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3 years ago

The fraction mode below shows the steps a student performed to find a quotient. Which statement best interprets the quotient

Mathematics

1 answer:

nataly862011 [7]3 years ago

6 0

Answer: i belive its C

Step-by-step explanation: May i have brainiest

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trapecia [35]

Answer:

option A

Step-by-step explanation:

given,

sample of tritium, ³H

$t_{1/2} = 12.32 years$

contents present of ³H = 5.25 mol

content of ³He = 6.35 mol

reaction

$^3H\rightarrow \ ^3He$

A₀ is the initial concentration

At is the concentration after time t

A₀ = 5.25 + 6.35 = 11.6 mol

At = 5.25

now,

$k = \dfrac{0.693}{t_{1/2}}$

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k = 0.0563 /year

$ln(\dfrac{A_o}{A_t}) = k t$

$t = \dfrac{1}{k} ln(\dfrac{A_o}{A_t})$

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