A 38.2g sample of hydrogen gas, H, is placed into a 2-L soda bottle. IfI keep the pressure and temperature constant, how large would my container need to be if I increased hydrogen's mass to 50.0-g?

Explanation:

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In this case, according to the given problem, it is possible for us to notice that the equation to be used is the Avogadro's one in terms of mass because this is applied to the same gas, hydrogen:

Thus, by considering both the initial and final masses and the initial volume, we can compute the final volume as shown below:

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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.

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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.