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What is the maximum number of electrons that could have l=1 and ms=-1/2 in the ground state electron configuration of the neutral element sulfur, S?
Consider an aqueous solution that is 0.934 M in FeCl2 (MW = 126.752 g/mol) with a density of 1.31 g/mL. Calculate the molality, mass percent, and mole fraction (?) of FeCl2 in this solution. The MW of H2O is 18.02 g/mol.
a 62g piece of ice at 0 degree celsius is added to a sample of water at 9 degree celsius. all of the ice melts and the
Compute the molar concentration of Cl- in the standard KNO3 solution if the flask is rinsed only one time with distilled water.
Iron(III) is polarographically reduced to iron(II)at potentials more negative than about +0.4V versus SCE and is further reduced to iron(O) at -1.5V (vs SCE). Iron(II) is also reduced to metal at -1.5V.
how many grams of H2 are needed to react with an excess of N2 and produce 6,867 grams of NH3? the molar mass H2 is 2.016g and the molar mass NH3 is 17.04g
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids
Draw a hydrogen bond between two urea molecules. Be sure to clearly represent the important aspects of the structure of each molecule in your drawing and clearly identify the donor atom (D) and the acceptor atom (A) in your hydrogen bond
For the chemical equations shown below, label each reactant as either acid or base, and each product as either conjugate acid or conjugate base according to the Brønsted-Lowry definition.
explain the main concept behind the vsepr theory of molecular shape. how do both number and type of electron pairs
A sodium hydroxide solution of unkown concentration is standardized against potassium biphthate. It takes 37.35 mL of the NaOH solution to neutralize 0.777 grams of KHP. Explain what is the molarity of the sodium hydroxide. Molar mass of KHP= 204 ..
A compound containing only C, H, and O, was extracted from the bark of a sassafras tree. The combustion of 91.3 mg produced 248 mg of CO2 and 50.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formu..
One mole of ideal gas undergoes a three-step process. In step one: the gas expands isothermally and reversibly from state 1 to state 2. In step two: the gas is cooled isochorically yielding state 3.
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