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Write the complete balanced molecular, ionic, and net ionic equations for the reaction of potassium phosphate + aluminum nitrate. Which product, if any, is a precipitate?
A mixture of helium and neon gases at 237 K contains three times the number of helium atoms as neon atoms. The concentration (n/V) of the mixture is found to be 0.150 mol/L. Assuming ideal behavior, what is the partial pressure of helium
Calculate the pH of 0.375 L of a 0.18 M acetic acid-0.29 M sodium acetate buffer before and after the addition of (a) .0060 mol of KOH and .0060 mol of HBr
A solution is prepared by dissolving 22.0 g of NaOH in 118.0 g of water. the NaOH solution has a density of 1.15 g/mL. a)what is the mass percent (m/m) of the NaOH solution b)what is the total volume(mL) of the solution c)what is the molarity (M) ..
Consider the diprotic acid mercaptoacetic acid, where the fully protonated form can be denoted by H2A. Calculate the pH of the solutions below.
A solution is 0.05 M in Cr2O7^-2 and 0.003 M in Cr3-. If the pH is 4.0, What is value of the potential of the half reaction?
calculate the standard Molar Enthalpy Change for the reaction in the reaction endothermic or exothermic
What is the pH of a solution that is 6.5×10-2M in potassium propionate and 8.5×10-2M in propionic acid?
Common commercial acids and bases are aqueous solutions with the following properties: nitric acid (HNO3), density 1.42 g/cm3 and 61% solute by mass. Calculate the molarity.
the epa limit for lead in the water supply is 15 parts per billion by mass. calculate the number of lead ions present
The absorbance of solutions containing Cr as dichromate Cr2O7-2 in 1.0M H2SO4 were measured in a 5cm cell. The following results were obtained
Sodium methoxide CH3ONa is a weaker base than BuLi or nBuLi butyllithium. Recommend an explanation why it is not surprising to find that a weaker base is sufficient to prepare the Horner-Emmons-Wittig reagent.
Ethyl chloride vapor decomposes by the first-order reaction C2H5Cl --> C2H4 + HCl The activation energy is 249 kJ/mol and the frequency factor is 1.6 X 10^14 s^-1 The rate constant at 730 K is 2.4 x 10^-4 s^-1. 1)
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