Answer:
Elements with unpaired valence electrons in the outer orbital are paramagnetic. Elements that are predicted to exhibit paramagnetic behavior may exhibit ferromagnetic behavior. Elements that contain only paired valence electrons are diamagnetic.
12 moles are needed because stoichiometry is 1:2
D
Answer: 35280 J of Gravitational energy
Solution:
Given:
Mass of the vehicle,(m)=1200kg

Maximum height reached,(h)= 3 m
Gravitational energy or gravitational potential energy can be calculated as;


Gravitational Energy = 35280 J