What molecules are found in all or almost all organic compounds?
2 answers:
<u>Answer:</u> The correct answer is Option d.
<u>Explanation:</u>
Organic compounds are defined as the compounds which are found in living organisms.
These compounds mainly consists of carbon atoms which are covalently bonded to hydrogen, oxygen and nitrogen atoms.
<u>For Example:</u>
Both the compounds are organic compounds because carbon is bonded to nitrogen, oxygen and hydrogen atoms.
Main elements present in any organic compound are carbon and hydrogen.
Hence, the correct answer is Option d.
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Your question is incomplete. However, I found a similar problem fromanother website as shown in the attached picture.
To solve this problem, you must know that at STP, the volume for any gas is 22.4 L/mol. So,
Moles O₂: 156.8 mL * 1 L/1000 mL* 1 mol/22.4 L = 0.007 moles
Mass calcium: 0.007 mol O₂ * 2 mol Ca/1 mol O₂ * 40 g/mol Ca =<em> 0.56 g Ca</em>
To solve this problem, you must know that at STP, the volume for any gas is 22.4 L/mol. So,
Moles O₂: 156.8 mL * 1 L/1000 mL* 1 mol/22.4 L = 0.007 moles
Mass calcium: 0.007 mol O₂ * 2 mol Ca/1 mol O₂ * 40 g/mol Ca =<em> 0.56 g Ca</em>