Carbon atoms in glucose come from carbon dioxide.
Moles are the product of the molar concentration and the volume of the solution. The moles of Ferric chloride is 0.118 moles.
<h3>What are moles?</h3>
Moles are the smallest unit of the measurement of atoms and molecules. It is calculated by the molar concentration and the volume of the solution.
Given,
Molar concentration of ferric chloride = 0.762 M
Volume of solution = 0.155 L
Moles are calculated as:

Therefore, 0.118 moles of ferric chloride are present in the sample.
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By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Well a molecule of water is equal to 1 Oxygen and 2 Hydrogen each, so it'd be 2 molecules of water