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Question

What is the fraction of the mass of water due to neutrons?

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Answer

Mass of one mole (Avogadro Number) of neutrons ~ 1 g

Mass of the one neutrons =(1 /Β π΄π‘£π‘œπ‘”π‘Žπ‘‘π‘Ÿπ‘œ π‘π‘’π‘šπ‘π‘’π‘Ÿ (𝑁𝐴)) g

Mass of 8 molecule of water = π‘€π‘œπ‘™π‘Žπ‘Ÿ π‘šπ‘Žπ‘ π‘  / 𝑁𝐴

= 18 / 𝑁𝐴  Β  g

There are 8 neutrons of water = 18 / 𝑁𝐴

Mass of one molecule of water = π‘€π‘œπ‘™π‘Žπ‘Ÿ π‘šπ‘Žπ‘ π‘  / 𝑁𝐴

= 18 / 𝑁𝐴  Β g

Fraction off mass of the water due to neutrons ~ 8 / 18

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A health food store has a large display of bracelets made of copper metal. The storekeeper claims that the copper atoms from the bracelet diffuse into the body and the wearer is protected against rheumatoid diseases. Kuber wants to buy a bracelet for his grandmother who is suffering from arthritis. But his friend Ramesh suggests him against it. He says that it is a superstitious belief and wearing any metal on the body does not cure someone of the disease. Answer the following questions based on the above information: (π’Š) Do you think that Kuber should agree to Ramesh’s advice and not buy the bracelet? Give one reason. (π’Šπ’Š) What values are displayed by Ramesh through his suggestion? (π’Šπ’Šπ’Š) Suggest one activity to promote these values.

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