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(a) Show that the formula mass of NaCl is 58.442 +/- 0.006 g/mol. (b) To prepare...

(a) Show that the formula mass of NaCl is 58.442 +/- 0.006 g/mol.

(b) To prepare a solution of NaCl, you weigh out 2.634 (+/- 0.002) g and dissolve it in a volumentric flask whose volume is 100.00 (+/- 0.08) mL. Express the molarity of the solution, along with its uncertainty, with an appropriate number of digits.

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