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Why is the Quantum model is based off of the Bohr model but the Bohr model is far less complex?
Now consider the following set of reactions: Reaction A=2NO2 --- 2NO + O2, H=109 kJ/mol Reaction B=N2O4 --- 2NO + O2, H=172 kJ/mol The equations given in the problem introduction can be added together to give the following reaction
How many liters of softened water, containing a sodium concentration of 4.0×10-2% sodium by mass, have to be consumed to exceed the FDA recommendation
Imagine you are working on ways to improve the process by which iron ore containing Fe2O3 is converted into iron: Fe2O3(s) + 3 CO(g) 2 Fe(s) + 3 CO2(g)
an unknown metal m was converted to the sulfatem2so43. a solution of this metalsulfate was treated with excess barium
Working with partition function and entropy what is the ratio of the number of particles in the J= 14 to the J=4 level at a temperature of 1900 K?
Suppose Joule encountered the waterfall at Niagara Falls. Calculate the height if the temperature difference between the top and bottom of the waterfall is 0.20° F.
1.7g of 2,3-dimethyl-1,3-butadiene is refluxed with 1.7g of maleic anhydride in toluene, and 1g of product is recrystallized from hexanes. The product has the formula C10H12O3. Calculate the percent yield.
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates
An object made of aluminum has a mass of 8.37g. When it was placed in a graduated cylinder containing 20.0mL of water, the water level rose to 23.1mL. Calculate the density and specific gravity of the object.
we have 400g of water at temperature 64 degrees c How much heat energy must be supplied to raise the temperature of water to 90 degrees c.
By how many volts will the potential of an ideal Mg+2 ion selective electrode change if the electrode is removed from a 1 x 10-4 M MgCl2 solution and replaced with a 1 x 10-2 M MgCl2 solution
a helium-filled weather balloon has a volume of 815 l at 22 oc and 752 mmhg. it is released and rises to an altitude of
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