Answer:
just use the tongs and put it on a plate
Explanation:
Answer: he expected to find no darkening of the film all because it hadn't been exposed to sunlight yet.
In every molecule of

there is 8 atoms of Carbon.
IF we have 3.7 moles of

to find the number of moles of Carbon, just multiply by 8
3.7 * 8 = 29.6 mol Carbon
Gas particles lose their energy during collisions
Formation of a precipitate