Answer:
5 km North
Explanation:
Displacement refers to the distance covered in a specific direction.
In this case,
Distance covered due north = 8 km
Distance covered due south = 3 km
Therefore;
If we take the distance towards north to be +8 km
The distance towards south to be - 3 km
Then;
Displacement = +8km + (-3km)
= + 5km
= 5 km North
Therefore;
The displacement is 5km towards North.
Answer:
C
Explanation:
Think of 'exo' as exit and 'thermic' as relating to thermal energy/ heat. Thus, an exothermic release thermal energy as the reaction proceeds.
In an exothermic reaction, the total energy of the products is lesser than that of the reactants and ΔH (change in energy) is less than zero.
When heat is absorbed as the reaction proceeds, the chemical reaction is an endothermic reaction.
Answer: true
Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. An atom's electron shell can accommodate 2n2 electrons (where n is the shell level).
Answer:
[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter
Explanation:
The pH is calculated with the formula:
pH = -lg[H₃O⁺]
From here the concentration of hydronium ion (H₃O⁺) will be:
[H₃O⁺] =
[H₃O⁺] =
[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter
Answer:
nilon is inorganic so they can be in the soil up to 5000 years
Explanation: