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H3PO4 Acid is a set of tools for phosphoric acid mixing, neutralization, and solution preparation in the laboratory, and for field and office calculation. The calculator helps computing the volume of raw acid and water to be mixed in order to achieve specific acid concentration. When acid neutralization is needed, the calculator will help calculate the quantity of neutralizing agent based on acid concentration and volume. For lab application, the calculator helps computing the volume of acid of specific concentration needed to mi...

Stoichiometry Pro targets common stoichiometric tasks: balancing chemical reactions of unlimited number of components, finding molar masses, moles and masses of reactants and products and defining the limiting reagent, based on chemical formulas, stoichiometric coefficients, and any quantitative data provided. The app analyses chemical reaction typed in “Reaction” field, balances it (if possible), finds molar masses and builds table with list of compounds (reagents and products coloured differently), for quantitative data input. A...

目前工业上应用的合金种类数以千计，现只简要地介绍其中几大类。 (1)耐蚀合金 耐蚀合金 金属材料在腐蚀性介质中所具有的抵抗介质侵蚀的能力，称金属的耐蚀性。纯金属中耐蚀性高的通常具备下述三个条件之一： ①热力学稳定性高的金属。通常可用其标准电极电势来判断，其数值较正者稳定性较高;较负者则稳定性较低。耐蚀性好的贵金属，如Pt、Au、Ag、Cu等就属于这一类。 ②易于钝化的金属。不少金属可在氧化性介质中形成具有保护作用的致密氧化膜，这种现象称为钝化。金属中最容易钝化的是Ti、Zr、Ta、Nb、Cr和Al等。 ③表面能生成难溶的和保护性能良好的腐蚀产物膜的金属。这种情况只...

Ever needed to balance a chemical equation but it is too difficult to do it by hand? This application will help you to balance the equation in the blink of an eye. You just need to type the reactants and the products and click the button 'balance'. Sample Equations Fe + Cl2 = FeCl3 KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 C6H5COOH + O2 = CO2 + H2O H3PO4 + Ca(OH)2 = CaHPO4.2H2O Cu + CO2 + O2 + H2O = CuCO3.Cu(OH)2 You just need to use lowercase letters to indicate chemical element symbols. Fe -> fe KMnO4- > kmn...

目前工业上应用的合金种类数以千计，现只简要地介绍其中几大类。 (1)耐蚀合金 耐蚀合金 金属材料在腐蚀性介质中所具有的抵抗介质侵蚀的能力，称金属的耐蚀性。纯金属中耐蚀性高的通常具备下述三个条件之一： ①热力学稳定性高的金属。通常可用其标准电极电势来判断，其数值较正者稳定性较高;较负者则稳定性较低。耐蚀性好的贵金属，如Pt、Au、Ag、Cu等就属于这一类。 ②易于钝化的金属。不少金属可在氧化性介质中形成具有保护作用的致密氧化膜，这种现象称为钝化。金属中最容易钝化的是Ti、Zr、Ta、Nb、Cr和Al等。 ③表面能生成难溶的和保护性能良好的腐蚀产物膜的金属。这种...