- Element Atomic Mass Determine The Molecular Mass And Its Uncertainty For Ch Ch Cooh Significant Figures Are Graded Fo 1 (21.95 KiB) Viewed 9 times
The total volume required to reach the endpoint of a titration required more than the 50 mL total volume of the buret. An initial volume of 49.46 + 0.04 mL was delivered, the buret was refilled, and an additional 1.57 + 0.04 mL was delivered before the endpoint was reached. The titration of a blank solution without the analyte required 0.58 0.04 mL. Calculate the endpoint volume corrected for the blank and its absolute uncertainty. Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your calculations. volume: mL + + mL
Five calcite, CaCO3 (MM 100.085 g/mol), samples of equal mass have a total mass of 11.9 + 0.1 g. What is the average mass and absolute uncertainty of calcium in each sample? Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass. average mass: mg Incorrect absolute uncertainty: + 8.01 mg