2 years ago

Explain the Sun's role in the water cycle

Chemistry

1 answer:

timama [110]2 years ago

3 0

It causes the water to evaporate from the earths surface so that it can cycle through again

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What is the formula name for Co3N2

Ede4ka [16]

Answer:

Cobaltous Nitride,I think so anyway.......

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The chemical formula tells the types of atoms and how many of each are contained in a compound. Please select the best answer fr

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3 years ago

4. DBearded waste of Co-60 must be stored until it is no longer radioactive. Cobalt-60

Bingel [31]

464 g radioisotope was present when the sample was put in storage

<h3>Further explanation</h3>

Given

Sample waste of Co-60 = 14.5 g

26.5 years in storage

Required

Initial sample

Solution

General formulas used in decay:

$\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}$

t = duration of decay

t 1/2 = half-life

N₀ = the number of initial radioactive atoms

Nt = the number of radioactive atoms left after decaying during T time

Half-life of Co-60 = 5.3 years

Input the value :

$\tt 14.5=No.\dfrac{1}{2}^{26.5/5.3}\\\\14.5=No.\dfrac{1}{2}^5\\\\No=\boxed{\bold{464~g}}$

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2 years ago

How many meters are in a kilometer.

Anika [276]

Answer:

1,000 meters in 1 kilometer

Explanation:

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2 years ago

Which color of light has the greatest energy

ozzi

Answer:

violet

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Waves with a short wavelength have the most energy. Red waves have a relatively long wavelength (in the 700 nm range), and violet waves are much shorter - roughly half that. Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy (google)

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2 years ago