How many moles are in 36 grams of water (H2O)?

How many moles are in 36 grams of water (H2O)?

Step 1: Find the molar mass of water (H2O). Water has 2 hydrogen atoms and 1 oxygen atom.
Step 2: Calculate the mass of hydrogen: 2 hydrogen atoms * 1 gram/mole = 2 grams/mole.
Step 3: Calculate the mass of oxygen: 1 oxygen atom * 16 grams/mole = 16 grams/mole.
Step 4: Add the mass of hydrogen and oxygen to get the molar mass of water: 2 grams/mole + 16 grams/mole = 18 grams/mole.
Step 5: Use the formula for number of moles: Number of moles = mass / molar mass.
Step 6: Plug in the values: Number of moles = 36 grams / 18 grams/mole.
Step 7: Calculate the number of moles: 36 grams / 18 grams/mole = 2 moles.

Molar Mass Calculation – Understanding how to calculate the molar mass of a compound by summing the atomic masses of its constituent elements.
Mole Concept – Applying the definition of a mole to convert mass into moles using the formula: moles = mass / molar mass.