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If the density of a certain aqueous solution is 1.17 g/mL and the solution is 3.57% by mass NaOH. Explain how many mL of this solution would you require to use in order to prepare 100.0mL of 0.150 M NaOH?
At room temperature (about 20degree C) milk turms sour in about 64 hours. In a refrigerator at 3 degree C, milk can be stored for about three times as long before turning sour.
An elemental analysis of X shows that the mass percentage composition of the compound is 26.86% C and 2.239% H, with the remainder being oxygen. A mass spectrum of X yields a molar mass of 90.0 g/mol. Write the empirical formula of X.
A certain quantity of electricity is passed through a series of solutions containing AgNO3, CrCl3, ZnSO4, and CuSO4. a) If 1.00 g of Ag(s) was deposited in the first solution, how many grams of metal were deposited in each of the remaining solution..
Calculate concentrations of H30+ and the pH of each acidic solution. Since HCl is a monoprotic acid, the H30+ concentrations are equivalent to HCl. First do equation: (M con)(V con)=(M dil)(V dil)
Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.
A reaction has a rate constant of 1.21×10-4 at 25 degrees C and 0.232 at 79 degrees C. The activation barrier for the reaction is 122 KJ/mol. What is the value of the rate constant at 18 degrees C
The initial rate of a reaction which is first order in A is 2.0 x 10^-6 M/s when the initial concentration is 0.0050 M. What is the first order rate constant
The molar mass of cellulose is approximately 6.0 x 10^5 g/mol and the molar mass of a soluble starch is on the order of 4.0 x 10^3 g/mol. The monomer unit in both of these molecules has the emperical formula C6H10O5.
What volume of each of the following acids will react completely with 50.31 mL of 0.146 M NaOH?
The "roasting" of 48.7 g of ZnS at constant pressure gives off 220. kJ of heat. Calculate the DH for this reaction. 2ZnS(s) + 3O2(g) ® 2ZnO(s) + 2SO2(g)c
A graduated cylinder contains 155 mL of water. A 15.0 g piece of iron (density = 7.86 ) and a 20.0 g piece of lead are added. What is the new water level in the cylinder?
At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.21. What is the Ksp of the salt at 22 °C?
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