If we use the equation:
N2 + 3H2 --> 2NH3
Then
1 mol of Nitrogen required 3 moles of Hydrogen
x mols : 6.34mols
X = 6.34/3
X = 2.11 moles of Nitrogen are required.
C. fly in a straight line unless an outside force changes its course.
Answer:
Then final velocity of the coupled system of cars will be 0.58 m/s
Explanation: Let us consider the car-1 is moving towards right (say + ve direction) and car-2 is moving towards left (say in - ve direction), accordingly velocity are considered +ve and -ve.




Applying the conservation of momentum, and let the final velocity of combined system is V m/s


26250 - 9000 = 29500
V
V =
= 0.58 m/s
Then final velocity of the coupled system of cars will be 0.58 m/s
Yes, I think that the universe is way to large for there not to be other life forms out there.