All isotopes of a particular element have the same atomic number. how then do the isotopes of a particular element differ?
2 answers:
Answer: Option (b) is the correct answer.
Explanation:
Isotopes are the species that have same atomic number.
For example, and
are isotopes. As both of them has 6 protons and there are 6 neutrons in
. There are 7 neutrons in
.
It is known that atomic number is the total number of present in an atom. Whereas mass number is the sum of total number of protons and neutrons present in an atom.
Atomic mass = no. of protons + no. of neutrons
Therefore, we can conclude that when two elements are isotopes then the isotopes of a particular element differ as they have less or more neutrons.
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Answer:
Approximately 6.81 × 10⁵ Pa.
Assumption: carbon dioxide behaves like an ideal gas.
Explanation:
Look up the relative atomic mass of carbon and oxygen on a modern periodic table:
- C: 12.011;
- O: 15.999.
Calculate the molar mass of carbon dioxide :
.
Find the number of moles of molecules in that sample of
:
.
If carbon dioxide behaves like an ideal gas, it should satisfy the ideal gas equation when it is inside a container:
,
where
is the pressure inside the container.
is the volume of the container.
is the number of moles of particles (molecules, or atoms in case of noble gases) in the gas.
is the ideal gas constant.
is the absolute temperature of the gas.
Rearrange the equation to find an expression for , the pressure inside the container.
.
Look up the ideal gas constant in the appropriate units.
.
Evaluate the expression for :
.
Apply dimensional analysis to verify the unit of pressure.