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A 3.9L sample of O2 gas has a pressure of 1.2atm . A 1.7L sample of N2 gas has a pressure of 1.3 atm.
If these two samples are mixed and then compressed in a 1.3 L vessel, what is the final pressure of the mixture? Assume that the temperature remains unchanged.
a mixture containing 235 mg of helium and 325 mg of neon has a total pressure of 453 torr. what is the partial pressure of helium in the mixture?
How many mls of 12M Acetic Acid must be added to 500 ml of 0.5M Sodium acetate to prepare a buffer of pH 4.76 (pKa of Acetic Acid is 4.76).
How many moles of N2O contain the same number of nitrogen atoms as 4.60g of NO2
Calculate the molar gibbs energy of fusion (melting) for water at -3degree and 1bar, given that Cp(s)=38J/kmol Cp(l)=75.3j/kmol
this experiment separates meat into an acetone-soluble part and an acetone-insoluble part. the calculations are based
Consult your lecture or lab text and give a complete structuer for the 'intermediate borate ester' formed in the reduction of 2-butanone with NaBH4. Why is it necessary to add water after the reaction is complete?
what concentration of aqueous NaCl solution freezes at -15.2 C? the freezing point of pure water is 0.0 C and Kf of pure water is -1.86 C/m.
A student measures incorrectly and mistakenly records a value for the ice's mass that is too high. How will this mistake affect the calculated value for Hf. Explain.
calculate total heat in (J) needed to convert 0.333 mol of gaseous ethanol at 300 degress celsius and 1 atm to liquid ethanol at 25 degress celsius and 1 atm
Determine the answer to each of the following: a) the number of unpaired electrons in the Mn2+ ion: show valence orbital diagram b) a possible set of quantum numbers (n, l, ml, ms) for an electron occupying a 5p orbital
In the neutralization reaction: HCl (aq) + NaOH (aq) = NaCl (aq) +H20, 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is ?
calculate how many joules are needed to heat 18.2g of tin from 24cdeg to 37.7cdeg?we needed a 50ml of a 0.1 m tris
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