要计算化合物的摩尔质量，请输入其公式并单击“计算”。 在化学式中，你可以使用： 任何化学元素. 元素符号首字母大写，其余小写。 Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. 括号 () 或方括号 []。 常见化合物的名称。 摩尔质量的计算举例： NaCl, Ca (OH)2, K4 [Fe (CN)6], CuSO4*5H2O, 硝酸, 高锰酸钾, 乙醇, 果糖, 咖啡因, 水 . 摩尔质量计算器还显示常见的化合物名称、希尔公式、元素组成、质量百分比组成、原子百分比组成，并允许从重量转换为摩尔数，反之亦然。 要计 …

To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use: Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. parenthesis () or brackets []. Common compound names.

There are 4 easy steps to finding the molar mass of PH2O3 based on its chemical formula.

P2O3 + H2O = PH2O3 + H is a Double Displacement (Metathesis) reaction where one mole of Phosphorus Trioxide [P 2 O 3] and three moles of Water [H 2 O] react to form two moles of Hydrogen Phosphonate Ion [PH 2 O 3] and two moles of Hydrogen [H]

磷酸的oh键上h下来接到h-o-c-,另一端接成h-o-c-o-ph2o3,当然c上还有其他基团。 实际上发生了一个C=O键的加乘反应得到一个磷酸脂，而一般的无机酸脂有剧毒，醇类则是一个单纯的脂化反应得到一个磷酸脂，故其会有剧毒。

Formula in Hill system is H2O3P: Computing molar mass (molar weight) To calculate molar mass of a chemical compound enter its formula and click 'Compute'.

指令. 若需平衡化学方程式，输入一个化学反应方程式，然后按平衡键。平衡方程将出现在上方。 元素中的第一个字符使用大写字母，第二个字符使用小写字母。例子：Fe, Au, Co, Br, C, O, N, F。

Phosphorus (III) oxide, also known as phosphorus trioxide, is a chemical compound. Its chemical formula is P 2 O 3 or P 4 O 6. It contains phosphorus in its +3 oxidation state. It contains phosphorus and oxide ions. It is a white, waxy solid that can absorb water. It reacts with water to make phosphorous acid.

使用本计算器来平衡p2o3 + ca(oh)2 + h2o = ca(ph2o3)2化学方程式或反应！

Computing molar mass step by step; First, compute the number of each atom in H(PH 2 O 3): H: 3, P: 1, O: 3. Then, lookup atomic weights for each element in periodic table: H: 1.00794, P: 30.973762, O: 15.9994