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zvonat [6]
4 years ago
15

What is a cuttlebone

Biology
1 answer:
Scorpion4ik [409]4 years ago
5 0

Answer:

Cuttlebone, also known as cuttlefish bone, is a hard, brittle internal structure found in all members of the family Sepiidae, commonly known as cuttlefish, a family within the cephalopods. Cuttlebone is composed primarily of aragonite. i hope that helps u

Explanation:

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A scientific model is easier to interpret and understand when it includes the main parts or processes, rather than every detail
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8 0
3 years ago
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How does energy acquisition in the deep sea differ from energy acquisition near the ocean’s surface?
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5 0
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A certain first-order reaction a → b is 25% complete in 42 min at 25°c. What is the half-life of the reaction?
yan [13]

Answer:

t_{\frac{1}{2}} = 101.16 minutes

Explanation:

For a First order reaction, the rate constant is determined by

k = \frac{2.303}{t} log \frac{a}{a-x}

Where

k= rate constant

t= time required for a reaction

a= initial concentration

x= amount of reactant decomposed in time t

a-x= amount of reactant left after time t

Let the initial concentration be 100

Then

x = 25\\a-x = 75

Substituting the given values in above equation, we get -

k = \frac{2.303}{42} log \frac{100}{75} \\

k = 6.85 *10^{-3}

Also,

k = \frac{0.693}{t_{\frac{1}{2}} } \\t_{\frac{1}{2}} = \frac{0.693}{6.85 *10^{-3}}\\

t_{\frac{1}{2}} = 101.16 minutes

Read more on Brainly.in - https://brainly.in/question/6804668#readmore

7 0
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Which statement is true about crossing over of genes?
irina1246 [14]

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You need to at least show us what to pair with.
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