A mole of helium gas contains 6.02x10^23 helium atoms. How many helium atoms are there in a millimole of helium? In a kilomole
You have to be kidding. "milli" means on thousandth. Multiply by 1e-3
Kilo means one thousand. Multiply by 1e3
To find the number of helium atoms in a millimole of helium, we need to know the relationship between the number of moles and the number of atoms.
We know that 1 mole of helium gas contains 6.02x10^23 helium atoms. This is known as Avogadro's number (N₀). Therefore, we can determine the number of atoms in any given number of moles by multiplying the moles by Avogadro's number.
A millimole is one-thousandth (1/1000) of a mole. So, to find the number of helium atoms in a millimole of helium, we multiply the number of moles by Avogadro's number.
Number of helium atoms in a millimole of helium = (6.02x10^23 atoms/mole) x (0.001 mole)
Simplifying the expression, we get:
Number of helium atoms in a millimole of helium = 6.02x10^20 helium atoms
Now, let's calculate the number of helium atoms in a kilomole of helium.
A kilomole is one thousand (1000) moles. So, to find the number of helium atoms in a kilomole of helium, we multiply the number of moles by Avogadro's number.
Number of helium atoms in a kilomole of helium = (6.02x10^23 atoms/mole) x (1000 moles)
Simplifying the expression, we get:
Number of helium atoms in a kilomole of helium = 6.02x10^26 helium atoms