1 mole = 70.9
X mole = 140
X=1.9746 moles
X= 1.98 when rounded to 3 significant figures.
Hydrogen, Nitrogen, Flourine, Oxygen, Iodine, Chlorine, Iodine, and Bromine.
It’s Ca3N2 I hope this is helpful
2- Condense
3- ?
5- Waves
6- Star
I hope this helps! :)
Answer im a little confused what exactly you need answered. please clarify
Explanation: