Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u).
Enter a valid molecular formula and press the calculate button to determine the correct molar mass. Atomic mass values for individual elements can be obtained from the Periodic Table of the Elements. Results are expressed in terms of grams/mol.
分子式輸入
常用分子式示例
計(jì)算結(jié)果
輸入分子式開(kāi)始計(jì)算
This molarity calculator is a tool for converting the mass concentration of any solution to molar concentration (or recalculating grams per ml to moles). You can also calculate the Mass, Volume or Concentration required for a solution:
mass of a compound required to prepare a solution of known volume and concentration,
volume of solution required to dissolve a compound of known mass to a desired concentration,
concentration of a solution resulting from a known mass of compound in a specific volume.
mass of a compound required to prepare a solution of known volume and concentration,
volume of solution required to dissolve a compound of known mass to a desired concentration,
concentration of a solution resulting from a known mass of compound in a specific volume.
參數(shù)輸入
輸入任意兩個(gè)值和分子量，自動(dòng)計(jì)算第三個(gè)值
計(jì)算結(jié)果
輸入?yún)?shù)開(kāi)始計(jì)算
計(jì)算公式
n = m / M
C = n / V
∴ C = m / (M × V)
Calculate the dilution required to prepare a stock solution. The dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
稀釋參數(shù)
C?V? = C?V? · 填入三個(gè)值計(jì)算第四個(gè)
起始溶液 (母液)
最終溶液 (工作液)
計(jì)算結(jié)果
輸入?yún)?shù)開(kāi)始計(jì)算
連續(xù)稀釋
In Vivo Dissolution Calculator can automatically calculates the dosage, administration volume, total dosage and concentration for a single animal, supports laboratory animals such as mice and rats, and is suitable for pharmacological and toxicological studies.
實(shí)驗(yàn)參數(shù)
溶劑比例 (%)
配方結(jié)果
輸入實(shí)驗(yàn)參數(shù)開(kāi)始計(jì)算
The pH value is an essential factor in chemistry, medicine, and daily life. With this pH calculator, you can determine the pH of a solution in a few ways. It can convert pH to H+, as well as calculate pH from the ionization constant and concentration.
Our calculator may ask you for the concentration of the solution. If you don't know, you can calculate it using our concentration calculator. You can also use the solution dilution calculator to calculate the concentration of ions in a diluted solution.
pH計(jì)算參數(shù)
計(jì)算結(jié)果
輸入?yún)?shù)開(kāi)始計(jì)算
pH 標(biāo)尺參考
0
2
4
6
7
8
10
12
14
酸性
中性
堿性
計(jì)算原理
弱酸: Ka = [H?][A?]/[HA]
弱堿: Kb = [OH?][BH?]/[B]
pH = -log??[H?]
pH + pOH = 14 (25°C)