Make a proportion
3 H2 - 2 NH3
19H2 - x
x = (19x2)/3= 12,666666
True . this is called a complex substance
I like playing basketball. So I'm the object in motion. Until an unbalanced force comes and hits me I fall and stay at rest.
Answer:
Explanation: This is done using the equation:

Because the Radius is a know value. We have the following.

Which is:
4188.7902 mm