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Give the systematic names for the formulas, or the formulas for the names. (Type your answer using the format copper(II) chloride for CuCl2, and using the format CO2 for CO2. Omit the centered dot for hydrates.) (a) NaNO2 (b) tin(IV) chloride (c) FeBr3 (d) Na2HPO4
Describe the basic steps involved in a gravimetric analysis. How does this procedure help us determine the identity of a compound or the purity of a compound if its formula is unknown?
A sample of 0.368 mol of a metal M reacts completely with excess fluorine to form 28.7 g of MF2. what element is represented by the symbol M?
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
Calculate the energy (J) of the photon emitted when an electron in the hydrogen atom falls from n=6 to n=1. Use 2.178 x 10-18 J for the constant in the Bohr equation.
A hypothetical molecule, X-Y, has a dipole moment of 1.90 D and a bond length of 169 pm. Calculate the percent ionic character of this molecule.
Write a balanced equation for an acid-base reaction that would produce each of the following salts; predict whether an aqueous
Describe the various strategies for the excretion of nitrogenous wastes employed in higher animals (chordates), both human and non-human.
draw the shape of the molecules and give the orbital geometry around the central atom; the molecular geometry; and give the hybridization state
SO2 present in air can be analyzed by titraion with permangante ions, as described in the equation:
Which of the following statements are correct based on the voltaic cell represented below Ni(s)INi2+(1.0M)II Fe3+(0.10M)IFe2+(1.0M) I Pt(s)
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..
What is the activation energy for a reaction if its rate constant is found to triple when the temperature is raised
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