I believe the answer is B.
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.
Answer:
Yes
Explanation:
1 mol of any substance is equal to the avagadro constant
Answer:
2) HClO3 is stronger because chlorine is more electronegative than iodine.
Explanation:
The more electronegative the element is the more strong or acidic it becomes.
Chlorine being more electronegative than Iodine makes it easier for it to pull the electron of hydrogen more strongly and hence has a higher tendency to release a H+ unit. Hence that makes it stronger.
It is the atomic mass because you add the protons and neutrons together to get this number
