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olga55 [171]
3 years ago
15

Identify the mass law that each observation demonstrates. a flashbulb contains magnesium and oxygen before use and magnesium oxi

de afterward, but its mass does not change.
Chemistry
1 answer:
Alla [95]3 years ago
4 0
The mass law is LAW OF CONSERVATION OF MASS.
The law of conservation of mass states that mass, in an isolated system is neither created nor destroy by chemical reaction or physical transformations. 
This implies that, the mass of the chemicals before the reaction will be equal to the mass of the product after the reaction.
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Describe what the greenhouse effect is and how it is caused on a molecular level.
Leokris [45]

Answer:

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There are several different types of greenhouse gases. The major ones are carbon dioxide, water vapor, methane, and nitrous oxide. These gas molecules all are made of three or more atoms. The atoms are held together loosely enough that they vibrate when they absorb heat. Eventually, the vibrating molecules release the radiation, which will likely be absorbed by another greenhouse gas molecule. This process keeps heat near the Earth’s surface. Most of the gas in the atmosphere is nitrogen and oxygen, which cannot absorb heat and contribute to the greenhouse effect.

Explanation:

5 0
2 years ago
Which of the following statements is not a description of asteroids?
seraphim [82]

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Explanation:

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6 0
3 years ago
Read 2 more answers
A saline solution with a mass of 400 g has 30 g of NaCl dissolved in it. What is the mass/mass percent concentration of the solu
maria [59]
(g solute/g solution)*100 = % mass/mass

30 g / 400 * 100 

0,075 * 100

= 7,5% w/w

hope this helps!

3 0
3 years ago
When you mix copper sulphate solution and steel wool, what is the chemical property that can be observed.
bazaltina [42]

Answer:

Explanation:

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