distance between the two species decreases?

What force exists between H2O and  CH3CH2OH? Is it Ion-dipole?

Which of the following statements is FALSE regarding noncovalent interactions? a) Noncovalent interactions typically have energies below 100 kJ/mol b) Repulsive interactions dominate at very short length scales regardless of any attractive force c) Noncovalent interactions are responsible for the biological responsiveness of living to their environment d) Noncovalent interactions are typically stronger than covalent interactions e) Noncovalent interactions are electric in nature What is the physical basis of repulsion forces at very short distances? a) The gravitational attraction between two atoms reverse direction at very short distances b) It is highly energetic unfavorable for two atoms to clash and occupy the same space c) All electromagnetic interactions are repulsive at short distances d) Dispersion forces are extremely weak at very short distances e) There is no such thing as a repulsion force: a lie, it is. Which of the following statements is TRUE regarding solubility in…

Compound ∆Hf (kJ/mole) ∆S (J/mole K) C2H4 52.4 219.3 C2H6 –84.68 229.2 SiO2 –910.7 41.5   HF –273.3 173.8 SiF4 –1615.0 282.8 NH3 –45.9 192.9 O2 1.88 2.43 NO 91.3 210.8 H2O(g) –241.8 188.8 For the following reactions, using the provided ∆H and ∆S data, determine whether each one would be spontaneous or nonspontaneous at 25°C. C2H4(g) + H2(g) --------à                                  C2H6(g)                 SiO2 + 4 HF(g) ------------->             SiF4 (g) + 2 H2O(g)               4 NH3(g)  +  5 O (g)  ---------> 4 NO(g) + 6 H2O(g)

Consider how bond strength affects the speed of particles. Describe what happens to the kinetic energy of particles after a single bond is broken compared to a stronger double bond. You can answer this question with words, pictures, or graphs.

Explain why ionic solids are conductive when they’re dissolved in water, but molecularsolids are not (In full sentences and detail sufficient for a 1st year General Chemistry course). If you melted the two types of materials, would molten salt or moltenmolecular compounds be conductive?

Which would you expect to have the highest melting point? 1. RbCl 2. KCI 3. They have the same melting point Because 4. The internuclear distance is smaller; therefore, the force is stronger and requires more energy to overcome. 5. The charge is higher; therefore, interactions are stronger and require more energy to overcome. 6. They have the same charge and internuclear distance; therefore, interactions are of the same strength and require the same amount of energy to overcome. O 3 and 5 O 1 and 5 2 and 5 MacBook Air DII DD O00