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Oxygen compounds of nitrogen contribute to air pollution, sometimes in a very visible way, Shown below is a chemical reaction that converts nitrogen tetroxide, N2O4, into nitrogen dioxide, NO2, a reaction that can occur in the atmosphere. N2O4 is colorless, but NO2 has a brown color, and its presence in the atmosphere contributes to the “pollution haze” observed in some cities. Is this reaction spontaneous at 25°C? K = °C + 273 ΔG = ΔH – TΔS

Acetylene combustion with oxygen is very exothermic, it generates a flame hot enough to cut metal (an oxygen-acetylene torch). The balanced equation for acetylene combustion is shown below:

What is the pattern of whole steps and half steps for a MINOR SCALE?  (use “W” for whole step and “H” for half step) [interval1], [interval2], [interval3], [interval4], [interval5], [interval6], [interval7]

How many grams of CaCl2 are formed when 25.00 mL of 0.00237 M Ca(OH)2 reacts with excess Cl2 gas?

Match the Calcium Channel Blockers to their correct mechanism of action 

The Voyager spacecraft has now left the solar system and is in interstellar space. Voyager carries with it a gold (Au) plated record containing some of the “sounds of Earth”. An image on the internet claims to show this actual record being gold plated, see below. I am not 100% sure this plating was performed by electroplating, but it looks like it could well have been. If so, would the record have acted as an anode or as a cathode in the plating process? The relevant chemical half reaction and the image are shown below.  Au+(aq) + 1 e- → Au(s) Gold plating the record that flies on the Voyager probe

Midterm and Final Exams — Students have the option of either testing in person OR testing online via zooms (proctored live).

Determine the theoretical yield of ethanol when 100.0g g of glucose is used according to the following fermentation reaction.                       C6H12O6(aq) → 2 C2H5OH(l) + 2 CO2(g)

Which of the following are decomposition reactions? 1) CH4 (g) + O2 (g) → CO2 (g) + H2O (l) 2) CaO (s) + CO2 (g) → CaCO3 (s)3) Mg (s) + O2(g) → MgO (s) 4) PbCO3 (s) → PbO (s) + CO2 (g)

Find LCM (72, 180) Type the number only below and show all of your work on your paper.