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alina1380 [7]
3 years ago
7

Can someone plz help me with this one problem!!!

Chemistry
2 answers:
Nostrana [21]3 years ago
5 0

Answer:

I am not sure but I think its sunlight

Maslowich3 years ago
3 0

Answer:

Sunlight is a mechanical energy

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This map shows the ages of the Atlantic oceanic crust
tamaranim1 [39]
No
Of course not cause it will only locate where the ocean is , it will not show the age.
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3 years ago
Element c has a strong emmission aound 450nm Does this emmission line reprosent a lower of higher emergy line at 627 nm?
Julli [10]

It  respresents the higher energy level than 627nm .

<h3>What is a emission line ? </h3>

Emission lines are the glowing hot gas emits lines of light whereas absorption line  refers to the tendency of  cool atmospheric gas to absorb the same line of light.Some lights produce dark band when the light passes through gas in the atmosphere . There are two line spectrum  and absorption.

 spectrum is an excitement of  electrons from lower to higher energy levels and when it comes back it releases energy in the terms of colourful lights .

It represents the  higher energy levels than 627nm because Energy is inversly proportional to wavelength .

to learn more about Emission lines click here

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5 0
2 years ago
A wooden block has a volume of 25.3 cm3. Its mass is 17.0g. What is the density of this block?
kolbaska11 [484]
Density = (mass) / (volume)

Density = (17.0 g) / (25.3 cm³) = 0.672 gm per cm³. (rounded)
6 0
3 years ago
6. Think of some other chemical reactions. List them and the type of reaction: exothermic or endothermic. Example: Burning coal
Oksanka [162]

Remember: energy is conserved in a chemical reaction (visualize the reaction and question whether heat lies on reactant side (left) or product side (right))

-exothermic- heat is released (heat is on the product side)

>forming an ionic lattice (SALT)- mixture of Na and Cl results in a more stable ionic lattice, causing this reaction to be exothermic

>burning wood

-endothermic- heat is absorbed (heat is on the reactant side)

> cooking an egg

7 0
3 years ago
There are 70 fisherman and 5 sea bass in the lake. Are sea bass considered a limiting factor?
Olin [163]

Answer:

yes

Explanation:

8 0
2 years ago
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