Answer:

Step-by-step explanation:

Answer:
In early production, first calcium cyanamide was converted into dicyandiamide, which was heated above its melting temperature to produce melamine. Today most industrial manufacturers use urea in the following reaction to produce melamine: 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO.
Answer:
Inner hole: 13 cm; Whole disc, 72 cm
Step-by-step explanation:
Connexus 2021
Answer:
30 degrees
Step-by-step explanation:
90 + 60 + x = 180
150 + x = 180
-150 -150
x = 30