Answer:
A
Explanation:
They will collect samples from different sites and write their observations
Answer: nitrogen and hydrogen
Explanation:
2NH3 —> N2 + 3H2
If is an endothermic reaction.. heat is absorbed from the surrounding.. so it is Positive(+ve).. l hope it helped???
Answer:
nonpolar covalent bond
Explanation:
Covalent molecules made of only one type of atom, like hydrogen gas (H2), are nonpolar because the hydrogen atoms share their electrons equally.
Displacement is zero. Displacement is in reference to the starting and ending positions, so starting and ending in the same place would cause a net displacement of zero. Distance, however, is not zero. It is a measurement of the total amount moved, so if the object left the starting position, the distance is automatically not zero.