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Balance the combustion reaction of chrysene (C18H12) at 298K.
C18H12(s)+ O2(g) CO2(g) + H2O(l)
What is the value of ng for the combustion reaction?
ng = mol
What is Hcomb of chrysene if Ecomb = -8942.6 kJ/mol?
Hcomb = kJ/mol
What is the heat of formation of chrysene?
Hf = kJ/mol
Ammonia can be made by reacting calcium cyanamide (CaCN2) with water as shown: CaCN2 + 3 H2O => CaCO3 + 2 NH3. How many grams of water are required to react with 212.9 g of calcium cyanamide
Trimyristin and myristic acid have similar melting points. based on melting point measurements only, how could one know that the product isolated at the end of this experiment is truly myristic acid and not unreacted trimyristin
As a part of this exercise, you will need to prepare 100 mL of a 0.1 M phosphate buffer at pH 7.5, and you need to calculate the amounts of NaH2PO4 and K2HPO4 that you need to use in your buffer.
a toxicologist studying mustard gas sch2ch2cl2 a blistering agent prepares a mixture of 0.675 m scl2 and 0.973 m c2h4
Calculate the pH at the equivalence point in titrating 0.120 M solutions of each of the following with 7.0×10-2 M NaOH. a) lactic acid (CH_3CH(OH)COOH)
explain how society depends on the accuracy and precision of measurements for products sold by the retail industry such
A portion of this solution was found to have an absorbance of 0.15 under the same conditions that were used to generate the given absorbance vs. [Cu2+] graph. What was the concentration of Cu2+ ions in the original sample
Calculate the freezing point depression constant (Kf) of phenol ? c)If 24.5899g of unknown was added to 838.72g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
How many grams of copper (lll) nitrate would be produced from 4.30 g of copper metal reacting with excess nitric acid
Calculate thePH at the equivalence point in titrating 0.100 M solutions of each of the following with 9.0×10^ 2 M NaOH... calculate the ph for HCLO2
Hydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
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