Part 1a: A student weighs 0.1256 g of NaCl (MM = 58.44277 g/mol) on the analytical balance, transfers the solid to a 100

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Part 1a:
A student weighs 0.1256 g of NaCl (MM = 58.44277 g/mol) on theanalytical balance, transfers the solid to a 100.00 mL volumetricflask, and dilutes to the mark with distilled water. Calculate:
Weight of NaCl = 0.1256 g ± (absolute uncertainty)
Volume of solution = 100.00 mL ±
Moles NaCl= ±
Molarity of NaCl= ±
Relative uncertainty (%) =
Part 1b:
A second student weighs 0.13 g of NaCl on a top loading balance,transfers the solid to a beaker and adds 100.0 mL of distilledwater measured in a graduated cylinder.
Weight of NaCl = 0.13 g ±
Moles NaCl= ±
Molarity of NaCl= ±
Relative uncertainty (%) =
Part 2a:
A sample containing HCl is titrated with NaOH:
HCl + NaOH à H2O + NaCl
A student transfers 25.00 mL of HCl with a volumetric pipet toan Erlenmeyer flask, adds phenolphthalein, and titrates with NaOH(0.1000 ± 0.0004M) using a buret, to the endpoint, which requires30.98 mL of NaOH.
Volume of HCl = 25.00 mL ±
Molarity of NaOH = 0.1000 M±
Volume NaOH = 30.98 mL ±
Moles NaOH = ±
Moles HCl= ±
Molarity HCl= ±
Relative uncertainty (%) =
Part 2b:
A student transfers 25.00 mL of HCl with a graduated cylinder toan Erlenmeyer flask, adds phenolphthalein, and titrates with NaOH(0.1000 ± 0.0004M) using a buret, to the endpoint, which requires30.9 mL of NaOH. (The student only reports value of titrant to onedecimal place)
Volume of HCl = 25.00 mL ±
Molarity of NaOH = 0.1000 M ±
Volume NaOH = 30.9 mL ±
Moles NaOH = ±
Moles HCl = ±
Molarity HCl= ±
Relative uncertainty (%)
Part 3: Multiple trials
Given the following data, calculate the average, averagedeviation and percent deviation using two trials and again forthree trials:
Molarity NaOH
Trial 1
0.1034
Trial 2
0.1056
Trial 3
0.1045
Average of Trial 1+2:_____________
Average Deviation Trial 1+2: ____________
Percent Deviation Trial 1+2: ____________
Average of Trial 1-3:_____________
Average Deviation Trial 1-3: ____________
Percent Deviation Trial 1-3: ____________