Answer:
Below.
Explanation:
Because of the hydrogen bonding that occurs in water. Oxygen is more electronegative than sulphur and forms inter molecular bonding between the H+ and O- ions in the water. This does not occur in H2S.
B-I can’t see the diagram but tissues are a collection of cells
Answer:
i = 1
Explanation:
Van't Hoff factor (i) is explained as the number of ions dissolved in solution.
It is needed to determine colligative properties which depend on the amount of solute.
C₇H₇NO is an organic compound → benzamide
All the organic compound have 1, as Van't Hoff factor.
In order to predict i, you consider ionic salts. For example:
AlCl₃
CaCl₂
NH₄NO₃
When you dissociate them, you determine i:
AlCl₃ → Al³⁺ + 3Cl⁻ i =4
CaCl₂ → Ca²⁺ + 2Cl⁻ i = 3
NH₄NO₃ → NH₄⁺ + NO₃⁻ i =2
Answer: -
C) because the moon rotates once on its axis in the same time that it takes to revolve around the earth
Explanation: -
The moon rotates about it's axis one full time at about the same time as it takes to rotate around the earth.
This leads to only one side of the moon always appearing to Earth, called the near side.
One side of the moon is always not seen from the earth. It is called the far side of the moon.
Thus we can never see the far side of the moon because the moon rotates once on its axis in the same time that it takes to revolve around the earth
250f degrees
-3.0c
360f boiling -4.0c freezing
34g/mol