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What are the chemical and physical properties of litmus? What allows it the ability to act as an acid-base indicator?
Predict the products of their eliminations, and explain the large difference in the ease of elimination.
What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
Increased by a factor of 3. How is the mutual gravitational force affected in each case?
Solid Na2SO4 is added slowly to a solution that is 0.10 M in Pb(NO3)2 and 0.10 M in Ba(NO3)2. In what order will solid PbSO4 and BaSO4 form? Calculate the percentage of Ba2+ that precipitates just before PbSO4 begins to precipitate.
calcium malonate, the salt of malonic acid, is found in beetroot and is known as an inhibtor of the citric acid cyle. if a sample of beetroot disolved in water has a pH of 8.20,
We sometimes use complex formation to make relatively insoluble salts more soluble. For instance, AgCl(s) has Ksp=1.6x10^-10. Silver ions can form complexes with the thiosulfate ion
a solution is prepared that contains 7.050 g of hno2 in 1.000 kg of water. its freezing point is found to be -0.2929
If only atmospheric CO2 at 380 ppm and limestone dust are present in the atmosphere to alter the pH from a neutral value, and if each raindrop has a volume of 0.02 cm^3, what mass of calcium is present in each raindrop
what mole ratio of molecular chlorine to molecular oxygen would result from the breakup of compound Cl2O7 into its constituent elements.
Oxygen gas effuses at a rate that is 1.49 times that of an unknown gas (at the same temperature). What is the identity of the unknown gas?
consider the following ksp values for metal sul?desmgc2o4 8.6 times 10-5coc2o4 2.7 times 10-9cuc2o4 2.9 times
Calculate the temperature change which will be caused by the following process: 0.640 moles of NH4Cl are dissolved in 1.00 L of water.
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