Diamond consists of carbon atoms tetrahedrally arranged and bonded by strong covalent bonds. Graphite consists of carbon atoms arranged in hexagonal rings and in layers. Each carbon atom is bonded to three other atoms arranged hexagonally in layers.
Answer:
55
Explanation:
25g is less dense than 80g therefore will mostly float. if you subtract 80-25 that will leave you will 55 as the difference
Answer:
The answer to your question is:
Explanation:
Data
Ion charge of 2- and 18 electrons
Process
a) From which atom does this ion form?
If an Ion has a negative charge, it means that it has more electrons than the neutral atom. So, it the ion has 18 electrons, it means the neutral atom has 16 electrons.
In the periodic table we find that the atom with 16 electrons is Sulfur.
B) How do you know?
I have explained it.
An ion with a negative charge means that it gained the number of negative charges compare with the neutral atom.
When liquid evaporates we know that it's going from a liquid to a gas therefore going from an ordered state to a more chaotic disordered state meaning the entropy which is the measure of order, goes up. Since this is a spontaneous reaction at high temperatures and non spontaneous at low temperatures and free energy is negative for spontaneous then we can say at high temperatures free energy is negative and at high temps and positive at low temps. Also since evaporation requires energy to evaporate the enthalpy is positive.