Question

what is the mass of h2o (water) according to the periodic table? hint: two atoms of hydrogen and one atom of oxygen in every molecule of water... so add them together.
1 h hydrogen 1.008
8 o 15.9994 oxygen
1 h hydrogen 1.008
water molecule
about 1 grams per mole
about 16 grams per mole
about 18 grams per mole

Explanation:

Step1: Identify atomic masses

Hydrogen (H) atomic mass: \( 1.008 \), Oxygen (O) atomic mass: \( 15.9994 \).

Step2: Calculate total mass for \( H_2O \)

Water has 2 H and 1 O. So total mass = \( 2 \times 1.008 + 15.9994 \).
Calculate \( 2 \times 1.008 = 2.016 \).
Then \( 2.016 + 15.9994 = 18.0154 \), approximately 18 g/mol.

Answer:

about 18 grams per mole