Question

molar mass of baking soda (nahco₃), g/mol how to get the value: calculate (use the periodic table) the value (the number that you measured or calculated): 84.007g/mol show the work: how did you calculate the value (what did you enter in your calculator)

Explanation:

Step1: Identify atomic masses

From the periodic table, atomic mass of Na = 22.99 g/mol, H = 1.008 g/mol, C = 12.01 g/mol, O = 16.00 g/mol.

Step2: Calculate molar mass of NaHCO₃

$M = 22.99+1.008 + 12.01+(3\times16.00)$
$M=22.99 + 1.008+12.01 + 48.00$
$M = 84.008\ g/mol$ (close to the measured 84.007 g/mol due to rounding differences in atomic - mass values used)

Answer:

84.008 g/mol