1) Assume M refers to a general element and Z referes to other general element.
2) Assume the chemical formula of the ionic compound is MₓZₐ
3) Then the dissociaton would be written:
MₓZₐ → XMᵃ⁺ + AZˣ⁻
That means that the ionic compoud will lead to the X cations Mᵃ⁺ whose oxidation state are a+, and A anions Zˣ⁻ whose oxidation state is x⁻.
5) For example: MgBr₂ (aq) → Mg⁺² (aq) + 2Br⁻ (aq)
6) Explanation: since the water molecules are polar, they will surround (solvate) the three ions that form the compound MgBr₂, overcoming the electrostatic forces that hold together the atoms in the ionic lattice.
Answer:
Water
Explanation:
To solve this problem, we need to solve for the number of molecules of these compounds;
given:
Mass of water = 1.25g
Mass of C₂H₅OH = 0.89g
We first solve for the number of moles of these compounds;
Number of moles = 
Molar mass of H₂O = (2x1) + 16 = 18g/mole
Molar mass of C₂H₅OH = (12 x 2) + (1 x 5) + 16 + 1 = 46g/mole
Number of moles of H₂O =
= 0.07moles
Number of moles of C₂H₅OH =
= 0.02moles
We see that number of moles of water is more than that of ethanol. Therefore it has more molecules because;
1 mole of substance = 6.02 x 10²³
0.02moles of ethanol = 1.2 x 10²²molecules of ethanol
0.07moles of water = 4.2 x 10²² molecules of water
Solar energy.
This whole process starts with the solar energy. It also involves the sun within the process. Solar energy is radiant light and heat that comes from the sun. So it seems to fit in with the story that was given.
Best of luck on your assignment!
- Emacathy
Answer:
For every 5 psu increase in salinity, the freezing point decreases by 0.28 degrees Celsius (0.5 degrees Fahrenheit); thus, in polar regions with an ocean salinity of about 32 psu, the water begins to freeze at -1.8 degrees Celsius (28.8 degrees Fahrenheit).
Explanation: