There are 2 atoms of nitrogen in this chemical formula
We know this because outside the bracket, there is a 2 which means everything inside the bracket is multiplied by that 2, meaning there will be 2 atoms of nitrogen and 6 atoms of oxygen.. And 1 atom of nickel as nickel isn't included inside the brackets
D
Using the kinetic energy 1/2mv^2 formula
5*10^5 is the answer
Answer:
C
Explanation:
Because...
A= Incideant ray
B= Angle of inciderance
<u>C= angle of reflection</u>
D= reflection ray