Imagine an alternate universe where the value of the planck constant is 6.62607x10^-9·js . in that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? a bacterium with a mass of 7.0 pg, 1.0 µm long, moving at 2.00 µm/s. classical quantum an iceberg with a mass of 2.2 x 108 kg, 60. m wide, moving at 0.96 km/h. classical quantum a paper airplane with a mass of 4.1 g, 165. mm long, moving at 2.9 m/s. classical quantum an alpha particle with a mass of 6.6 x 10-27 kg, 8.0 x 10-15 m wide, moving at 15. km/s. classical quantum clears your work. undoes your last action. provides information about entering answers.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

How many atoms are there in 5.70 mol of mg

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely. analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?