When the cool and hot zones of a non luminous flame’s air
control valve is closed, the gas in which will be in placed as first and as it
encounters air as it was in the mouth of the burner, there will be a presence
of incomplete mixing, causing a combustion which would be incomplete and will
also lead to a process that can’t be controlled, resulting to flame that is
cool.
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
Answer:
1 year- 1 mole
time in general- amount of matter
1 second- 1 atom/ particle
both
Explanation:
an ecosystem is the environment they live in which includes other living things
