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To verify the presence of sodium or potassium ions it is required to use the flame test. Explain why is not possible to precipitate these ions by reaction similar to those used to identify barium, silver, etc.?
What is the pH of a 0.15 M solution of aqueous Acetic Acid. The Ka of acetic acid is equal to 1.7 x 10^-5
When a metal was exposed to light at a frequency of 3.94× 1015 s-1, electrons were emitted with a kinetic energy of 5.80× 10-19 J. What is the maximum number of electrons that could be ejected from this metal
Which sequence of reactions would you use to synthesize 2-cyanohexane (racemic mixture) using 1-hexene as your starting material? options: a) Reaction with (1) H2SO4 (cat.)
What is the pH of a buffer that results when .50 mole of H3PO4 is mixed with .75 mole of NaOH and diluted with water to 1.00 L . The Ka1 is 7.5*10^-3, Ka2=6.2*10^-8 and Ka3*10^-13. Why is 6.2 *10^-8 used
can you explain hesss law? how does the quantum mechanical model of the atom explain the difference between the
a solution is prepared by adding 30.00 g of lactose milk sugar to 110.0 g of water at 55 degc. the partial pressure of
Give the structure of the major and minor organic products formed when HBr reacts with (E)-4,4-dimethyl-2-pentene in the presence of peroxides.
a the molar heat capacity of a diatomic molecule is 29.1jkmiddotmol. assuming the atmosphere contains only nitrogen
acetic acid is placed in a flask and is titrated with 25.00 mL 0.100 M sodium hydroxide
2NO2 + Cl2 = 2NOCl The inital pressure of NO2 was 1.577 atm and the inital pressure of Cl2 was 0.427 atm. At equilibrium, the partial pressure of NOCl is 0.624 atm. Calculate K.
Calculate the molarity of the hydroxide ion (OH-) for this final mixture (51.5mL) Please do not tell me to do Y while leaving out X and Z
The equilibrium constant, Kc for the reaction: Ni(s) + 4CO(g) Ni(CO)4(g) is 5.0 × 104 at 25°C. What is the equilibrium constant for the following reaction? Ni(CO)4(g) Ni(s) + 4CO(g)
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