Animals are unicellular organisms with cell walls.
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List & describe two “precedents” established by George Washi…
List & describe two “precedents” established by George Washington as President.
This added roughly a half million square miles to the United…
This added roughly a half million square miles to the United States in 1848
Which is the correct order of events first to last
Which is the correct order of events first to last
In Equal Temperament, how many cents are in a M3?
In Equal Temperament, how many cents are in a M3?
A note with a frequency of 724 Hz has a [higher pitch/lower…
A note with a frequency of 724 Hz has a [higher pitch/lower pitch] than a note with a frequency of 440 Hz?
The Battle of First Bull Run was won by
The Battle of First Bull Run was won by
“Midnight Appointments” to government jobs & positions are c…
“Midnight Appointments” to government jobs & positions are closely associated with the many such appointments by this president on his way out of office after losing re-election
In a catalytic converter, nitrogen dioxide, NO2, undergoes m…
In a catalytic converter, nitrogen dioxide, NO2, undergoes metal catalyzed reduction to form nitrogen, N2, and oxygen, O2. A balanced equation is provided below. The equation is written with an unconventional coefficient of 1/2 for nitrogen so that the equation is for 1 mole of nitrogen dioxide, so that energies can easily be calculated per mole. NO2(g) → 1/2 N2(g) + O2(g) ΔHr = -33 kJ/mol ΔSr = +61 J/(mol.K) Given the provided enthalpy and entropy of reaction values, determine the Gibbs energy of this reaction at 500°C, the temperature inside a catalytic converter, and decide if the reaction is spontaneous or not at this temperature. Use the equation ΔG = ΔH – TΔS and remember to use the correct units throughout. K = °C + 273
During his second term, President Jackson:
During his second term, President Jackson: