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what are the H3O+ and OH- concentrarions in a 125 mL solution prepared with 0.100 mol pf NaOH and water?
a compound has the empirical formula ch2o. when 0.0866g is dissolved in 1.000g of ether the solutions boiling point is
You need to produce a buffer with pH = 4.1 by dissolving a weighed amount of sodium formate (FW = 68.0072) in 500-mL of 0.45-M formic acid
The following reaction is investigated (assume an ideal gas mixture): 2N2O(g) + N2H4(g)-> 3N2(g) + 2H2O(g) Initially there are 0.10 mol N2O and 0.25 mol N2H4, in a 10.0 L container. If there are 0.06 mol of N2O at equilibrium, how many moles of N..
Draw the two possible products of the reaction between benzaldehyde and methylethylketone.
Oxygen gas is collected by water displacement from the reaction of sodium peroxide and water. The oxygen gas displaces 318 ml of water at 23 degrees C and 1 atm. What is the pressure of the dry oxygen gas?
A 200 MHz proton NMR instrument is used to obtain a ^13C spectrum. calculate the energy difference that will develop between teh two spin states of the ^13C nuclei.
What is the absolute humidity of the cooled air? and What is the minimum mass flow rate of water into the swamp cooler?
Use the appropriate standard reduction potentials to calculate the value of k at 25 degrees celcius for this reaction NiO(s)+2Cl-(aq)+4H+(aq)->Cl2(g)+Ni^+2(aq)+2H2O(l)
Draw the structures of the products of the neutralization reaction between pyridine and propanoic acid.
What is the silver ion concentration in a solution prepared by mixing 461 mL of 0.366 M silver nitrate with 425 mL of 0.545 M sodium chromate
Write the isotope needed, by identifying A, Z, and X, to balance the following nuclear fission reaction: 235/92 U+1/0 n--->140/56 Ba+A/Zx+31/0 n
Potassium hydrohen phthalate, KHC8H4O4, functions as monoprotic acid. If a 1.46 g sample of impure KHC8H4O4 requires 34.3 ml of 0.145 M NaOH
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