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densk [106]
3 years ago
13

Who is the Administrator of Brainly??​Hopefully, someone will answer (◍•ᴗ•◍)❤

Chemistry
2 answers:
dexar [7]3 years ago
6 0

Answer:

I believe it

Explanation:

Kavisharma Haeze is the administrator of Brainly

sleet_krkn [62]3 years ago
3 0

Answer:

Hey mate....

Explanation:

This is ur answer....

.

Kavisharma/ Haezel is the admin of brainly......

hope it helps,

mark me as the brainliest.....

Follow me......xd

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Is Solar energy a matter?
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Answer:

Solar energy is a renewable free source of energy

Explanation:

It is sustainable and totally inexhaustible, unlike fossil fuels which are finite. It is also a non-polluting source of energy and it does not emit any greenhouse gases when producing electricity.

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The first-order rate constant for the decomposition of n2o5, 2n2o5(g)→4no2(g)+o2(g) at 70∘c is 6.82×10−3 s−1. suppose we start w
torisob [31]

The rate constant for 1st order reaction is

K = (2.303 /t) log (A0 /A)

Where, k is rate constant

t is time in sec

A0 is initial concentration

(6.82 * 10-3) * 240 = log (0.02 /A)

1.63 = log (0.02 /A)

-1.69 – log A = 1.63

Log A = - 0.069

A = 0.82

Hence, 0.82 mol of A remain after 4 minutes.

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According to the weather map seen here, we could expect weather conditions in Memphis to include
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Determine the wavelength of the energy that needs to be absorbed for a 3p electron in chlorine to be promoted to the 4s subshell
bazaltina [42]

Answer:

The wavelength of the energy that needs to be absorbed  = 52.36 nm

Explanation:

For this study;

Let consider the Rydgberg equation from Bohr's theory of atomic model:

i.e.

\dfrac{1}{\lambda} = R_H (Z^*)^2( \dfrac{1}{n_1^2}-\dfrac{1}{n_2^2})

where

Z* = effective nuclear charge of atom = Z - σ = 6

n₁ = lower orbit = 3

n₂ = higher orbit = 4

R_H = Rydyberg constant = 1.09 × 10⁷ m⁻¹

λ = wave length of the light absorbed

∴

\dfrac{1}{\lambda} = 1.09 \times 10^7}(6)^2( \dfrac{1}{3^2}-\dfrac{1}{4^2})

\dfrac{1}{\lambda} = 1.09 \times 10^7}(36)( \dfrac{1}{9}-\dfrac{1}{16})

\dfrac{1}{\lambda} = 392400000\times0.0486111111

\dfrac{1}{\lambda} =19075000

\lambda = \dfrac{1}{19075000}

\lambda = \dfrac{1}{1.91\times 10^7 \ m^{-1}}

\lambda = 5.236 \times 10^{-8} m

\lambda = 52.36 \times 10^{-9} m

\lambda = 52.36\  n m

Therefore, the wavelength of the energy that needs to be absorbed  = 52.36 nm

7 0
3 years ago
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