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alexgriva [62]
3 years ago
8

Define a scientific "Relationship" in your own words​

Chemistry
1 answer:
Ivahew [28]3 years ago
3 0

Answer:

A relationship is a person and their partner commited to each other romantically.

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One of the emission lines that provides the green color in fireworks, which com s from barium salts, has a wavelength of 505nm.
PSYCHO15rus [73]

Explanation:

(a)

The relation between frequency and wavelength is shown below as:

c=frequency\times Wavelength


c is the speed of light having value 3\times 10^8\ m/s

Given, Wavelength = 505 nm

Also, 1 m = 10^{-9} nm

So,  

Wavelength = 505\times 10^{-9} m

Thus, Frequency is:

Frequency=\frac{c}{Wavelength}

Frequency=\frac{3\times 10^8}{505\times 10^{-9}}\ Hz

Frequency=5.94\times 10^{14}\ Hz

(b)

Also, E=\frac {h\times c}{\lambda}

Where,  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

c is the speed of light having value 3\times 10^8\ m/s

So,

E=\frac{6.626\times 10^{-34}\times 3\times 10^8}{505\times 10^{-9}}\ J

E=\frac{10^{-26}\times \:19.878}{10^{-9}\times \:505}\ J

E=3.94\times 10^{-19}\ J

(c)

Electromagnetic spectrum is range of the frequencies and their respective wavelengths of the various type of the electromagnetic radiation.

In order of the increasing frequency and the photon energy and the decreasing wavelength the spectrum are:  

Red , Orange, Yellow, Green, Blue, Indigo, Violet

Increasing wavelength is the opposite trend. Thus, The longest visible wavelength is red and the shortest is violet.

6 0
3 years ago
PLS HELP 6TH GRADE ITS ONE QUESTION ABOUT SCIENCE
julia-pushkina [17]

Answer: The answer is C

Explanation:

5 0
3 years ago
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What is the chemical reaction of aluminum and ferric oxide to produce iron and aluminum oxide?
AnnZ [28]

Answer:

Ferric oxide reacts with aluminium to produce aluminium oxide and iron. The balanced chemical equation for the given reaction is : Fe2O3 + 2Al → Al2O3 + 2Fe.

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2 years ago
Select the missing words to complete the definition of buffer capacity. Buffer capacity is the _____________ of acid or base a b
horsena [70]

Answer:

amount, pH value.

Explanation:

The buffer range is the pH range in which the buffer performs optimally, i.e., neutralizes even when a strong acid or base is introduced to it and resists any major change in its pH value.

The buffer capacity is the amount of acid or base that can be added before the pH of the buffer solution changes significantly.

Thus, the final statement becomes,

Buffer capacity is the amount of acid or base a buffer can handle before pushing the pH value outside of the buffer range.

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2 years ago
Protons, neutrons, and electrons.
natima [27]
What are you asking?

8 0
3 years ago
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