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A certain aspirin tablet with a mass of 2.135 g contains 0.216g of aspirin. Explain what is the percent aspirin in the tablet?
Why is it an important concept that atoms generally appear in whole number molar ratios to each other in chemical compounds?
A saturated solution of MX3 (of MW 160g/mol) contains 0.0245 grams per liter. Explain what is the solubility product constant of MX3
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland
What is the complete ionic and net ionic equation for : Pb (NO3)2 + K2CrO4 = KNO3 + PbCrO4
Solution A and B have osmotic pressures of 2.4atm and 4.6atm respectively at certain temperature. Explain what is the osmotic pressure of a solution organized by mixing equal volumes of A and B at the same temperature
what will happen if a small amount of HCl is added to a 0.1M solution of HF? a. the percent ionization of HF will decrease. b. Ka for HF will increase
Butyric acid is responsible for the foul smell of rancid butter. The pKa of butyric acicd is 4.84.
Use the Reaction Editor to write a balanced net ionic reaction for the reduction of cupric ion (Cu2+) by hydroxylamine (NH2OH) in acid solution, using the smallest integer coefficients.
Rank the following aqueous solutions in order of increasing boiling point: 0.10 mNa2SO4, 0.10 m SrSO4, 0.25 m sucrose, 0.20 m glucose, 0.15 m NaCl
The activation energy of a certain reaction is 52.9 kJ/mol. How many times faster will the reaction occur at 35 degrees C than at 25 degrees C
Predict if the following conditions would result in the formation of a preecipitate: a. 0.0025 M Fe3+ at pH 6.00 b. 0.0025 M Ba2+ and a 1.25x10-4 M solution of sodium sulfate c
How do I determine if an ionic compound has the crystal structure of a simple cubic, a body-centered cubic or a face-centered cubic. E.g. NaCl has a structure based on a face-centered cubic lattice. Why is that
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