Molar mass NF₂ => 52.00 g/mol
Atomic mass N => 14 a.m.u
% N = ( Atomic mass N / molar mass NF₂ ) x 100
( 14 / 52 ) x 100 = 26.92%
hope this helps!
You have to balance out those forces and apply the same amount of equal and opposite force to it. I hope I helped ^^
Answer:
v = 16.49 m/s
Explanation:
Given that,
Length of the string, l = 1.15 m
The ball makes 137 complete turns each minute.
We know that, 1 turn = 6.28 rad
137 turns = 860.79 rad
1 min = 60 s

We need to find the tangential velocity of the ball. It can be given by

So, the tangential velocity of the ball is 16.49 m/s.
Answer:
not sure if this is the right way to answer this question but PbS is Phosphate-buffered saline (i think)
Explanation:
A ammonia as it has the least molar mass