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Develop a method for testing hydrogen peroxide solutions available at the supermarket or drugstore. Devise strategies for testing the stability of these solutions in various storage conditions: temperature, sunlight, etc.
molecular formula of a compound.a compound of p and f was analyzed as follows heating 0.2324 g of the compound in a
a sample of cacl2 of 11.8 grams is dissolved in water of 121 grams with both substances at the normal room
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2 /H3O . Draw the structure of the alkyne (containing only carbon and hydrogen atoms).
AgCl is a sparingly soluble salt, with a solubility of about 10-5 M in pure water. Adding KCN increases the solubility of AgCl because:
A new soft drink on the market is prominently labeled as "caffeine-free". Based on the nature of complaints filed by several consumers, it appears that the "caffeine-free" claim might actually be fraudulent.
The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67°C into 1.00 g of steam at 100°C
Tooth enamel in mainly hydroxyapatite, Ca10(PO4)6(OH)2. If 1.117g of tooth enamel reacts with acid to give 1.111g of calcium chloride, what is the percentage of hydroxyapatite in the tooth enamel sample
A 85.0 mL sample of 0.175 M. proprionic acid, HC3H5O2 (Ka = 1.30 X 10-5) is titrated with 0.125 M. KOH. What is the pH after 50.0 mL of the KOH have been added
add the angular wave function for a 2s electron of carbon to that of a 2py electron of the same carbon atom. subtract
One kilogram of steam in a piston/ cylinder device undergoes the following changes of state. calculate Q and W for each step
If 0.20 moles of CaCl2 is added to 200.00 ml of a 0.50M NaCl solution, calculate the final concentration of [Cl-] in the solution.
A volume of 80.0 mL of a 0.520 it M HNO_3 solution is titrated with 0.590 it M KOH. Calculate the volume of KOH required to reach the equivalence point?
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