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0.500 mol/L of MgSO4. What is the concentration of this solution when expressed in percent (mass/volume)? a)0.602% b)0.415% c)602% d)0.000415% e)none of the above
Changing the conditions of the reaction can alter the value of the change in free energy (?G). Sort the following conditions as to whether each would decrease the value of ?
Both of the sulfur-oxygen double bonds in SO_2 are polar. In which direction should the polarity arrows point? Both of the sulfur-oxygen double bonds in are polar.
in the olympics and other major athletic competitions a gc-ms is used to screen athletes for their use of banned
The temperature at which a substance melts or boils depends upon the strengths of the intermolecular forces. What must happen for a substance to melt in terms of particles, intermolecular forces, and energy
If 1.0 μg/ml of pigment X shows an absorbance of 0.059 at 370 nm, then what is the concentration of a solution of pigment X that shows an absorbance of 0.443 at 370 nm? (Assume linearity.)
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.654 kJ of heat. It shrinks on cooling, and the atmosphere does 385 J of work on the balloon.
Indicate whether each of the following equilibrium mixtures contains mostly products or mostly reactants. a. CO(g) +Cl2(g) COCl2(g) Kc=5.0x10 to the negative 9 b.2HF(g) H2(g) + F2(g) Kc= 1.0x 10 to the negative 95 c. 2NO(g) +O2(g) 2NO2(g) Kc=6.0x1..
C2H4+3O2= 2CO+2H2O if 2.70 mol C2H4 is reacted with 6.30 mol O2 a. identify the limiting reagent
A mass of G grams of a liquid are placed in a closed 15 liter, fixed-wall container. The molecular weight of the liquid is 18 g mol-1. Its molar heat of vaporization is 44 kJ mol-1. Its normal boiling point is 373 K. A scientist measures the press..
The effective nuclear charge is approximated as the total nuclear charge minus the number of core electrons. Thus, effectively, core electrons decrease the nuclear charge felt by the valence electrons because they are between the nucleus and the v..
Starting with butane, 2-bromobutane or 1-bromobutane, please show the reaction/mechanism for how could prepare
A table wine has a pH of 3.40. What is the hydronium ion concentration of the wine. Is it acidic or basic.
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