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omeli [17]
3 years ago
10

Bones kept in hydrochloric acid becomes soft why?

Biology
1 answer:
DanielleElmas [232]3 years ago
7 0

Bones are made up of Calcium Phosphate given by the chemical formula, Ca_{3}(PO_4)_2. When bones are kept in Hydrochloric acid, given by the chemical formula, HCl, they become soft because the calcium compound present in the bones changes its form. The following double displacement reaction takes place when the bones are kept in HCl,

Ca_{3}(PO_{4})_{2} + HCl ---> CaCl_{2} + H_{3}PO_{4}

Calcium chloride is water soluble, and gets washed away. This makes the bone thin and soft.

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É correto afirmar que a presença de lagartas em espigas de milho se deve:
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Answer:

C - ao desenvolvimento de ovos depositados por borboletas.

Explanation:

Antes de responder a sua pergunta, eu preciso te explicar que esse não é o servidor brasileiro e sim o servidor dos EUA, você deve ter percebido que toda a linguagem do site esta em inglês. Isso significa que você só deve postar perguntas em português no campo "World Languagens" mesmo que a sua pergunta seja de biologia como essa. Caso você não faça isso, a sua pergunta pdoe ser excluída, sem ser respondida.

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É impossivel que um grão e milho vire uma lagarta, ou que o sabubo apodrecido pode gerar lagartas. Além disso, o ´processo de geração espontanea é uma teoria cientifica invalida e que não deve ser considerada.

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3 years ago
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What is the question ??

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The best answer would be:

 

Osteoarthritis

 

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8 0
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