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vitfil [10]
3 years ago
13

Compare blue and violet light. which one has the highest energy? Longest wavelength?

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
4 0

Answer:

Blue

Explanation:

Blue would have the longest wave length because following ROY G BIV the wave length distance between the two decreases as you move from Red to Violet.

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A radioactive element reduces to 5.00% of its initial mass in
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The half-life in months of a radioactive element that reduce to 5.00% of its initial mass in 500.0 years is approximately 1389 months

To solve this question, we'll begin by calculating the number of half-lives that has elapsed. This can be obtained as follow:

Amount remaining (N) = 5%

Original amount (N₀) = 100%

<h3>Number of half-lives (n) =?</h3>

N₀ × 2ⁿ = N  

5 × 2ⁿ = 100

2ⁿ = 100/5

2ⁿ = 20

Take the log of both side

Log 2ⁿ = log 20

nlog 2 = log 20

Divide both side by log 2

n = log 20 / log 2

<h3>n = 4.32</h3>

Thus, 4.32 half-lives gas elapsed.

Finally, we shall determine the half-life of the element. This can be obtained as follow.

Number of half-lives (n) = 4.32

Time (t) = 500 years

<h3>Half-life (t½) =? </h3>

t½ = t / n

t½ = 500 / 4.32

t½ = 115.74 years

Multiply by 12 to express in months

t½ = 115.74 × 12

<h3>t½ ≈ 1389 months </h3>

Therefore, the half-life of the radioactive element in months is approximately 1389 months

Learn more: brainly.com/question/24868345

8 0
3 years ago
Describe the general chemical formula of carbohydrates holt
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1. Which pair of elements will form an IONIC bond?
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Answer:

Sodium and Chlorine would be the answer for this :)

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