How many molecules are in the quantities below?
2.0 moles
0.75 moles
1.5x10^20
To find the number of molecules in a given quantity of moles, you can use Avogadro's number, which states that one mole of any substance contains 6.022 x 10^23 molecules.
For 2.0 moles:
Number of molecules = 2.0 moles x 6.022 x 10^23 molecules/mole
= 1.2044 x 10^24 molecules
Therefore, there are approximately 1.2044 x 10^24 molecules in 2.0 moles.
For 0.75 moles:
Number of molecules = 0.75 moles x 6.022 x 10^23 molecules/mole
= 4.5165 x 10^23 molecules
Therefore, there are approximately 4.5165 x 10^23 molecules in 0.75 moles.
To determine the number of molecules in a certain quantity, you can use Avogadro's number. Avogadro's number is defined as 6.022 x 10^23 and represents the number of particles (molecules, atoms, ions) in one mole of a substance.
To calculate the number of molecules, you can multiply the given quantity by Avogadro's number.
For the first quantity:
2.0 moles x (6.022 x 10^23 molecules/1 mole) = 1.2044 x 10^24 molecules
Therefore, there are approximately 1.2044 x 10^24 molecules in 2.0 moles.
For the second quantity:
0.75 moles x (6.022 x 10^23 molecules/1 mole) = 4.5165 x 10^23 molecules
Therefore, there are approximately 4.5165 x 10^23 molecules in 0.75 moles.