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MrRissso [65]
3 years ago
6

(ZOOM IN TO SEE )plzzzz

Chemistry
1 answer:
leva [86]3 years ago
4 0

Answer:

c

Explanation:

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When the number of protons and electrons are the same the atom is
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According to Table I, which salt releases energy as it dissolves?
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Hydrogen 3 has a half life of 12.32 years a sample of h-3 weighing 3.02 grams is left for 15.0 years what will the final weight
yawa3891 [41]

Answer:

The final mass of sample is 1.3 g.

Explanation:

Given data:

Half life of H-3 = 12.32 years

Amount left for 15.0 years = 3.02 g

Final amount = ?

Solution:

First all we will calculate the decay constant.

t₁/₂ = ln² /k

t₁/₂ =12.32 years

12.32 y =  ln² /k

k = ln²/12.32 y

k = 0.05626 y⁻¹

Now we will find the original amount:

ln (A°/A) = Kt

ln (3.02 g/ A) = 0.05626 y⁻¹ × 15.0 y

ln (3.02 g/ A) = 0.8439

3.02 g/ A = e⁰°⁸⁴³⁹

3.02 g/ A = 2.33

A = 3.02 g/ 2.33

A = 1.3 g

The final mass of sample is 1.3 g.

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3 years ago
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The molecular weight of vitamin C , C6H8O6 is 176.12 grams over mol
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Answer:

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Explanation:

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Answer:

eukaryotic because it has a nucleus

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