Laura is separating a mixture of sand and water by decanting. She lets the sand all settle to the bottom of the container and then slowly pours the water into a new, clean container. This leaves all the sand behind in the bottom of first container
Why is decanting an effective method of separation for water and sand?
OA. Water and sand have similar properties.
ОВ.
Water and sand have different densities.
OC.
Water and sand are both pure substances
OD
Water and sand have different colors.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

explanation:

0.07 g/cm³

1.37 g/cm³

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

diaria maybe go see a doctor about that