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lozanna [386]
3 years ago
6

The combination of all frequencies of visible light makes

Chemistry
1 answer:
sashaice [31]3 years ago
3 0

Answer:The visible light contains 7 colours  :  Violet, indigo, Blue, Green, Yellow, Orange and Red.

White colour is formed by the interference of all 7 colours, thus white light has the combination of all frequencies of visible light.

Explanation:

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For the chemical reaction Na 2 CO 3 + Ca ( NO 3 ) 2 ⟶ CaCO 3 + 2 NaNO 3 how many moles of calcium carbonate will be produced fro
sp2606 [1]
Na2CO3 mol = mass/rfm
= 91.9 / ( 23+23+12+16+16+16)
= 91.9/106
=919/1060 or roughly 0.867

Mole ratio of sodium carbonate to calcium carbonate is 1:1

Therefore calcium carbonate mol = mass/rfm

919/1060 = mass / (40+12+16+16+16)
919/1060 = mass / 100
Mass = 919/1060 x 100
= 4595/53 or 86.7g to 3 significant figures
7 0
3 years ago
Plz Help me with this ?
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Answer:

Hey there!

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3 years ago
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Which gas moves the fastest at STP? (Molar Mass: CO2=44, NO2=46, NH3=17, H2S=34)
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3 years ago
Which best describes the relationship between air temperature and high and low pressure air
Vsevolod [243]
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3 years ago
What are the characteristics of a virtual image? Check all that apply.
tia_tia [17]
<h3>Answer:</h3>
  • Can only be seen while looking through a lens
  • May appear larger than the object
  • Appears to come from behind the lens
<h3>Explanation:</h3>

To answer this question we need to ask ourselves;

What is a virtual image?

  • A virtual image is an image that can not be formed on a screen.
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What are the characteristics of a virtual image?

  • A virtual image can only be seen while looking through lenses
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  • It can not be projected onto a screen.
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6 0
3 years ago
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