Answer me please
fast its urgent ​

#1

Here the basic reaction of C and O_2 occurs hence

#2

First we have to find moles if Oxygen

Hence

It will be same like 1st one i. e 2mols of CO_2 will be produced .

#3

Now we already found moles in 16g of dioxygen

Hence

it's c. elements are placed in rows based on how may valencies electrons have.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.