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Nitrogen Molecule (N2) has radius of about 0.2nm. Presume that nitrogen molecule is spherical in shape, Calculate?
a) Volume of a single molecule of N2,
b) Volume of empty space in 1 mole of N2 at STP
The freezing point of benzene is 5.5oC. What is the freezing point of a solution of 5.00 g naphthalene (C10H8) in 444 g of benzene (Kf = 4.90oC/m)
Calculate the total charge in coulombs supplied by the battery. How long in hours will it take to recharge the battery back to the original sulfuric acid concentration using a currtent of 22.4A
A 2 mL sample was taken of a solution of barium iodate at 10 degree C. the sample was mixed with 2 mL of 0.5 M KI and 2 mL of 1M HCl. The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of ..
compare alkalide ion with the neutral alkali atom.under appropriate conditions alkali metals a can be reduced to yield
A stock solution is prepared by adding 35 mL of 1.5 M NaNO2 to enough water to make 49 mL. How many moles of NO2- are in 30 mL of the stock solution
Calculate ?G (in kJ) at 65 oC for the reaction- N2O(0.0024 atm) + H2(0.24 atm) ? N2(846.0 atm) +H2O(l)
ill rate lifesaver to an answer to either of the followingalthough preferably both if its not too much trouble.
calculate the molality of each of the following solutions.a 15.9 g of sucrose c12h22o11 in 690. g of waterb 7.38 moles
If the pH at the beginning of a titration was 4.25 and 9.60 at the equivalence point. What is the pH at the half equivalence point.
Define what is the molarity of a KOH solution if 42058mL of KOH is needed to neutralize 25.00mL of 0.1350 M H3PO4. State the balanced equation for the reaction.
calculate the approximate amount of sodium thiosulfate pentahydrate needed to prepare 500mL
What is the [H30+] and the pH of a benzioc acid-benzoate buffer that consists of 0.17 M C6H5COOH and 0.26 M C6H5COONa? (Ka of benzoic acid = 6.3*10^-5)
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