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A local AM radio station broadcasts at an energy of 5.84×10-31 kJ/photon.
Calculate the frequency at which it is broadcasting.
Frequency = KHz
butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -.4 degrees Celsius. A 250 mL sealed flask contains .75 g of butane at -22 degrees C.
Calculate the empirical formula and then determine the molecular formula of this compound using the given molar mass. b) Draw three lewis structures for molecule that satisfies the octet rule for each atom.
Iron forms a magnetic oxide with the formula Fe3O4 that contains both Fe2+ and Fe3+ ions. What is the average oxidation number of iron in this oxide
What is the gas pressure (in atm) inside a 1.69-L bulb that contains 0.9-g of Ne at a temperature of 34.1 C? Be sure to report the units as atm.
Problem- SrS has a face-centered cubic unit cell in which the S^2- anions occupy corners and face centers, while the cations fit into the hole between adjacent anions. What is the radius of Sr^2+ if the ionic radius of S^2- is 184.0 pm and density..
Label the regions, and describe what will be observed when liquids of compositions aand bare cooled to 200 K.
A crude product weighing 2.0g contains 0.4g of impurities and is therefore 80% pure. The crude product is recrystallized from 100ml of hot water
The potential intersections of various catabolic and anabolic pathways through common metabolic intermediates and products.
Hydrogen can be extracted from natural gas according to the following reaction: CH4(g)+CO2(g) 2CO(g)+2H2(g) Kp=450 at 825K An 85 L reaction container initially contains kg of CH4 and 55.4 kg of CO2 at 825 K Assuming ideal gas behavior,
Explain Difference between "strong" and "weak" For Acids and Bases. What is it? (Explain it to a middle school student who has never taken chemistry).
Given the following dissolving process: Fe2(SO4)3 (s) = 2Fe3+ (aq) + 3SO42- (aq) How many grams of iron (III) ions are produced when 0.450 moles of sulfate ion are produced
What is the pH at the equivalence point of the titration and at the half equivalence point
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