Answer:
See answer below
Explanation:
This is pretty easy to solve. First you need to understand that an ionic compound is usually formed between a metal and a non metal. This usually happens between elements from group 1 through group 10 or 11 of the periodic table. A covalent compound is always given in non metal elements from the periodic table, and it's usually the elements from group 13 through group 17.
Some compounds there are missing some atoms, but I manage to find this question and saw the atoms missing, so, in my answer you will see the corrected compound. so don't be surprised.
According to what I state above, then the covalent compounds are:
C₆H₅N
PCl₃
C₂H₄O
NH₃
N₂
SO₄²⁻
The ionic compounds are:
CaO
CdBr₂
WO₂
Na₂O
CsF
Hope this helps
This question is about momentum conservation, which belong to physics subject.
You start by assuming that the friction coefficient of bwtween the roller skates and the ice is very low and think there is not friction.
Under those circumstances the convservation of momentum implies:
1) When the roller skater throws the 2 kg balls, it will acquire a momentum equal to v*2kg and the skater will acquire equal momentum in the opposite direction.
That means that the skater will step back and away from the other skater.
2) When the second skater receives the ball with momentum 2kg*v, he will move backward also and further away.
In conclusion, the two skaters will end standing more than 5 m apart facing each other.
Answer:
30%
Explanation:
I don't know how to explain but I learnt this yesterday
Answer:
Explanation:
Since the transferred heat is equal to the change in the internal energy, the heat is proportional to the mass of the substance and the temperature change. The transferred heat also depends on the substance so that, for example, the heat necessary to raise the temperature is less for alcohol than for water. Hope that helps!:)
Answer:
C
Explanation:
energy is measures the capacity to do work.