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Potassium-40 has a natural abundance of 0.0118%. Explain how many atoms of potassium-40 are present in a 1.35 g sample of KCl?
Draw the skeletal structure of the enantiomer(s) of (2R,4R)-(-)-rose oxide. Draw the skeletal structure of the diastereomer(s) of (2R,4R)-(-)-rose oxide.
What are the concentrations of a weak formic acid (HCOOH) anf formate ions (HCOO-) in a 0.350 M formate buffer, pH 4.25? (pKa = 3.75): The formic buffer is composed of weak formic acid and its formate salt
Given the following balanced equation, determine the rate of reaction with respect to the [NOCl]. If the rate of Cl2 loss is 4.84 * 10-2 M/s, what is the rate of formation of NOCl
nitrogen gas was collected over water at a temperature of 40 degrees C, and the pressure of the sample was measured at .796 mmHg. if the vapor pressure of water at 40 degrees C is 55 mmHg, what is the partial pressure of the nitrogen gas?
With a slope of 5.5x106 m3/K, 1 mole, and 273.15K explain what is the coldest temperature that liquid water exists using the Clapeyron equations
What effect does adding an enzyme to a reaction have on this? On delta G? What are the roles of delta G in biochemical reactions (list two)?
Which one of these is liquid bromine, fluorine gas, or oxygen gas?
a molecule has an excited state electronic energy level that emits radiation of 1lambda 360 cm-1 when it falls to the
A solution is prepared by condensing 4.00L of a gas, measured at 27°C and 746mmHg pressure into 58.0g of benzene. Calculate the freezing point of this solution.
If 870 gm of NaCl, 416 gm of KMnO4 and 1000 gm of H2SO4 are mixed. which reagent is the limiting reagent
If a bottle of nail polish remover contains 172 of acetone,how much heat would be released by its complete combustion? The density of acetone is 0.788 .
Dinitrogen monoxide decomposes into N2 and O2. Suppose you have a reaction flask that initially contains only N2O at a pressure of 2.10 atm.
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