Answer:
The answer to your question is: water, polar solvent.
Explanation:
Data
sample of CaCl2
Solid copper this option is incorrect because in order to dissolve something the solvent must be liquid and this is a solid solvent.
water, I think this option is right, because CaCl2 is ionic and water is a polar solvent, CaCl2 will dissolve in water.
a polar solvent, CaCl2 will dissolve is a polar solvent like water, this option is correct.
hexane, CaCl2 will not dissolve in hexane because hexane is a non polar solvent and CaCl2 is ionic. This option is wrong
a nonpolar solvent This option is not right, CaCl2 will only dissolve in polar solvents.
liquid mercury, This option is wrong, mercury is not a solvent.
<span>Since chlorine (Cl) is the molecule which attracts the
electron therefore it would become negatively
charged (Cl -), while the sodium (Na) on the other hand will become
positively charged (Na +).</span>
This process of one element stealing away the electron of
another element happens when one is more electronegative than the other. The
more electronegative element attracts the electron of the less electronegative
element. This is actually what happens during an ionic bond between a metal and
a non metal. The negatively charged ion is called the anion while the
positively charged ion is called as the cation.
Answer:
<span>negatively charged</span>
Answer:
0.605 molal
Explanation:
molality is the amount of solute in a particular mass of solvent.
lets calculate the amount of benzene solute.
mass of benzene= 13.3g
molar mass of C6H6= 12*6 +1*6 =72+7=78g/mol
amount of benzene= mass/molar mass
=13.3/78
=0.1705mol
molality= amount of solute/mass of solvent in kg
mass of solvent=282g=0.282kg
molality = 0.1705/0.282
=0.605 molal
Answer:
The box will move towards me by the additional force of 60N.
Explanation:
I am pulling the box with a force of 30N and my friend is pushing the box in the same direction with a force of 30N.
Here two forces are exhibited in the same direction that is towards myself as a result the box will move towards me by an additional force of 30N+30N=60N.
