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BabaBlast [244]
3 years ago
8

What is the concept of galactic recycling?

Chemistry
1 answer:
frozen [14]3 years ago
5 0
Galactic recycling is a natural phenomenon in which the stars expel some gas into the space so that it would mix with the interstellar medium. As a result, this would produce new younger stars. So, basically, the concept done here is the mass and energy conservation. In order to create new species, the energy must come from another source.
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How many grams of oxygen, O 2 , is consumed when 41.9 g of propane, C 3 H 8 , burns?
LenaWriter [7]

Answer:

152.4 g of O₂ are consumed.

Explanation:

We start from the combustion reaction:

C₃H₈  +  5O₂  →  3CO₂  +  4H₂O

We convert the mass of propane to moles:

41.9 g . 1mol /44g = 0.952 moles

Ratio is 1:5. 1 mol of propane consumes 5 moles of oxygen at propane combustion

Then, 0.952 moles may consume (0.952 . 5) /1 = 4.76 moles.

We convert moles to mass → 4.76 mol . 32g/mol = 152.4 g

8 0
2 years ago
What are the properties of the aluminum in the can ?
GrogVix [38]

Aluminum is very rare in its free form. Aluminum contribute greatly to the properties of soil, where it is present mainly as insoluble aluminum hydroxide. Aluminum is a reactive metal and it is hard to extract it from its ore, aluminum oxide (Al2O3).


mark brainliest   :)

8 0
3 years ago
If chemical weathering occurs when minerals inside of the rock changes chemically. Will it change the rate of chemical weatherin
Mariulka [41]
Increase of rainfall will accelerate chemical weathering. Especially if the runoff is slightly acidic.
7 0
2 years ago
In a reaction to make ethyl acetate, 25.5 g CH3COOH react with 11.5 g C2H5OH to give a yield of 17.6 g CH3COOC2H5-
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4 0
2 years ago
Which characteristic of the elements increases as you move across a period from left to right?
topjm [15]

Answer:

Valence electrons

Explanation:

In a period, the number of valence electrons increases (mostly for light metal/elements) as we move from left to right side

6 0
2 years ago
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