How many atoms of carbon are in 5.9 moles of c3h8? . tell me the process of solving the problem as well.

The sample contains 1.066 x 10^25 carbon atoms.

Explanation:

Each molecule of C3H8 contains 3 carbon atoms. Therefore, for however many molcules of C3H8 you have, there will be 3 times as many C atoms. You are told you have 5.9 moles of C3H8, so you have 3 times as much, 3 x 5.9 = 17.7 moles of carbon atoms.

If you want to know how many actual atoms you have, multiply the moles by Avogadro's number:

17.7 x 6.022 x 10^23 = 1.066 x 10^25 carbon atoms

c. 75.7

i think that is the right

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.