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calculate the molarity of acid (or base) remaining in solution when 20mL of 0.400M HNO3 is added to 16.3mL of 0.258M NaOH? Determine the molarity for all ions remaining in the solution
Calculate the wavelength of the photon emitted when an electron makes a transition
A solution is prepared by mixing 78.0 mL of 5.00 M HCl and 35.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
An industrial freezer is maintained at -26 oC with a vapor compression refrigeration unit using R-134a (HFC-134a) as the working fluid. A throttle is used in the refrigeration cycle and the compressor is 80% efficient.
A 28.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings
Draw stereo-formulas for the more stable chair conformation for both cis- and trans-4-tert-butylcyclohexanol and explain why each conformation is preferred.
Brass is a copper and zinc alloy containing 31.8% zinc by mass and having a density of 8.73 {\rm \frac{g}{cm^3}}. A fitting composed of common brass has a total volume of 335.6 {\rm cm^3}
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
What is the principal product when aniline is treated with sodium nitrite and hydrochloric acid at 0-5°C and this mixture is added to p-ethylphenol.
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
if you titrated it with .233 M sodium hydroxide solution, and it took 8.33 ml of the base to neutralize the acid, what was the concentration of the nitric acid? Write the Neutralization reaction, balance it, NAME the products THEN solve the proble..
A buffer solution contains 0.386 M NH4Cl and 0.316 M NH3 (ammonia). Determine the pH change when 0.064 mol HBr is added to 1.00 L of the buffer
What determines whether a group on a benzene ring will be activating or deactivating and ortho para
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