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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?
The decomposition of N2O5 is a first-order reaction: N2O5 ? 2NO2 + ½ O2. At 25 °C, it takes 5.2 h for the concentration to drop from 0.120 M to 0.060 M. Calculate the rate constant for the decomposition of N2O5.
Lead metal can be extracted from a mineral called galena, which contains 86.6% lead mass. A particular ore contains 68.5% galena by mass. If the lead can be extracted with 92.5% efficiency what mass of ore is required to make a lead sphere with a ..
a solution of sodium cyanide (NaCN) has a pH of 12.10. How many grams of NaCN are in 425 mL of solution with the same pH
Calculate the total energy (in kJ) absorbed by a person exposed to this radiation for 2.0 hours, given that there are 2.0 x 10^16 photons hitting earth's surface per square centimeter per second and the exposed body area
When butane (C4H10) reacts with oxygen, ... carbon dioxide and water are produced. The balanced equation for this reaction is
You have 200ml of a solution which is 0.2M NH3 and contains 0.23grams of NH4Cl. a. What type solution is it. b. What is the pH of the solution
Ethanol CH3CH2OH(l) can be formed from a reaction between ethylene gas C2H4(g) and water vapor. It is unclear if the C-C in ethylene gas is a single, double, or triple bond.
consider the reaction CO2+H2=CO+H2O.The equilibrium concentrations are [CO]= 0.050M, [H2]=0.045M, [CO2]=0.086M, and [H2O]= 0.040M. Calculate K .
Suppose that a compound "x" can be made from the reaction of two other compounds, "a" and "z". A. write a balanced equilibrium expression for this reaction
the average number of collisions per cubic meter per second for the molecules of argon at 0 degree Celsius and 1 bar of pressure. (d) what values would be obtained at 1000 degree celsius and 1 bar? (e) At 0 degree celsius and 100 bar
a 1.0500g sample of a solid weak organic base it is known that the base contains one amine group and therefore reacts
Tungsten has a boy-centered cubic unit cell and an atomic radius of 141 pm. What is the density of solid tungsten.
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