Calculate ethalpy of this reaction
When 25.0mL of .500M H2SO4 is added to 25.0mL of 1.00M KOH in a coffee cup calorimeter at 23.50 degree Celcius, the temperature rises to 30.17 degree celcius. Calculate ethalpy of this reaction.
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KCl has the same structure as NaCl (Face-centered). The length of the unit cell is 628 pm. The density of KCl is 1.984 g/cm^3, and its formula mass is 74.55 amu. Using this information, calculate Avogadro's number.
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What proportion of the molecules have enough speed to escape when the temperature is (a) 240 K, (b) 1500 K? Calculations of this kind are very important in considering the composition of planetary atmospheres.
A municipal bond carries a coupon rate of 7% and is trading at par. A corporate pays a rate of 10%at what marginal tax rate would an investor be in deferent between these two bonds?
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What is the approximate frequency of a photon having an energy 4.85 X 10-19 J? (h = 6.63 x 10-34 Jxs)
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