Find volume of H2SO4 and HCl in a molarity problem?

What volume, in milliliters, of a 2.00 M aqueous KOH solution would be needed to neutralize a) 110.0 mL of 0.0550 M aqueous H2SO4? b) 45.00 mL of 2.50 M aqueous HCl?

Select correct balanced net ionic equation

Select the correct balanced net ionic equation for each of the following reactions, occuring in aqueous solution. Input the associated letter labels, in order (i)-(iii), no spaces, no commas. e.g. GBF (i) 2HCl + Mg --> H2 + MgCl2 (ii) CuSO4 + CaCl2 --> CuCl2 + CaSO4 (iii) Cu(NO3)2 + Ni --> Cu + Ni(NO3)2 A. CuSO4 + Ca2+ --> Cu2+ + CaSO4 B. Mg + 2HCl --> Mg2+ + 2Cl- + H2 C. Cu2+ + Ni --> Cu + Ni2+ D. Ni + Cu2+ + 2NO3- --> Ni(NO3)2 + Cu E. Ni + Cu2+ + 2NO3- --> Ni2+ + Cu + 2NO3- F. Mg2+ + 2Cl- --> MgCl2 G. CaCl2 + Cu2+ --> Ca2+ + CuCl2 H. 2Cl- + Cu2+ --> CuCl2 I. Cu(NO3)2 + Ni --> Cu + Ni(NO3)2 J. 2H+ + Mg --> H2 + Mg2+ K. SO42- + Ca2+ --> CaSO4 L. none of th... click for more

Mass percentage of sodium chloride in a mixture

A sample of a mixture containing only sodium chloride and potassium chloride has a mass of 3.5650g. When this sample is dissolved in water and excess silver nitrate is added, a white precipitate (silver chloride) forms. After filtration and drying, this precipitate has the mass 7.9143g. What is the mass percentage of sodium chloride in the mixture?

Redox reaction in acidic solution

I need to separate these into half reactions, and indicate the changes in oxidation state, then give the overall equation. First I put water into a test tube, then I added potassium permangate. Next I added sulfuric acid, and after mixing that together I also added potassium iodide. I understand how to balance redox equations when given an equation and the product, but I don't know how to go about writing the equations for this since I'm not sure what the products are. This should be easy, but I'm just not getting it. If someone could show me the equations, and how to get them I would be very happy. thank you

Thermodynamics

I understand most of the thermodynamic concepts (enthalpies, hess's law etc.) but I do not know how to approach this problem? I need to understand this for my mid-term. Can you provide a step-by-step analysis. Problem A sample of 22.7 g of a nongaseous, unstable compound, X, is placed inside a metal cylinder with a radius of 8.00 cm, and a piston is carefully placed on the surface of the compound so that, for all practical purposes, the distance between the bottom of the cylinder and the piston is zero. (A hole in the piston allows trapped air to escape as the piston is placed on the compound; then this hole is plugged so that nothing inside the cylinder can escape.) The piston-and-cy... click for more