5. differences in which property allow the
separation of a sample of sand and seawater by
filtration?
a) concentration of ions
b) volume of sample
c) mass of sample
d) particle size

option D = particle size

Explanation:

The particles size of sand is greater then the pore size of filter paper and can not passed through the filter paper and easily filter out. While salt present in sea water are easily pass through the pore of filter paper.

The solution of sand and water is suspension.

Properties of suspension:

The particle size in suspension is greater than 1000 nm.

These particles can seen through naked eye.

It is heterogeneous.  

The particles in suspension can be separated through the filtration.

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation:

your parents i think this could be it