There is a question on my assignment that's asks how many moles of atoms are in x mol of CO2 (and a few others). Let X represent 5x10^-4. How do I do this? Teacher didn't really teach us this. I know in one mol of CO2 there is 2 moles of oxygen atoms, so how many in 5x10^-4 moles? Thanks!
To calculate the number of moles of atoms in a given amount of substance, you need to use Avogadro's number. Avogadro's number is approximately 6.022 x 10^23, and it represents the number of entities (atoms, molecules, or formula units) in one mole of a substance.
In the case of carbon dioxide (CO2), you correctly mentioned that one mole of CO2 contains 2 moles of oxygen atoms. Therefore, if you know the number of moles of CO2, you can multiply it by the number of moles of oxygen atoms per mole of CO2 to find the answer.
Let's solve the problem step by step. Given that X represents 5x10^-4 moles of CO2, we can calculate the number of moles of oxygen atoms using the following calculation:
Number of moles of oxygen atoms = (Number of moles of CO2) x (Number of moles of oxygen atoms per mole of CO2)
Plugging in the values:
Number of moles of oxygen atoms = (5x10^-4 mol) x (2 mol of oxygen atoms / 1 mol of CO2)
Next, we multiply 5x10^-4 by 2:
Number of moles of oxygen atoms = 1x10^-3 mol of oxygen atoms
So, there are 1x10^-3 moles of oxygen atoms in 5x10^-4 moles of CO2.
Remember to double-check the calculations and units.