vinegar solution into 3 separate Erlenmeyer flasks, then the acetic acid is titrated using a standard solution of 0.060 M NaOH to a phenolphthalein end point. The results of the three trials are given below. What was the average M (mol/L) of the diluted vinegar? Trial # Vinegar Volume (mL) Initial Buret Volume (mL) Final Buret Volume (mL) 1...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
40. A student was trying to measure 20 ml of a solution using the pipette. However, he did not notice that he has introduced air bubbles while filling the pipette. His colleague double-checked the volume and he found out that the volume dispensed was actually 18.5 ml instead of 20 ml. What is the percentage error of such a measurement? (2 points) Bonus Questions 41. H.PO, reacts with LiOH in a neutralization reaction. A standard solution of LiOH is prepared...
please answer all of them using sig figs !! urgent thanks in advance of calcium propionate, a food preserva the of 0.698-1 sorun 2) The pH of a 0.10-M solution of caffeine is 11.70. Determine K, for caffeine from these data: CHNO2 (aq)+ H2O(l) = CH.N.O.H+ (aq) + OH(aq) How much solid NaCH.CO, 3H,0 must be added to 0.300 L of a 0.50-M acetic acid solution to give a 5.00? (Hint: Assume a negligible change in volume as the solid...
TRIAL 1 TRIAL 2 TRIAL 3 TRIAL 4 15-O0 25.00 15.95.00 IS, O0 25.00 IS.00 25.00 Volume of HCl used (mL) Mean molarity of NaOH (M, four sig. figs!) 0.O68amo.0amo.o680.Ocbam 7.95m.30m24.90mL 0.15 mL Vinitial (mL, two decimals!) 18-10mL 23.65m 3a.30mL Vfinal (mL, two decimals!) 5600MC 4.1mL VNaOH used (mL, two decimals!)17.95mL I5.omL 13. ImL MNaeH (show calculations on back) HCI
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