Well a compound is 2 or more different molecules together. So if you see a periodic table you will see the elements to see if they are the same or not.
It’s d like 100000000% trust me
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11. ionic charge +1, helium.
12. ionic charge 2-, neon.
13. ionic charge 3+, neon.
a) 56g
<h3>Calculation:</h3>
At STP,
22.4 L of N₂ = 1 mol
We have given 44.8 L of N₂, therefore,
44.8 L of N₂ = 
= 
mol
We know that,
1 mol of N₂ = 28 g
Hence,
2 mol of N₂ = 28 × 2
= 56g
Hence, there are 56 g of N₂ in 44.8 L of nitrogen gas.
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