-6+1= -5
-5 is the true answer
Organisms that share many derived characteristics are probably more closely related
The volume of H₂ evolved at NTP=0.336 L
<h3>Further explanation</h3>
Reaction
Decomposition of NH₃
2NH₃ ⇒ N₂ + 3H₂
conservation mass : mass reactants=mass product
0.28 NH₃= 0.25 N₂ + 0.03 H₂
2 g H₂ = 22.4 L
so for 0.03 g :

I am pretty sure that the answer is B. extrusive rock. I hope that this helps you!! Good Luck!!