1. What is Molecular Weight?

Molecular weight (MW) is the sum of the atomic weights of all atoms in a molecule. It's expressed in g/mol (grams per mole) and is crucial for various biological and chemical calculations.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( MW \) — Molecular weight in g/mol
• \( base\_masses \) — Array of individual base masses in g/mol

Explanation: The calculator simply sums all the individual base masses you provide to calculate the total molecular weight.

3. Importance of Molecular Weight

Details: Molecular weight is essential for preparing solutions with specific molar concentrations, calculating reaction stoichiometry, and determining molecular properties.

4. Using the Calculator

Tips: Enter one base mass per line in the text area. All values must be positive numbers representing g/mol. The calculator will sum all valid entries.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The calculator expects all inputs in g/mol (grams per mole), which is the standard unit for molecular weight.

Q2: How precise are the results?
A: Results are rounded to 2 decimal places. For greater precision, include more decimal places in your input values.

Q3: Can I use this for modified bases?
A: Yes, just enter the total mass of each modified base (including modifications) as one of your input values.

Q4: What's the maximum number of bases I can calculate?
A: There's no strict limit, but extremely large numbers may cause performance issues.

Q5: How do I get the mass of individual bases?
A: You can find standard molecular weights in chemistry references or NEB's technical resources for nucleic acid bases.