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A solution is prepared by dissolving 4.9g sucrose in 175g water. Explain what the boiling point of this solution is. Sucrose is s non electrolyte.
A student obtained the following data from this experiment. Calculate the molar mass of this unkown liquid.
3-nitrophthalic acid will be first converted into 3 nitrophthalhydrazide by reacting with 25% hydrazine. Reduction of the nitro group to an amino group with sodium hydrosulfite affords luminol.
Find out the mass of the copper that was removed from the penny. Presuming excess nitric acid, Compute the grams of copper (II) nitrate that must have formed in the reaction
Draw both resonance structures of the allylic cation formed when one molecule of adds to the symmetrical diene, 3,4-dimethylhexa-2,4-diene.
a sample of air contains 78.08 nitrogen 20.94 oxygen 0.05 carbon dioxide and 0.930 argon by volume. how many
What is the ratio of acetate to acetic acid? What is the ratio of ethylamine to ethylammoniun ion?
A solution of ammonia and water contains 4.20×10^25 water molecules and 6.90×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
2HI(g) ? H2(g) + I2(g) Keq = 0.016. Initially a container contains 0.46 M HI and no product. What is the equilibrium concentration of H2
What is the work done in terms of the system?
How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14C? [hint: ignore any effects by the calorimeter]
A diprotic acid, H2A, has pKs 8.4 and 3.5. 50.0 mL of 0.10M of the diprotic acid, H2A, is titrated with 0.20 M NaOH. What is the Ve (i.e. the first equivalence point)?
Calculate the pH of the 0.20 M NH3/0.24 M NH4Cl buffer. B)What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 55.0 mL of the buffer?
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