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STALIN [3.7K]
3 years ago
13

Sooo who wanna be friends?

Chemistry
2 answers:
antiseptic1488 [7]3 years ago
8 0

Answer:

I wanna be friend

Explanation:

PSYCHO15rus [73]3 years ago
4 0

Answer:

no, (ᅌᴗᅌ* ) thank you

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El NaCI corresponde a un elemento?
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Answer:

Sodio (Na), elemento químico del grupo de los metales alcalinos (Grupo 1 [Ia]) de la tabla periódica. El sodio es un metal blanco plateado muy suave. El sodio es el metal alcalino más común y el sexto elemento más abundante en la Tierra, y comprende el 2,8 por ciento de la corteza terrestre.

Explanation:

Espero que esto ayude a marcar el MÁS CEREBRAL !!!

7 0
3 years ago
For a hydrogen- like atom, classify these electron transitions by whether they result in the absorption or emission of light:
IRISSAK [1]

When an electron transit from lower level to higher level it emits energy

When an electron transit from higher level from a lower level it absorbs energy

n=3 to n=5,  : absorption

n=1 to n=3,  : absorption

n=3 to n=2,  : emission

n=2 to n=1 : emission

the highest energy means highest wave number

wave number = Rh (1/ n1^2 - 1/n2^2)

Rh = 1.1 X 10^7 m^-1

1) n=3 to n=5

wavenumber = Rh ( 1/ 9 - 1/ 25) = 0.071 Rh

2) n=1 to n=3

wavenumber = Rh ( 1- 1/9 ) = 0.89 Rh

3) n=3 to n=2

wavenumber = Rh ( 1/4 - 1/9) = 0.139 Rh

4) n=2 to n=1

wavenumber = Rh ( 1- 1/4) = 0.75 Rh

Thus for 2) n=1 to n=3 energy will be maximum


7 0
3 years ago
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1.T

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Burning wood, fireworks, burning coal
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