Answer to the question
D. Petroleum
Answer:
Mass = 30 g
Explanation:
Given data:
Mass of hydrogen needed = ?
Number of moles of ammonia produced = 10 mol
Solution:
Chemical equation:
N₂ + 3H₂ → 2NH₃
Now we will compare the moles of ammonia and hydrogen.
NH₃ : H₂
2 : 3
10 : 3/2×10 = 15 mol
Mass of hydrogen needed:
Mass = number of moles × molar mass
Mass = 15 mol × 2 g/mol
Mass = 30 g
Answer:
lets be honest
Explanation:
no one knows and this is worthless to answer for the worth of 5 points
Answer: Yes the statement is true.
Explanation: Endorphins are chemicals produced by the human bodies to relieve stress and pain.
They are produced mainly by brain and help to transmit electrical signals within nervous system, thus are called as neurotransmitters.
They are also called as "feel good chemicals" as they can act as pain relievers and happiness booster and thus lead to better emotional health.
Answer : The mass of 
required is 18.238 grams.
Explanation : Given,
Mass of 
= 83.10 g
Molar mass of = 146 g/mole
Molar mass of = 256.52 g/mole
The balanced chemical reaction is,
First we have to determine the moles of .
Now we have to determine the moles of .
From the balanced chemical reaction we conclude that,
As, 8 moles of produced from 1 mole of
So, 0.569 moles of produced from 
mole of
Now we have to determine the mass of .
Therefore, the mass of required is 18.238 grams.
