98 grams of potassium chloride are added to 217 grams of water. the volume of the water is 200 cm3. when the water reaches saturation, the undissolved salt is removed. if potassium chloride has a solubility of 95 g/dm3, what is the mass of the final solution?

-

236 g

Explanation: -

Solubility of KCl = 95 g/ dm³

Volume of the water = 200 cm³ = = 0.2 dm³

Amount of KCl dissolved = Volume of the water x Solubility

= 0.2 dm³ x 95 g/ dm³

= 19 g

Mass of water taken = 217 g

Total mass of solution = Mass of water + Amount of KCl dissolved

= 217 g + 19 g

= 236 g

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.  

the answer would be b i believe