由摩尔浓度求质量计算器
根据摩尔浓度和体积计算所需溶质的质量。
M
L
g/mol
Mass of Solute Needed
14.610 g
Moles Needed0.2500 mol
Mass of Solute Needed vs Desired Molarity
公式
## How to Calculate Mass from Molarity ### Formula **mass = M × V × Mw** First find moles (M × V), then convert to grams by multiplying by molar mass.
计算示例
How many grams of NaCl (58.44 g/mol) for 500 mL of 0.5 M solution?
- 01Moles = 0.5 × 0.5 = 0.25 mol
- 02Mass = 0.25 × 58.44 = 14.61 g
常见问题
How do I find molar mass?
Add atomic masses of all atoms in the formula. For NaCl: Na (22.99) + Cl (35.45) = 58.44 g/mol.
What if my volume is in mL?
Divide mL by 1000 to get liters. For example, 250 mL = 0.25 L.
Can I use this for buffer preparation?
Yes. Calculate each buffer component separately using its own molar mass.
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