Question

using the periodic table, find the molar mass of oxygen gas (o₂). write your answer to the hundredths place. round if necessary. g/mol

Explanation:

Step1: Identify oxygen's atomic mass

From periodic - table, oxygen (O) has an atomic mass of approximately 15.9994 g/mol.

Step2: Calculate molar mass of O₂

Oxygen gas is O₂, so molar mass = 2×atomic mass of O.
$M = 2\times15.9994$ g/mol.
$M=31.9988$ g/mol.

Step3: Round to hundredths place

Rounding 31.9988 g/mol to the hundredths place gives 32.00 g/mol.

Answer:

32.00 g/mol