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An unknown compound has the formula XF5. This compound is 42.81% fluorine by mass. Identify the element X, draw a 3-dimensional picture of XF5, and write the complete electron configuration of this molecule.
As part of a soil analysis on a plot of land, you want to determine the ammonium content using gravimetric analysis with sodium tetraphenylborate, Na B(C6H5)4-. Unfortunately, the amount of potassium, which also precipitates with sodium tetrapheny..
Three solutions are mixed together to form a single solution. One contains 0.2 rm mol rm Pb(CH_3COO)_2, the second contains 0.1 rm mol rm Na_2S, and the third contains 0.1 rm mol rm CaCl_2.
the equivalence point occurs when 12.75 mL of 0.075M NaOH is added to a solution containing 10mL weak unknown acid and 40mL Deionized water
What mass of H2C2O2 is required to prepare 250 mL of a 0.15 M H2C2O4 solution
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
Which of the following statements about free radicals is true? Free radicals are considered good because they are good oxidizing agents.
Calculate the vapor pressure of water above a solution prepared by adding 23.5 g of lactose (C12H22O11)to 200.0g of water at 338K . (Vapor-pressure of water at 338K 187.5 torr.)
Calculate the number of pounds of CO2 released into the atmosphere when a 18.0-gallon tank of gasoline is burned in an automobile engine.
how many grams of ch3oh must be added to water to prepare 150ml of a solution that is 2.0 m
The ratio of the number of atoms of the isotopes Ga-69 and Ga-71 in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium.
How many grams of the products are produced by the oxidation of C7H14O3 by potassium permanganate in acidic solution (HCl is the acid) when you start with 25.65494 g of C7H14O2 and stoichiometric amounts of potassium permanganate
Draw a structure for a compound that meets the following description: C7H8 with IR absorptions at 1600 and 1500 cm-1 and at 3030 cm-1.
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