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seropon [69]
3 years ago
5

Read the following hypothesis about why a chicken bone becomes bendy after being soaked in vinegar: The bone can bend because th

e acid in the vinegar has removed the calcium that made it hard. What prediction could be made based on this hypothesis? A. An acidic substance like many drinks wouldn't make bones bendy. B. Acids are very powerful substances and should be handled with care. C. Other kinds of bones containing calcium wouldn't get bendy in the vinegar. D. If the acid was separated from the vinegar, chicken bones wouldn't become bendy in the remaining vinegar.
Chemistry
2 answers:
Genrish500 [490]3 years ago
7 0

Answer:

D. If the acid was separated from the vinegar, chicken bones wouldn't become bendy in the remaining vinegar.

Explanation:

The hypothesis states that the bone becomes bendy because of the acid in the vinegar, so therefore, if the acid is removed from the vinegar it won't become bendy.

kakasveta [241]3 years ago
6 0

Answer:

d

Explanation:

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A student analyzed an antacid tablet from a bottle containing 120 tablets purchased for $2.79. The mass of the tablet was 1.247
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The cost of one antacid is 2.325 cents per tablet.

<u>Explanation:</u>

As per the question based on the student analysis we know that,

Total antacid tablets in a bottle = 120

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Cost of 1 antacid tablet =\frac{2.79}{120}  

As we know $1 = 100 cent

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Answer:

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Determine the volume in mL of 0.37 M HClO4(aq) needed to reach the half-equivalence (stoichiometric) point in the titration of 2
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Answer:

14.3mL you require to reach the half-equivalence point

Explanation:

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As the reaction is 1:1, to reach the equivalence point you require to add the moles of HClO₄ equal to moles CH₃CH₂NH₂ you add originally. Also, half-equivalence point requires to add half-moles of CH₃CH₂NH₂ you add originally.

Initial moles of CH₃CH₂NH₂ are:

20.8mL = 0.0208L × (0.51mol CH₃CH₂NH₂ / 1L) =

0.0106moles CH₃CH₂NH₂

To reach the half-equivalence point you require:

0.0106moles ÷ 2 = 0.005304 moles HClO₄

As concentration of HClO₄ is 0.37M, volume you require to add 0.005304moles is:

0.005304 moles HClO₄ ₓ (1L / 0.37mol) = 0.0143L =

<h3> 14.3mL you require to reach the half-equivalence point</h3>

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Answer:

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