Using molecular orbitals, determine if the following cycloaddition of 1,3-butadiene and allyl cation is thermally allowed. heat? 6. (6 points) which of the following ketones would you predict to have more partial negative charge on its oxygen atom? why?

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer