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2 years ago

Describe the idea of excited electrons:

1 answer:

5 0

Excited electrons are those which temporarily occupy a state higher than their ground state

The electron is excited if it is given extra energy, such as when a photon, or packet of light, absorbs it or if it collides with an atom.

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Which statement best explains the students'

Sunny_sXe [5.5K]

Answer:

I believe this answer would be C. It looks fairly stable so it should remain that way over time.

Explanation:

8 0

2 years ago

The rate at which the concentration of a drug in the bloodstream decreases is proportional to the concentration at any time t. I

Westkost [7]

Answer:

$C(t) = C_oe^{-kt}$

Explanation:

From the given information:

At any given time (t), let c(t) represent the concentration of the drug present in bloodstream.

Deriving the equation:

$\dfrac{dC}{dt}$ decrease proportionally to Concentration C

i.e

$\dfrac{dc}{dt} \alpha - C$

$\dfrac{dc}{dt} = -k C$

$\dfrac{dc}{c} = -k dt$

$\int \dfrac{dc}{c} = -k \int dt$

㏑(C) = -kt + λ

where,

λ is the integration constant.

Integrating at t = 0, concentration of blood = Co g/mL

C(0) = Co

㏑(C₀) = 0 + λ

λ = ㏑(C₀)

From ㏑(C) = -kt + λ

㏑(C) = -kt + ㏑C₀

㏑(C) - ㏑C₀ = -kt

$\dfrac{C}{C_o} = e^{-kt}$

$C(t) = C_oe^{-kt}$

∴

The concentration of drug in blood at any time t is:

$C(t) = C_oe^{-kt}$

4 0

2 years ago

Which of the following resources would be considered green energy but not a renewable resource?

Mashcka [7]

Answer: I think it's Nuclear, sorry if I'm wrong!

Explanation:

5 0

3 years ago

What plant structure primarily allows a plant to preform photosynthesis

Ahat [919]

Answer:

chloroplasts

Explanation:

they are the organelles in plant cells that take in sunlight and make energy (photosynthesis)

4 0

3 years ago

Can someone please help me !!???

NemiM [27]

Answer:

Explanation:

that is how life began

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3 years ago