Questions

what is the value of the equilibrium constant for the reaction between each pair at 25 degrees Celsius? a) Al (s) and Cd+2
@christinao25 • about 3 hours ago • Chemistry
Are q and ΔH interchangeable?
@maayang2 • about 4 hours ago • Chemistry → Enthalpy
How does the secondary amine react with D to get to E?
@nataliem116 • about 5 hours ago • Organic Chemistry
Determine the equilibrium constant for the condensation of one mole of water at 298 K. H2O(g) ⇌ H2O(l) ∆G° = -8.58 kJ
@mercedesf3 • about 8 hours ago • Chemistry → Gibbs Free Energy
Determine the molarity of a solution by dissolving 3.00 moles of NaCl in enough water to yield 4.00 L of solution.
@yazbetr1 • about 8 hours ago • Chemistry → Molarity
Air contains 78 % N2 , 21 % 02 , and 1 % Ar , by volume . What is the density of air at 1,000 . torr and -10°C?
@luzp5 • about 8 hours ago • Chemistry → Ideal Gas Law Density
The Balmer-Rydberg equation can be extended to ions with only one electron, such as He+. In that case it has the form: 1/λ = Z2R(1/m2 - 1/n2), where Z is the atomic number.
@tatianas22 • about 9 hours ago • Chemistry → Bohr and Balmer Equations
A buffer solution is prepared by combining 0.200 mol acetic acid and 0.600 mol sodium acetate in a 1.00 L container. What is the pH of the buffer solution after 1.00 L of 0.100 M HCl is added?
@mercedesf3 • about 9 hours ago • Chemistry → Buffer
It requires 75 kJ to heat a cup of water from room temp to boiling in the microwave oven. If the wavelength of microwave radiation is 2.9×10−3m, how many mol of photons are required to heat the water?
@tatianas22 • about 10 hours ago • Chemistry → The Particle Nature of Light
Review for final
@esthera17 • about 10 hours ago • Organic Chemistry
Review for final
@esthera17 • about 10 hours ago • Organic Chemistry
Please show mechanism with arrows.
@ashleyb244 • about 11 hours ago • Organic Chemistry
Oxalic acid (H2C2O4), a diprotic acid. In 100g of parsley, there are 0.02 moles of oxalic acid. Which of the following would completely neutralize this quantity?
@setarehf1 • about 11 hours ago • Chemistry
A 0.125 g sample of a monoprotic acid of unknown molar mass is dissolved in water and titrated with 0.1003 M NaOH. The equivalence point is reached after adding 20.77 mL of base.
@kailanir1 • about 12 hours ago • Chemistry → Equivalence Point
I see there are no questions or notes on Electrochemistry (especially THE ARRHENIUS THEORY). May I please request notes, videos, problems or anything that may be helpful, please.
@rhulanin1 • about 12 hours ago • Chemistry
electrolytic conductivity of a saturated solution of MgCl2 is 4.35 x 10─5 , and that of pure water is 1.5 x 10-6 . The molar ionic conductivities of ½Mg2+ and Cl─ are 61.0 and 76.4 . Calc. Solubility
@rhulanin1 • about 12 hours ago • Chemistry
For which of the mixtures will Ag2SO4(s) precipitate?
@justicel3 • about 12 hours ago • Chemistry
Estimate the enthalpy change for the reaction CO(g) + 2 H2(g) --> H3C-O-H(g) (carbon monoxide reactant, methanol product) given the following bond energies:
@myiar4 • about 12 hours ago • Chemistry → Enthalpy of Formation
Which molecule has a Lewis structure that does not obey the octet rule? N2O, CS2 , PH3 , CCl4 , NO2
@myiar4 • about 12 hours ago • Chemistry → Octet Rule
Each of the equivalent resonance structures of the nitrate ion (NO3)- has how many lone pairs of electrons if each atom obeys the Octet Rule? 2, 3, 6, 8, 10
@myiar4 • about 13 hours ago • Chemistry → Resonance Structures