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prisoha [69]
3 years ago
6

A system of knowledge based on facts and principles

Chemistry
1 answer:
Ymorist [56]3 years ago
8 0
I’m pretty sure the answer you’re looking for is science...but I’m not quite sure because your question is kinda vague
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the red line observed in the line spectrum for hydrogen has 3.03x10^-19J, what is the wavelength, in nm, of this?
djverab [1.8K]

Answer:

λ = 6.5604 x 1016 nm

Explanation:

Given Data:

The energy of the red line in Hydrogen Spectra = 3.03 x 10-19

Formula to calculate Wave length

E= hv

Where E is Energy

h is Planks Constant = 6.626 x 10–34 J s

v is frequency

In turn

v= c/ λ

where c is speed of light = 3.00 x 108 m s–1

λ is wavelength = to find

Solution:

Formula to be Used:

E= hv………………………… (1)

Putting the value v in equation 1

               E= h c/ λ…………………… (2)

Put the value in equation 2

3.03 x 10-19 J  = (6.626 x 10–34 J s) x (3.00 x 108 m s–1) / λ ……………………….(3)

By rearranging equation 3

λ = (6.626 x 10–34 J s) x (3.00 x 108 m s–1) /3.03 x 10-19  J

λ = 6.5604 x 107 m

The answer is in “m”

So we have to convert it into nm

So for this to convert “m” to “nm” multiply the answer with 109

λ = 6.5604 x 107 x 109

λ = 6.5604 x 1016 nm

6 0
4 years ago
When an ionic compound dissolves in water:
Airida [17]

Answer:

d. each of the above (A, B, and C) occurs.

Explanation:

When an ionic species dissolves in water , the ionic compound dissociates into cation and anion , and the cation interacts with the negative end of the water molecules , and the anion interacts with the positive end of the water molecule .

During the process of dissolution , the interaction between , solvent - solute overcome the interaction between solute - solute molecules .

Hence , From the question , all the statement given are correct .

8 0
3 years ago
Suppose that the expected value of a measurement is 17 N.
Sunny_sXe [5.5K]
C ahaha siwvushss sjdjshsgau avians
6 0
3 years ago
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Object A has a mass of 500g and object B has a mass of 300g. Which object is more dense?
KonstantinChe [14]

Answer:

500g because 300g is less dense than 500g its kinda like a weight

Explanation:

i

4 0
3 years ago
The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and
aev [14]

The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

<h3>What are micro organism?</h3>

Micro Organism are organism that can be seen with a microscope.

Microorganisms include bacteria, protozoa, algae, and fungi.

Micro organisms exist in its single-celled form or as a colony of cells.

The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

learn more on micro organism here: brainly.com/question/18051752

#SPJ12

3 0
2 years ago
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