Chemistry
what is the molecular formula for cyclopentane
C5H10
where do i live
avalon or something
4. Hard
Explain why ammonia (NH₃) is soluble in water while methane (CH₄) is not. Your answer should refer to molecular polarity and intermolecular forces.
Ammonia (NH₃) is soluble in water, while methane (CH₄) is not, because of differences in molecular polarity and intermolecular forces:
Ammonia (NH₃):
Polar molecule due to its trigonal pyramidal shape and electronegativity difference between nitrogen and hydrogen.
Lone pair on nitrogen allows hydrogen bonding with water molecules.
Strong intermolecular forces between NH₃ and H₂O make dissolution favorable.
Methane (CH₄):
Nonpolar molecule with a symmetrical tetrahedral shape.
Only weak London dispersion forces exist between CH₄ and H₂O.
Cannot form hydrogen bonds with water, so it is effectively insoluble.
Conclusion: Ammonia dissolves in water because polarity and hydrogen bonding make the process energetically favorable, while methane does not dissolve because it lacks polarity and cannot interact strongly with water molecules.
what is a dendrimer
A dendrimer is a synthetic, highly branched, tree-like macromolecule.
what is my middle name
idkk probably gerald
In a sealed container, N₂O₄(g) ⇌ 2 NO₂(g) is at equilibrium. A piece of copper metal is added, which slowly and irreversibly consumes NO₂ at the surface.
What happens to the gas equilibrium?
The equilibrium shifts right, causing more N₂O₄ to decompose into NO₂, which is continually consumed by the copper.
A researcher investigates the thermodynamics of encapsulating a hydrophobic drug molecule inside a PAMAM dendrimer in aqueous solution. The following data are obtained at 298 K:
ΔH° (enthalpy change of encapsulation) = –15.0 kJ·mol⁻¹
ΔS° (entropy change of encapsulation) = +25.0 J·mol⁻¹·K⁻¹
The dendrimer has 64 terminal amine groups at generation 5 (G5).
What is Gibbs free energy, and thus prove whether or not this reaction is spontaneous
−22.45k, spontaneous
what is my chemistry rank
not very good, probably last
What is the chemical symbol for sodium?
N/a
what is the boiling point of water?
373.15 K
what boat am i going to be in this year
the 3rd 4, i suck
Balance the equation:
H2+O2→H2O\text{H}_2 + \text{O}_2 \rightarrow \text{H}_2\text{O}H2+O2→H2O
go figure
what is a polar bond
large difference in electronegativity
whos ollies favourite
bowman obviously
A sample of gas has a volume of 2.50 L at 1.00 atm and 298 K. What will its volume be at 0.500 atm and the same temperature?
5.00 L.