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Margaret [11]
3 years ago
10

Please help me this is my last question

Chemistry
1 answer:
aleksley [76]3 years ago
4 0

Answer:

Large Intestine, B

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Recall that you're hypothesis is that these values are the fractions of atoms that are still radioactive after n half life cycle
Sergeu [11.5K]

A= 0.5, B = 0.25 , C = 0.125, D = 0.015625 and E = 0.00390625

<h3>What is a hypothesis?</h3>

A research hypothesis is a statement of expectation or prediction that will be tested by research. Before formulating your research hypothesis, read about the topic of interest to you.

Half life of a substance is defined as the amount of time taken by the substance to reduce to half of its original amount.

Here n represents the number of half lives.

The amount of substance that remains after n half lives can be calculated using the given formula,

So when we have n =1,

Fraction of substance that remains = 0.5¹ = 0.5.

That means after first half life over, the amount of substance that remains is 0.5 times that of original.

Therefore we have A = 0.5

When n = 2, we have 0.5² = 0.25

So when 2 half lives are over, the amount of substance that remains is 0.25 times that of original

Therefore B = 0.25

When n = 3, we have 0.5³ = 0.125

So when 3 half lives are over, the amount of substance that remains is 0.125 times that of original.

Therefore we have C = 0.125

When n = 6 , we have 0.5⁶ = 0.015625

So D = 0.015625

When n = 8, we have 0.5⁸ = 0.00390625

Therefore E = 0.00390625

The values for A, B, C, D and E are 0.5, 0.25, 0.125, 0.015625 and 0.00390625 respectively.

Learn more about the hypothesis here:

brainly.com/question/17173491

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4 0
1 year ago
Calculate the average atomic mass for element X
mina [271]

Answer:

51.6058

Explanation:

The percentage of abundance is changed to decimal by dividing 100

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Which of the following represents an electron configuration that corresponds to the valence electrons of an element for which th
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The electron configuration that corresponds to the valence electrons of an element for which there is an especially large jump between the second and third ionization energies is ns^2.

The valence electron configuration of an atom refers to the arrangement of electrons on the outermost shell of the atom.

Recall that a large jump in ionization energy occurs when electrons are removed from inner shells of the atom.

If we study our options closely, we will discover that option A has only two electrons in the valence shell (ns^2).

This means that the third ionization energy involves removing electrons from an inner shell which leads to large jump.

Learn more: brainly.com/question/14283892

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Which chemical is a reactant in the reaction shown?<br> A. HCI<br> B. CO₂<br> C. H₂O<br> D. NaCI
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More detail please :)
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The substance that is a diatomic molecule is B. O2 Oxygen.
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