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sweet-ann [11.9K]

3 years ago

9

Homogeneous appears blank while a heterogeneous blank mixture

2 answers:

Grace [21]3 years ago

6 0

Answer:

homogeneous mixture means the mixture that we can't see with our naked eyes and hetergenous mixture means the particle which can't be seen with our naked eyes.

Tom [10]3 years ago

3 0

Answer:

huh he juju JMSDF jiff blues chit book guy and I can be a bit more than that is a few weeks

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The means of X ? ⊙_⊙⊙_⊙⊙_⊙

julsineya [31]

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x means unknown it is an unknown value.

For example if you have 2 x you have 2 u know values.

Explanation:

If you want us to explain it further please provide a picture.

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A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe

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the air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

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3 years ago

How many moles are in 5.025 grams of NaOH?

yKpoI14uk [10]

Answer:

The SI base unit for amount of substance is the mole. 1 grams NaOH is equal to 0.025001806380511 mole.

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3 years ago

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The coiling of the protein chain backbone into an alpha helix (like a spring) is referred to as the ________.

Agata [3.3K]

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4 years ago

Use the Rydberg equation to calculate the wavelength (in Å) of the photon absorbed when a hydrogen atom undergoes a transition f

ivolga24 [154]

Answer:

1024Å

Explanation:

The Rydberg equation is an empirical relationship equation expressed by Balmer and Rydberg which is given as:

1/λ = $R_{H} (\frac{1}{n_{f} ^{2} }-\frac{1}{n_{i} ^{2} } )$ .............................(1)

where $R_{H}$ is the Rydberg constant given as $1.09 x 10^{7}m^{-1}$ , n is the transition level and the subscript f and i show the final and initial level numbers respectively. λ is the wavelength.

$n_{f}$ = 1

$n_{i} = 3$

Using equation (1), we have

1/λ $= 1.097 x 10^{7}(\frac{1}{3^{2} }- \frac{1}{1^{2} })$

= $1.097 x 10^{7} (\frac{1}{9} -\frac{1}{1} )$

= $1.097 x 10^{7}(0.11-1)$

= $1.097 x 10^{7} (-0.89)$

= - 9763300

λ = $-\frac{1}{9763300}$

= $-1.024x 10^{-7}m$

We should note that the negative sign we have is as a result of photon absorption whereby the hydrogen atom gains energy to undergo a transition from the lower energy level to a higher one. Wavelength does not have a negative value.

To convert to Å, we have

λ = $\frac{1.024 x 10^{-7} }{10^{-10} }$ = 1024Å

Therefore the wavelength of the photon in Å is 1024Å

7 0

3 years ago