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Consider the following molecule:H20
a) What states of this molecule may be reached by electricdipole transitions from the totally symmetrical ground state?
b) What states of this molecular may be reached by electricdipole transition from an excited state of B2 symmetry?
you perform combustion analysis on 255 mg of a molecule that contains only c h and o and you find that 561 mg co2 is
At 25C what is the hydronium ion concentration of (a) 0.1 M chloroacetic acid Ka=1.36 X10-3 (b) 0.1 M sodium chloroacetate
Calculate the molar mass of (a) a gas that has a density of 1.98g/L at STP and, (b) an unknown liquid for which 3.33 liters at STP is found to weigh 10.88g
Finding Number of Atoms in a Molecule from Molecular Weight, As determined from the gas law, the molecular weight of a substance is eight times the atomic weight
unknown concentration of the weak base ammonia are standardized. 50.0 mL of the basic solution are titrated with 0.200 M HCl. The end point occurs after 38.8 mL of acid are added. What is the concentration of ammonia in the 2 L flask?
What pH condition (either more soluble in acidic solution OR pH = 1 or more soluble in basic solution of pH= 13) would improve the following compounds solubility in water:
Using values from Appendix C of your textbook, calculate the value of Keq at 298 K for each of the following reactions: (a) CH4(g) + 4 Cl2(g) CCl4(l) + 4 HCl(g) Keq = . (b) H2(g) + Br2(g) 2 HBr(g) Keq = . (c) Fe3O4(s) + 4 CO(g) 3 Fe(s) + 4 CO2(g) ..
a perfect gas undergoes isothermal compression which reduces its volume by 2.20 l. the final pressure and volume of the
The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of acetylene must be burned
5.00 ml of a water sample was titrated for hardness with 4.15ml of 0.0200m edta. write an equation for the reaction and
A sample of gas occupies 10.5 L at 600 torr and 50C. What volume will it occupy at STP?
If a pure R isomer has a specific rotation of -134.0°, and a sample contains 60.0% of the R isomer and 40.0% of its enantiomer, what is the observed specific rotation of the mixture
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