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The ionization constant of water at 1 Celcius is 1.259 x 10^-15. What is the Ph of pure water at this temperature? H2O<-->H+(positive ion)(aq) + OH-(aq)
a.) 14.90
b.) 6.50
c.) 7.00
d.) 7.45
e.) 15.0
Determine the number of moles of oxygen that would be needed to completely combust 0.0350 moles of benzene
In your house (elevation 950ft above sea level) you have a barometer that registers inches of mercury. On an average day in january, the pressure was 0.966 bar on 700 ft elevation
What is the wavelength (in nanometers) associated with a photon which has an energy content of 4.86E-24 kJ
a united nations toxicologist studying the properties of mustard gas sch2ch2cl2 a blistering agent used in warfare
A 2.50 mL buffer solution is .250 mol in acetic acid and .250 mol in sodium acetate. (Ka=1.8x10 to the -5). What is the initial pH to the buffer solution
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The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
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The water temperature before the reaction was 34.5°C, and after the reaction it had risen to 52.0°C. How many moles of water were formed?
The radius of a uranium atom is 149 pm. How many uranium atoms would have to be laid side by side to span a distance of 4.55 mm?
iron has a density of 7.874. gcm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000
An aqueous solution of etanol, C2H5OH is 19% ethanol by mass and has density of 0.9700gml. Calculate the molality, molarity of the ethanol solution.
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