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The entropy of hydration becomes additional negative from Na+ to Mg2+ to Al3+ though the coordination number is probably 6 in each case. Account for the trend in disorder. S?298 (J mol-1 K-1): Na + (aq), 60.3; Mg2 + (aq), -138; Al3 + (aq), -322.
Calculate number of moles at STP to 3 significant figures for the following: 1 liter of methane gas at 730 mm Hg and 25.0 C. Give answer as ______ x 10
a gas sample containing 1.56 mol at 25degc exerts a pressure of 390. torr. some gas is added to the same container and
In moist air the lighter water molecules have a greater rms average speed than the heavier nitrogen molecules. Compute the difference in the two average speeds at 30C
Air is 21 mole percent oxygen, that is, 0.21 atm oxygen at 1 atm. Suppose the pH of the water is 5.85 and that the concentration of iron(II) in the water is 8.97x 10-5 M, what is the potential of the corrosion reaction under the above conditions a..
How can ethidium ions cause mutations in DNA and what type of interactions exists between the DNA and ethidium ions?
Concentrated sulfuric acid is used as a catalyst for the esterification of acetic acid in the preparation of isopentyl acetate. Why is sulfuric acid needed if another acid, acetic acid, is already present
A solution contains 0.06054 M H3PO4 and 0.0386 M NaH2PO4. What volume of 0.05031 M NaOH is required to titrate 10.00 mL of this solution to the first end point
If 60.0 g of H3PO4 is dissolved in enough water to form 175 mL of solution, what is the molarity (M) of the solution
what volume of dry hudrogen would be produced understandard conditions when 0.250 g of magnesium reacts withexcess
a 1.6 g sample fo cono326h2o isused to prepare the complexconh34co3no3. assuming that all other reactants used in the
Calculate the molar enthalpy of combustion of cinnamaldehyde (delta H comb) (in kilojoules per mole of cinnamaldehyde).
Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42-
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