Answer: Sorry, I do not understand.
Indique dos diferencias entre la filtración por gravedad y la filtración al vacío.
?
Answer:
A and B
Explanation:
The ionic bond is formed when there is large electronegativity difference is present between the bonded atoms.
Ionic bond:
It is the bond which is formed by the transfer of electron from one atom to the atom of another element.
Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.
For example:
Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion. Both atoms are bonded together electrostatic attraction occur between anion and cations.
Now we will calculate the electronegativity difference between given atoms.
A -B (3.44 - 0.79)
A - B (2.65)
B - C (1.8 -0.79)
B - C (1.01)
A - D (3.44 - 1.8)
A - D (1.64)
C - D (2.0 - 1.8)
C - D (0.2)
So, A and B are most likely to form ionic bond.
Answer:
Dead bodies lose one degree Celsius per hour, which we could deduce that the person died 12 hours ago.
Explanation:
On the other hand, it is very important to take into account that this number of hours is very approximate, since not only does it vary greatly with the environment and the acclimatization of the environment in which the person dies, but also in this specific case, insulating clothing was presented , which made the loss of body heat much more difficult and could easily be more than 12 hours.
The minimum for this particular situation is 12 hours to 24 hours possible postmortem.
Answer:
water table is the level below which the ground is saturated with the water
