Answer:
they can carry cold arctic air, producing snow and freezing weather.
Explanation:
-w- hope it helps
I want to say physical change? i’m not quite sure, i hope this helps tho!
C i think but you should pick it anyway
A chemical reaction that has a positive g is best described as endergonic.
Answer: 2800 g
Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number
of particles.
Given mass = 5 kg = 5000 g
1 mole of
produces = 1 mole of 
50 moles of
produces =
of 
Mass of 
2800 g of
is produced from 5.0 kg of limestone.