From the list provided, choose the reason that best matches your reasoning. The triple beam balance is for science classrooms and is more accurate. The kitchen scale measures to the nearest tenth of a gram. The triple beam balance data were measured to the nearest one hundredth oFrom the list provided, choose the reason that best matches your reasoning. The triple beam balance is for science classrooms and is more accurate. The kitchen scale measures to the nearest tenth of a gram. The triple beam balance data were measured to the nearest one hundredth of a gram. The kitchen scale data are more consistent. f a gram. The kitchen scale data are more consistent.

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.  

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.