Question

fill in the blank
fill in the blank with the correct words:

1. the molar mass of water (h2o) is __________ g/mol
2. you find the molar mass of a compound by adding the __________ of all

the atoms present.

1. the molar mass of carbon dioxide (co2)
2. the unit for molar mass is __________.
3. the periodic table provides the __________ of each element, which are

needed for calculating molar mass.
word bank: atomic masses, two, g/mol, molar mass, atomic masses

Explanation:

Step1: Calculate molar mass of H₂O

Atomic mass of H = 1.008 g/mol, O = 16.00 g/mol.
Molar mass = $2\times1.008 + 16.00 = 18.016$ g/mol (rounded to 18.02 or 18)

Step2: Identify compound molar mass method

Molar mass of compound = sum of atomic masses of atoms.

Step3: Calculate molar mass of CO₂

Atomic mass of C = 12.01 g/mol, O = 16.00 g/mol.
Molar mass = $12.01 + 2\times16.00 = 44.01$ g/mol

Step4: Recall molar mass unit

Standard unit for molar mass is g/mol.

Step5: Recall periodic table data

Periodic table lists atomic masses of elements.

Answer:

1. 18.02 (or 18)
2. atomic masses
3. 44.01 (or 44) g/mol
4. g/mol
5. atomic masses