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Other than performing the purity test, research and explain one different method that can be used to determine the purity of a compound.
Problem- Physiological saline, NaCl solution used in intravenous injections has a concentration of 0.90 % NaCl (mass/mass). How many grams of NaCl are needed to prepare 500. mL of this solution (assume the density of the saline solution is 1.0 g/m..
A .100g sample of a carbon, hydrogen, oxygen compound was burned in a stream oxygen and produced 0.220 g CO2 and .239 g H2O. what is the mass percent of hydrogen in the sample
How many metric tons of 7 %-S coal would be needed to yield the H2SO4 required to produce a 8.4 cm rainfall of pH 2.00 over a 100 km2 area
Phosphorus-33 is a radioactive isotope which decays by beta emission. What is the complete nuclear equation for this reaction and what is occurring.
a corrosionist pipetted a 50.00 ml sample of an unknown brine and titrated it with 37.64 ml of 0.1024 m silver nitrate
why is it possible to separate the product 6-ethoxycarbonyl-35-diphenyl-2-cyclohexenone from sodium hydroxide using
A constant electric current deposits 0.365 g of silver metal in 12960 seconds from a solution of silver nitrate. What is the current? What is the half reaction for the deposition of silver. Molar mass of Ag is 107.
the molar heat of fusion is 6.02 kJ mol-1, obtain an expression in terms of A and D that gives the total heat needed to melt the block of ice if its temperature is the normal melting point.
The molar heat capacity of a compound with the formula C2H6SO is 88.0 J/mol-K. what is the specific heat of this substance.
Question- Sodium azide decomposes very rapidly to produce nitrogen gas in car airbags. The reaction is 2NaN3(s)-----> 2Na(s)+3N2(g). What mass of sodium azide will inflate a 60.0L airbag to a pressure of 1.5atm at 32degreesC
How much heat energy, in kilojoules, is required to convert 61.0 g of ice at -18.0 C to water at 25.0 C ?
A flask of water is connected to a powerful vacuum pump. when the pump is turn on, the water begin to boil. after a few minutes, the same water begins to freeze. eventually, it dissapears. explain what happens at each step
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