Air is made up of mostly O2, N2 and CO2. if the total pressure of the air is 765 mmhg and P(n2)= 600 mmHg and P(CO2)=38 mmHg then what is the partial pressure of the O2 ?

127

Explanation:

Add the partial pressures up and then subtract the total from the added up thingy to get the pp of O2

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.  

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