Answer:- Density is 2.54 gram per mL.
Solution:- 
Mass of the marble ball is given as 9.513 g and it's volume is 3.75 mL.
To calculate the density of the marble ball let's plug in the values in the formula:
So, the density of the marble ball is 2.54 gram per mL.
Answer:
Naphthalene is a non polar substance
Explanation:
In chemistry, the principle of like dissolves like is the over aching principle that controls the dissolution of one substance in another.
Naphthalene dissolves in diethyl ether because diethyl ether is a non polar solvent just as naphthalene is a nonpolar substance.
Since water is a polar solvent, it can not dissolves naphthalene at any pH because naphthalene is a nonpolar substance.
Answer is: 0.330 ppm
Hope this helps
If H+ would have to dissociate from a substance and must be the only positive ion in the solution that substance must be an acid.
CH3CHO is an aldehyde called acetaldehyde.
CH3CH2OH is an alcohol called ethanol
CH3OCH3 is an ether called dimethyl ether.
and finally, the answer CH3COOH is a weak acid called acetic acid.
