Explanation:
I think B a chemical change
Answer:
hlo please help me to do my question
Answer: The molecule 
is expected to have a dipole moment of zero.
Explanation:
The product of magnitude of the charge calculated in electrostatic units is called dipole moment.
Formula for dipole moment is as follows.
Dipole moment = Charge (in esu) 
distance (in cm)
Non-polar molecules have zero dipole moment.
For example, is a non-polar molecule so its dipole moment is zero.
is a polar molecule so it will have dipole moment.
is a polar molecule so it will have dipole moment.
has nitrogen atom as more electronegative than hydrogen atom. So, net dipole moment will be in the direction of nitrogen atom.
Thus, we can conclude that the molecule is expected to have a dipole moment of zero.
Answer:
hit with force when moving.
"she collided with someone"
Similar:
crash (into)
come into collision (with)
bang (into)
slam (into)
impact (with)
hit
strike
run into
meet head-on
smash into
smack into
cannon into
plow into
bump into
crack into/against
knock into
dash against
barrel into -
come into conflict or opposition.
"in his work, politics and metaphysics collide"
Explanation:
