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Question - The air that we breathe is the most common gas in the world. It is something that is being harmed to an extreme extent. What is the air quality in your local area? Be sure to include your thoughts on why you consider your air quality to be above or below the worldwide average air quality. In what ways do you think your local air quality could be maintained (if good) or improved (if poor)?
Some websites that can help you answer these questions include: World's Air Pollution: Real-Time Air Quality Index.
U.S. Environmental Protection Agency: Outdoor Air Quality Data: Interactive Map of Air Quality Monitors.
What is the total number of joules of heat absorbed by 65 grams of water when the temperature of the water is raised from 25 degrees Celsius to 40 degrees.
Question- The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell is the site of the reduction reaction.
write the net ionic equation, a solution of potassium dichromate is added to an acidified solution of iron II chloride
For a particular redox reaction ClO2- is oxidized to ClO4- and Fe 3+ is reduced to Fe 2+ . Complete and balance the equation for this reaction in basic solution. Phases are optional.
Identify which process break covalent bonds and which ones simply overcome intermolecular forces? Explain why. A. Subliming iodine B. Oxidation of Mg to MgO C. Dissolving sugar in water D. Freezing pentane E. Converting CO to CO2
ferrophosphorus fe2p reacts with pyrite fes2 producing ironii sulfide and a compound that is 27.67 p and 72.13 s by
Calculate the percent ionization of arsenous acid (H3AsO3) in solutions of each of the following concentrations (Ka = 5.1e-10.) (a) 0.217 M % (b) 0.598 M % (c) 0.726 M %
If what make an acid strong is the extent of dissociation, at what sorts of concentrations (high or low) do weak acids behave more like strong acids
What mass of NaCl must be dissolved in 75.0 grams of water to lower the freezing point to -4.00c? The freezing point depression constant, Kfp for water is -1.83 C/m.
Question- The probability that an isolated HCN molecule is in the J=9 rotational level at 250 K is 0.075. You have 0.25 atm of HCN gas in a 1 L balloon at 250 K how many HCN molecules are in the J = 9 rotational level. Assume HCN is an ideal gas.
a pure diamond with a mass of 0.1000 g contains 5.014 1021 carbon atoms and has a density of 3.52 gcm3.what is the
a) Write the balance equation for the reaction. b) How many moles of O2 are needed to completly react with 4.0 mol of C2H6O? c) If a car produces 88 g of CO2, how many grams of O2 are used up in the reation
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