What was noticed about the shape of coastlines by sailors as early as the sixteenth century?

the west coastline of africa and east coastline of australia looked like they fit together
the east coastline of south america and west coastline of africa looked like they fit together
the west coastline of north america and east coastline of south america looked like they fit together
the east coastline of asia and west coastline of north american looked like they fit together

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer