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Flourine in its ionic form carries an excess of 1 negative charge. If the element fluorine has an atomic number of 9 and a mass number of 19, how many total protons, neutrons, and electrons does the fluorine ions possess? How many electrons are present in the outermost shell? What type of atom or molecule will be fluorine ion attract? What type of bond would be formed as a result of this association?
Aminotransferases are enzymes that catalyze the interconversion of amino acids and ?-keto acids. In this way, they can provide the carbon needed for gluconeogenesis from amino acids supplied by dietary protein
A bottle containing 350 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
The good professor accidently grabs the Na2HPO4 bottle. What pH did professor Whoops expect the solution to be. what was the actual pH of the solution as made
The concentration of K+ in blood plasma is about 0.0050 M. The high internal concentration in cells is maintained by pumping K+ from the plasma. How much work must be done to transport 1.0 mol K+ from the blood to the inside of a muscle cell at 37..
Determine the energy change associated with these changes in state: a. 138g of steam condenses,b. 261mg of solid mercury melts,c. 8.36g of rubbing alcohol freezes d. 52g of liquid methane boils
The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 16 kt gold jewelry typically contains 66.666667% gold, 16.666667% silver and 16.666667% copper (by mass).
describe the importane of chemical elements to living
assume that you piper twenty milliliters of 0.350m cacl2 into a fifty milliliter volumetric flask and add di water to
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 424 K, Kc = 0.080 for the following equilibrium:
A (n) 8.54 - mol sample of carbon monoxide was stored in a 30.0-l container at 49.9 c . What is the pressure of the carbon monixide in the container.
what are the electronic configurations of Pb and Pb2+, also Mo and Mo2+. please explain what are their valence electrons.
What is the velocity of an electron having a de Broglie wavelength that is approximately the length of a chemical bond? Assume this length to be 1.2 X 10 ^ -10 m.
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