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aniked [119]
3 years ago
8

What transition energy corresponds to an absorption line at 527 nm?​

Chemistry
2 answers:
Ede4ka [16]3 years ago
4 0

Answer:

E = 3.77×10⁻¹⁹ J

Explanation:

Given data:

Wavelength of absorption line = 527 nm (527×10⁻⁹m)

Energy of absorption line = ?

Solution:

Formula:

E = hc/λ

h = planck's constant = 6.63×10⁻³⁴ Js

c = speed of wave = 3×10⁸ m/s

by putting values,

E = 6.63×10⁻³⁴ Js ×  3×10⁸ m/s / 527×10⁻⁹m

E = 19.89×10⁻²⁶ Jm /527×10⁻⁹m

E = 0.0377×10⁻¹⁷ J

E = 3.77×10⁻¹⁹ J

irina [24]3 years ago
3 0

Answer:

D

Explanation:

a p e x

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Could someone help me with this? Pleassseee
Sonja [21]

75 x 3 = ______


Well if you take 75 plus 75 you get 150 Fish ,Then you add 75 more so 150  plus 75 equals 225      So there are 225 fish in display at the entrance.

hope this helps please mark brainliest !!!!!!!!!!!!

8 0
3 years ago
A bicycle completed the first 400.0 m of a ride in 86.8 s. What was the bicycle's average speed in kilometers per hour?
konstantin123 [22]

Answer:

16.6 km/h  

Step-by-step explanation:

Speed = distance/time

           = 400.0 m/86.8 s

           = 4.608 m/s               Convert kilometres to metres

Speed = 4.608m/s × (1 km/1000 m)

           = 0.004 608 km/s     Convert seconds to hours

Speed = 0.004 608 km/s × (3600 s/1 h)

           = 16.6 km/h

3 0
3 years ago
A compound contains 70.0 or iron and 30.1 oxygen what is its empirical formula
Ratling [72]

Answer:

The empirical formula would be Fe2o3

Explanation:

you first take the grams or the percent of each element, then transform them from grams to moles.

After getting the number of mols you want to divide each mol by the lowest number of mol.

EX) for this problem the number of moles of Fe(iron) would be 1.253 mol and the moles for the oxygen would be 1.881 mol... so you take the lowest, 1.253, and divide both to get what's called a mol fraction.

1.253/ 1.253 =1Fe

1.881/ 1.253= 1.5

now we want a whole number since we're finding the formula of a compound... and since there is a 1.5 you would multiple that by 2 giving you 3 for oxygen and giving you 2 for iron.

then these whole numbers will give you the subscripts that's needed for your empirical formula :)

- Hope this helps!!!

8 0
4 years ago
Which of these measurements could be the pressure of a gas?
12345 [234]

Answer:

725 mmHg

Explanation:

1 mmHg = 133,32 Pa

mmHg and Pa are both units of measurement of pressure.

3 0
4 years ago
What transfers the electrons generated during the light cycle to co2 during the calvin cycle?
natta225 [31]

Answer:

The correct answer is NADPH.

Explanation:

It takes 6 molecules of CO2 to generate one molecule of glucose. Each of the CO2 molecules is attached to a RuBP-acceptor molecule, which is then divided into two 3-phosphoglycerate molecules.

The ATP produced during the light reactions of photosynthesis yields phosphate groups to these molecules, resulting in 1,3-diphosphoglycerate. Simultaneously, NADPH yields electrons to these three-carbon molecules, creating glyceraldehyde-3-phosphate molecules. Glyceraldehyde-3-phosphate is used to make the sugar from 6 glucose carbons. Another part of the glyceraldehyde-3-phosphate is used together with an ATP molecule, to generate the CO2 acceptor ribulose-1,5-bisphosphate and start the cycle again.

Have a nice day!

6 0
4 years ago
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