Give two reasons why the crude product in most reactions is not pure.

Drive down any three characteristic of modern periodic table

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?