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question from the chem lab : spectrophotometric determination of an equilibrium constant. indicator is Bromcresol Purple. 1) would your absorbance value to be too high or too low if the level of indicator were above the mark on the pipet when delivered to the flask?explain your answer
Draw the Lewis structures for calcium carbonate and magnesium hydroxide.
Calculate the reversible work required to transport 1mol of K+ from a region where CK+=5.25 mM to a region where CK+=35.5 mM if the potential change accompanying this movement is ?f = 0.055 V. Assume T = 298 K.
Cacodyl, a compound containing arsenic, has an almost intolerable garlic-like odor. Its molar mass is 210g/mol and it is 22.88% C, 5.76% H and 71.36% As. Determine its emperical and molecular formulas.
A 3.664 g sample of a monoprotic acid was dissolved in water and required 20.27 mL of a 0.1578 M KOH solution for neutralization. what is the molar mass of the acid
Problem- A current of 3.0 amps passing for 2.00 hours through a molten tin salt deposits 13.3 grams of tin. A) What is the oxidation state of the tin
In which solution (acidic, basic, neutral water, or doesn't matter) is potassium bromide most soluble
Use the rydberg equation to calculate the wavelength in angstroms of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 3
Calculate the energy of a photon emitted an electron in a hydrogen atom undergoes a transition from n=3 to n=1
The first-order decomposition of N2O5 proceeds as follows: 2 N2O5 (g) → 4 NO2 (g) + O2
Assuming the final mixture has a specific heat capacity of 4.18 J/g*degrees celsius, calculate the final temperature. The enthalpy of fusion for ice is 6.02 KJ/mol.
A 0.300-M solution of X (Mm = 171 g/mol) has a density of 1.096 g/ml. What is the molality of X in the solution?
what is the final concentration of NaOH when 50.0 mL of .200 M NaOH is added to 50.0 mL of 0.500 M NaOH?
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