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The rate constants of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 315 K and 325 K. What must the activation energy be for the rate constant
write the most stable lewis structure for C2F4 and state the hybridization of the carbon atom
Create a flow chart of the process to create a lewis structure. when is an expanded octet acceptable and why
What information do molecular formulas, condensed structural formulas, Lewis structures and bond line formulas provide
For a second-order reaction, what quantity, when graphed versus time, will yield a straight line. The natural log of the concentration.
The H2O molecule has a bond angle of 105. What type of atomic orbitals does oxygen use to form the two equivalent sigma bonds with H
Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply. A) Speedup the reaction without changing k. B) Decrease the energy of activation. C)
How many structures can be drawn from C4H10O and how can you differentiate the molecules in a labratory
At a certain concentration of reactants the rate of appearance of water in the following reaction is 0.26 M/s.
At 25 degrees Celsius, .87 atm of No2(g) was allowed to decompose. At equilibrium it was found that the partial pressure of no2(g) was .81 atm. Calculate the value of kc at the temperature
Which functional groups are based on carbonyl moiety. Which functional groups act as a nucleophile and an electrophile
How would you prepare a 25.0% water in ethyl alcohol solution using 100.0 ml of ethyl alcohol (the density of alcohol is 0.7893 g/ml)
Molybdenum crystallizes in a body-centered cubic array of atoms. The edge of the unit cell is 0.314 nm long. Calculate the density of this metal.
Calculate the energy necessary to boil 100.0 g carbon disulfide, CS2, at its normal boiling point.
The rate of formation of ammonia in the reaction N2(g) + 3 H2(g) ? 2 NH3(g) was reported as 1.15 M/h (moles per liter per hour). What is the rate of disappearance of H2(g)
How do you calculate the pH when 0.2 moles of NaOH have been added to 1 mole of acetic acid during a titration. The pKa of acetic acid is 4.76.
The density of copper is 8.92 g/cm3 and the density o zinc is 7.14 g/cm3. Assume that the density of the brass varies linearly with composition.
Ocean currents are measured in Sverdrups (sv) where 1 sv=10^9 m^3/s. The Gulf Stream off the tip of Florida has a flow of about 35sv.
The lowering of vapor pressure is expressed as Raoult's law. An ideal solution obeys Raoult's law. Discuss the reasons why real solutions differ from Raoult's law.
Two of the Group 12 elements exhibit very similar chemistries to one another, while the chemistry of the third is somewhat different. Identify the Group 12 element whose chemistry is different from
Porphyrin complexes are among the most important chelating agents in nature. Which statement is correct concerning these
What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=8 to n=2? Express your answer in kilojoules per mole to three significant figures.
A gaseous reaction occurs at a constant pressure of 45.0 atm and releases 57.1 kJ of heat. Before the reaction, the volume of the system was 9.00 L . After the reaction, the volume of the system was
A 1.678 g sample of a component of the light petroleum distillate called naphtha is found to yield 5.143 g CO2 (g) and 2.456 g H2O (l) on complete combustion. This particular compound is also found
In the synthesis of aspirin, what would happen if a student tried to quench the reaction by adding excess aqueous sodium hydroxide instead of 8 mL of water