What are the two aplications of filtration​

Explanation:

Purification. Filtration is extremely important to keep things like water, chemicals, and pharmaceuticals clean, pure and free of contaminants. If it wasn't for filtration, we might not have safe drinking water, because it plays a crucial role in eliminating sediment, sand, gravel, carbon and other suspended particles.

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43.452

step-by-step explanation:

284 times .153 = 43.452

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.