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For the following salts, determine the mass of solid that dissolves in 421 mL of water at 25 oC.
a.) If the molar solubility of lead(II) chloride is 1.6E-2, what mass of solid lead(II) chloride dissolves in 421 mL of water at 25 oC? (in grams)
b.)If the molar solubility of magnesium carbonate is 2.6E-3, what mass of solid magnesium carbonate dissolves in 421 mL of water at 25 oC? (in grams)
c.) If the molar solubility of nickel(II) hydroxide is 5.2E-6?, what mass of solid nickel hydroxide dissolves in 421 mL of water at 25 oC? (in grams)
a certain protein was found to contain 0.639% zinc by mass. Determine the minimum molecular mass of the protein.
What is the molecular weight of the compound? (bpt ccl4 = 76.5 C, Kb = 5.03 C/m)
Calculate the pH of an HCl solution if 16.5 mL of this HCl solution is titrated with a 0.454 M NaOH and it took 5.65 mL of the NaOH to reach the equivalnce point.
Identities of the components in a mixture may be determined by a technique called spiking. Suppose you had run a gas chromatogram on your product and had then deliberately added a drop of a known sample of 3-methylcyclohexene to a drop of your pro..
Consider a cylinder filled with air with a piston and spring arrangement on top. The external pressure is 1 bar, the initial temperature of the air in the cylinder is 25 C.
At equilibrium 4.51e-02 mol of H2 is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value R..
A solid laboratory sample contains two substances, lead(II) carbonate and potassium carbonate. A 5.000 g sample of this unknown was treated with aqueous nitric acid to dissolve it, then, after further treatment to adjust the acidity
predict whether a reaction will occur in each of the following. if so write the balanced chemical equation as well as the net ionic equation. Phases are all required for all species.
Precisely 1.00 x 10-3 mol of CaCl2, 0.100 mol of NaOH and 0.100 mol of Na3T were mixed as well as then diluted to 1.00 L. Explain what was the concentration of Ca(2+) in the resulting mixture
How do you understand the following terms: "carbon loading" and "bonding density" for RP HPLC packing material? Which one is the most important for HPLC? Explain.
The flask shown here contains 10.0mL of HCl as well as a few drops of phenolphthalein indicator. The buret contains 0.170 M NaOH. Explain what volume of NaOH is needed to reach the end point of the titration
1) Select all of the factors which affect the rates of chemical reactions.
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