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what is the pH of NaNO3 what is the pH of HNO3 what is the pH of NH3(aq) what is the pH of (NH4)2CO3 what is the pH of CO2 what is the pH of KC2H3O2 what is the pH of HC2H3O2 what is the pH of KCL
If all of the electron groups around a single central atom are bonding, and the same outer atom is bonded to the central atom in each case, is the molecule polar, nonpolar, or does it depend on the identity
Consider the following generic chemical equation. 2A+4B ---> 3C. What is the limiting reactant when each of the following amounts of A and B are allowed to react? 2 mol A; 5 mol B 1.8 mol A; 4 mol B 3 mol A; 4 mol B 22 mol A; 40 mol B
Explain what a hydrogen bond is and describe, on the molecular level, how a water and an alcohol molecule can hydrogen bond
What are the concentrations of HSO4-, SO42-, and H+ in a 0.255 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.)
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'
Calculate the pH of a buffer solution that is 0.423 M in H3BO3 and 0.199 M in NaH2BO3. The Ka of H3BO3 is 5.8e-10. a) The pH of this solution
The reaction below has a Kc value of 1.0 × 1012. What is the value of Kp for this reaction at 500 K. 2 SO2(g) + O2(g) 2 SO3(g)
Please explain which of the following aqueous solutions has the strongest ion-dipole attractions: 0.3 M Na3PO4 .1 M NiF2 .2 M Rb2CO3 0.01 M Sr(OH)2 and .03 M ScBr3.
A compound with a molecular formula C9H12, showed the following signals in its 1H NMR spectrum: ? (CDCl3, ppm): 7.5-7.0 (m, 5H), 2.3 (septet, 1H), 1.3 (d, 6H).
A particular dye solution has an absorbance of 0.984 in a 2.0-cm pathlength cuvette. When the same solution is placed in another cuvette, it has an absorbance of 0.652. What is the pathlength of the second cuvette
Derive an expression for (dH/dp)T soley in terms of T, p, V. Show that this quantity is identically zero for an ideal gas and find the equivalent expression for a van der Waals gas
The change cannot be determined without more specific information. It will remain constant. It will decrease by a factor of 2. It will decrease by a factor of 4.
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