When carbon an oxygen combine chemically, the mass of the product is....
2 answers:
Answer:The correct answer is option (2).
Explanation:
According to Law of Conservation of Mass , mass can neither be created nor be destroyed.
In a balanced chemical equation of reaction , the mass of the reactant is always equal to the mass of the products. As we can observe this law in the chemical reaction between carbon and oxygen.
Total mass of reactant = 12 g/mol + 32 g/mol = 44 g/mol
Total mass of products = (12 g/mol + 2 × (16 g/mol)) = 44 g/mol
Since,the law of conservation of mass is justified by the above reaction .Hence ,the correct answer is option (2).
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Answer:
<h2>1.38 moles</h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>1.38 moles</h3>Hope this helps you