They both have the same number of atoms. The weight is different
Since each mole of carbon dioxide molecules contains two moles of oxygen atoms, as indicated by the formula CO2 for carbon dioxide, half a mole of carbon dioxide will have one mole of oxygen atoms.
A mole of water (H2O) molecules contains approximately 6.022 x 10^23 molecules. This number is known as Avogadro's number. Each mole of water molecules contains this specific number of molecules due to the atomic/molecular weight and mole concept.
A mole is a fundamental unit in chemistry that represents a quantity of substance containing approximately (6.022 \times 10^{23}) entities, such as atoms, molecules, or ions. This number is known as Avogadro's number. For example, one mole of carbon-12 contains (6.022 \times 10^{23}) carbon atoms, while one mole of water (H₂O) contains (6.022 \times 10^{23}) water molecules. The mole allows chemists to translate between the mass of a substance and the number of particles it contains.
200 molecules C3H8O (1 mole C3H8O/6.022 X 10^23)(3 mole C/1 mole C3H8O)(6.022 X 10^23/1 mole C) = 600 molecules of carbon atoms -------------------------------------------- Of course, you can just look at this set up and see there are 600 molecules. My answer set up is a formal set up. ( 200 * 3 would do it )
A mole of anything has the same number of molecules as a mole of anything else. The why comes from the fact that this is the standard definition as agreed by scientists. We have to have standards for things to work. A mole of anything contains an Avagadro number of particles. That number is 6.022 x 1023
Just one. A molecule is the smallest unit of a substance, so by just having "CO2" implies "1CO2". A coefficient is needed to indicate more than one molecule, such as "6CO2" which is six molecules of carbon dioxide.
One mole of any substance, including benzene, contains Avogadro's number of molecules, which is approximately (6.022 \times 10^{23}) molecules. Therefore, 1 mole of benzene contains about (6.022 \times 10^{23}) molecules of benzene.
Your question is irrelevant. I think that you were trying to find the number of molecules present in half a mole of water. 1 mole of water contains 6.023 * 1023 number of molecules. Hence half mole contains half of that number of molecules which is 3.0115*1023.
A mole of H2 molecules contains 6.023 x 10^(23) H2 molecules or 2 moles of H atoms (since each molecules has 2 atoms). A mole of CaCO3 (calcium carbonate) has one mole (Avogadro number) of Ca atoms, one mole of C atoms and 3 moles of O atoms.
One mole of any substance contains Avogadro's number of molecules, which is approximately (6.022 \times 10^{23}) molecules. This quantity is a fundamental concept in chemistry used to relate the mass of a substance to the number of molecules it contains. For example, one mole of water (H₂O) contains Avogadro's number of water molecules.
A molecule of carbon dioxide refers to a single unit of CO2 composed of one carbon atom and two oxygen atoms bonded together. A mole of carbon dioxide is a quantity that contains Avogadro's number of molecules (6.022 x 10^23), which is approximately 44 grams of CO2.
The total number of molecules is equal.