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Explain what is the answer? Lithium is categorized as an element because it is composed of atoms that
1) have the same mass
2) have different masses
3) have the same atomic number
4) have different atomic numbers
Pure metals are commonly recovered from sulfide ores by successive processes of roasting in air (oxidation), dissolution in sulfuric acid and electrolysis (reduction). Consider the starting ore mineral sphalerite (ZnS). Write balanced chemical rea..
What volume of 3.50M H2S is required to react with excess O2 to produce enough NH3 to fill a cylinder that is 50ft long and has a diameter of 13 ft at a pressure of 450 torr and 20?F?
Radiation therapy. An effective treatment for some can cancerous tumors involve irradiation with fast neutrons. The neutrons from one treatment source have an average velocity of 3.2 X10-7 m/s.
How do you prepare 2-Bromo-2-phenylpropane from benzene. Using Alcl3 as one of the reagents and going through an intermediate.
a particular radioactive isotope has a half-life of 15.0 days. if you have 18.3 mg of the isotope at the beginning of
calculate the solubility of potassium bromide at 23 degrees celuius.assume that the solubility increases by an equal
Illustrate this by showing the reaction of trans-p-anisalacetophenone with bromine and 2,4-dinitrophenylhydrazine to give the corresponding products
Calculate the amount of heat evolved in the oxidation of 32.0 g of Fe (Ar = 55.85 g/mol) at 25 oC and 1 atm pressure ( ?Hfo(Fe2O 3,s) = -824kJ/mol)
At 2000 degrees celcius the equiblibrium constant for the reaction 2NO to N2 and O2 is Kc = 2.4 x 103. If the initial concentration of NO is 0.200M, what are the equilibrium concentrations of NO, N2, and O?x?
calculate the equilibrium concentration of Ag+(aq) in a solution that is initially 0.200 M AgNO3 and 0.810 M NH3,
When completely filled with water, the beaker and its contents weigh 297.65 g. Use d=100 g/mL as the density of water. What volume does the beaker hold?
What NaCl concentration results when 219 mL of a 0.740 M NaCl solution is mixed with 492 mL of a 0.350 M NaCl solution?
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