The first mechanistic step in the direct reaction of an amine with a carboxylic acid to produce an amide is . A) an acid-base reaction
B) nucleophilic attack on the carbonyl carbon
C) loss of H2O
D) loss of CO2
E) loss of N2

3 hours because it is a decent distance.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.