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2 years ago

Why is it significant that the color emitted from the hydrogen emission spectrum is not white?

Chemistry

1 answer:

just olya [345]2 years ago

8 0

The color emitted from a hydrogen spectrum is not white because only colors with certain energy levels can be observed.

Explanation:

White light is generally a combination of seven colors having different wavelengths from the range of 400nm to 700nm, with violet having the wavelength of 700nm and red having 400nm. This shows that white light cannot be given a separate wavelength.

During the hydrogen emission spectrum, the colors with higher wavelengths are observed in the emission and thus there is no white light.

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Suppose you have a sample of table salt (NaCl) that has a mass of 100.0 grams. If

IgorC [24]

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<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

<h3>Molarity of NaCl</h3>

In this case, you have:

number of moles of NaCl= $100 grams\frac{1 mole}{58.45 grams} =$ 1.71 moles (being 58.45 g/mole the molar mass of NaCl)
volume 2 L

Replacing in the definition of molarity:

$Molarity=\frac{1.71 moles}{2 L}$

Solving:

Molarity= 0.855 $\frac{moles}{liter}$

Finally, the concentration of the solution is 0.855 $\frac{moles}{liter}$ .

Learn more about molarity:

<u>brainly.com/question/9324116</u>

<u>brainly.com/question/10608366</u>

<u>brainly.com/question/7429224</u>

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