Write ionic equations to show if/how these substances ionize/dissociate into ions when placed in water. A) Na3PO4 B) MgCO3 Consider the reaction when aqueous solutions of sodium hydroxide and copper(II) acetate are combined. Write the net ionic equation for this reaction. ...
What is the balanced chemical equation for the reaction used to calculate enthalpy degrees F, of MgCO3(s)? Given the standard enthalpy changes for the following two reactions 4 C ( s ) + 5 H 2 ( g ) C 4 H 10 ( g ) , H = 125.6 k J C 2...
What is the change in enthalpy when 5.32 mol CO2 reacts with excess MgO? MgCO3(s) \to MgO(s) + CO_2(g) \Delta H_{rxn} = 117.3\ kJ Given that the molar enthalpy of combustion of propanoic acid is -1527.2 kJ/mol, when the enthalpy change is written as ...
a- The voucher is preferably with 6-12 months validity starting from the date of June, -证件更好地是以6-12个月有效性从6月开始日期,[translate] aSolubility and Stability of Nesquehonite (MgCO3 ·3H2O) in Mixed NaCl + MgCl2, Nesquehonite (MgCO3的可溶性和稳定 ·3H2O)在混杂NaCl +氯化镁...
根据GB/T29906-2013进行抹面胶浆与模塑板拉伸粘结强度（原强度）试验，得到以下一组数据：539N、655N、509N、522N、489N、517N，破坏状态均为模塑板破坏，试样尺寸为50mmx50mm，则该抹面胶浆与模塑板拉伸粘结强度（原强度）为（）MPa。
Like many thermodynamic quantities, enthalpy is a state function, or a function that only relies on the starting and ending position of the states. For these types of functions, the path between the two points does not change the description of the system....
What is the emf of the cell when [ Ni^{2+} ] = 0.194 M and [Zn^{2+} ] = 0.905 M? Which of the following species has the highest entropy (S ) at 25 C? A. CH3OH(l) B. CO(g) C. MgCO3(s) D. H2O(l) E. Ni(s) ...
What is the standard enthalpy of formation of MgCO3(s)? MgO(s) + CO2(g) = MgCO3(s) dH = -100.7 kJ Use the following dHf (kJ/mol): MgO(s) = -601.6, CO2(g) = -393.5 a) 107.4 kJ b) -308.8 kJ c) -894.4 kJ d...
What is the solubility, in mol/L, of MgCO3 in a 0.65 mol/L solution of MgCl2 if the Ksp of MgCO3 is 2.5 x 10-5? What is a solute solvent reaction? How does the speed of stirring affect the solubility of the solute? Is PbCl2 soluble in water?
Water is regarded to be a universal solvent due to its ability to dissolve a wide variety of compounds, most especially those that are polar. This capability is due to its polarity and ability to form hydrogen bonds with highly electronegative atoms such as O, N, and F and with partially ...