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Which two electron configurations represent elements that would have similar chemical properties? (1) 1s22s22p4 (2) 1s22s22p5 (3) [Ar]4s23d104p3 (4) [Ar]4s23d104p4
The element gallium has 2 isotopes with the masses and natural abundances shown in the table. Mass of Isotope Natural abundance 68.9257 60 70.9249 40 What is the average atomic mass of gallium
Lithium iodide has a lattice energy of -7.3 times 10^2 kJmol and a heat of hydration of -793 kj/mol. Find the heat of solution for lithium iodide.
What is the atomic mass of unknown element X if it has the following isotopic composition.
Find the gram formula mass of each compound.
a student is asked to calculate the amount of heat involved in changing 10 grams of liquid bromine at room temperature (22.5 C) to vapor at 59 C. To do this, one must use tables 8.1 and 8.2 for information on the specific heat, boiling points
When 0.097 moles of Magnesium hydroxide (Mg(OH)2) is dissolved in water, how many moles of ions are released into the solution ?
alpha-titanium alloy to process into a turbine blade. Based on the fact that the alloy has an HCP crystal structure, what general processing technique
determine the mass of each of the following salts required to form a saturated solution
If the temperature of a sample of gas with an initial volume of 1.75 is increased form 15.0 c to 30.0c, what will the final volume be.
What is the chemical formula for the base iron(III) hydroxide. The formula for the oxalate ion is C2O4^2-
When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. The net chemical equation is Cu(2+)(aq) + 2OH(-)(aq) --> Cu(OH)2(s)
the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 18.4 g of biphenyl in 28.0 g of benzene?
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