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A solution with a concentration of 0.17 M is measured to have an absorbance of 0.53. Another solution of the same chemical is measured under the same conditions and has an absorbance of 0.81. What is its concentration?
How many coulombs are required?
How much silver iodide, AgI, in grams will dissolve in 1200 ml of pure H2O at 25 degrees Celcius when the system reaches equilibrium
When an aqueous solution of sodium sulfite is added to an aqueous solution of hydrobromic acid, a gas evolves. Write the balanced chemical equation
ow many milliliters of 0.200 M NaOH will be required to titrate 8 mL of 0.479 M H2SO4
what do the bond angles of boron trifluoride suggest about the hybridization state of the boron atom of water
Calculate the amount of heat liberated (in kJ) from 383 g of mercury when it cools from 61.0°C to 11.0°C.
A mixed alkali sample requiring 15.0ml of 0.100 F HCl to reach the first end point and an additional 20.0ml to reach the second end point
If 545 mL of oxygen gas is collected at 21ºC and 754 mm Hg, what is its volume at STP?
"What was the % recovery (by mass) of product based on the mass of crude product?" The starting unkown material weighed .2415g, the melting point of just the sample was 51.4-95.2 degrees C,
Nitrogen dioxide dimerizes to produce dinitrogen tetroxide. Give a possible explanation for why this reaction occurs
A buffer solution is made by dissolving 2.5g benzoic acid and 2.7 sodium benzoate in 100mL water. 15 mL of 0.125M NaOH is added to the solution
Use bond enthalpies to estimate the enthalpy change for the following gas-phase reaction.
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