Question

When diamond is heated in vacuum for a very long, it changes into:
A) graphite.
B) charcoal.
C) lamp black.
D) carbon dioxide ​

Answer 1

When diamond is heated in vacuum for a very long, it changes into:

A) graphite.

B) charcoal.

C) lamp black.

D) carbon dioxide

Answer 2

Answer:

d. opsane is right carbon dioxide