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What is the molarity of a solution made from 23.1g of NaNO2 dissolved in enough water to make 500ml solution
A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form? What is the identity of the precipitate?
If the initial volume of the container, before any reaction takes place, is 5.70 L, determine the volume of the container after the N2 (g) and H2 (g) have reacted to completion.
slurry is filtered over a filter paper in a Buchner funnel and weighed after drying. The following is found:Weight of bone dry filter paper = 0.25 grams. Bone dry filter paper and pulp = 6.55 grams. What is the consistency of this pulp slurry?
What is the numerical value (ignore units) of the equilibrium constant for the following reaction
Estimate the temperature above which this reaction is spontaneous. DS0 = 16.1 J/K. CH4(g) + N2(g) + 163.8 kJ ® HCN(g) + NH3(g)
calculate how many protons are required to pass through the xeno-FoF1-ATP synthase complex to synthesize one ATP.
For the reaction for the formation of NaClO (below) , if you have 1.23 mol NaOH and 1.47mol Cl2, which is the limiting reactant? How many moles of NaClO could be obtained?
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound
A stock solution is prepared by adding 20 mL of 1.21 M AlCl3 to enough water to make 72 mL. What is the Al3+ concentration of 30 mL of the stock solution
What volume of an organic solvent must be used to effect 90% seperation in one extraction when only 2.7 g of a certain compound dissolves 100 ml of water? (K=15).
Calculate the expectation value for the kinetic energy of the H atom with the electron in 2s orbital. Compare your result with total energy
A mixture of gases contains 0.290 mol CH4, 0.250 mol C2H6, and 0.270 mol C3H8. The total pressure is 1.60 atm. Calculate the partial pressure of the gases.
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