Salt is ionic, and oil is covalent. if you add water, the salt will dissolve in the water, and the oil will float to the top. you could then skim the oil and start over with sugar. to double-check, you could even make sure the oil does not conduct electricity!

Is this a question?

Cause if it is I dont understand it.

Salt is ionic, and oil is covalent. If you add water, the salt will dissolve in the water, and the oil will float to the top. You could then skim the oil and start over with sugar. To double-check, you could even make sure the oil does not conduct electricity!

Explanation:

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.