1. What is Moles to Grams Conversion?

The moles to grams conversion is a fundamental stoichiometric calculation that converts between the amount of substance (moles) and mass (grams) using the molar mass of the compound. For water (H₂O), the molar mass is approximately 18 g/mol.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( g_{water} \) — Mass of water in grams
• \( n_{water} \) — Amount of water in moles
• 18 — Molar mass of water (H₂O) in g/mol

Explanation: This calculation uses the molar mass of water (18.015 g/mol, rounded to 18 g/mol for simplicity) to convert between moles and grams.

3. Importance of Stoichiometric Calculations

Details: Stoichiometric conversions between moles and grams are essential in chemistry for measuring reactants and products in chemical reactions, preparing solutions, and quantitative analysis.

4. Using the Calculator

Tips: Enter the amount of water in moles. The value must be positive. The calculator will automatically compute the equivalent mass in grams.

5. Frequently Asked Questions (FAQ)

Q1: Why is the molar mass of water approximately 18 g/mol?
A: Water (H₂O) has 2 hydrogen atoms (1.008 g/mol each) and 1 oxygen atom (16.00 g/mol), totaling approximately 18.015 g/mol.

Q2: When would I need to convert moles of water to grams?
A: This conversion is useful when preparing aqueous solutions, calculating reaction yields, or measuring water in laboratory experiments.

Q3: How accurate is this calculation?
A: The calculation uses 18 g/mol for simplicity. For precise work, use 18.015 g/mol as the molar mass of water.

Q4: Can this calculator be used for other substances?
A: No, this specific calculator is only for water. Other substances have different molar masses.

Q5: What's the difference between moles and grams?
A: Moles measure the number of particles (6.022×10²³ molecules per mole), while grams measure mass. The molar mass connects these two units.