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vfiekz [6]
3 years ago
15

How can a flame test identify an unknown element?

Chemistry
1 answer:
Ilya [14]3 years ago
6 0

Answer:

the answer for this question is the option D

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Is mass conserved when 40 g of sodium hydroxide undergoes a chemical change during an interaction with 37g of hydrogen chloride?
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Mass is conserverd

Explanation:

Any chemical reaction must follow the law of conservation of mass. Meaning that mass cannot be created nor destroyed. Since all chemical reactions must follow this law, no matter what reaction happens, mass is conserved.

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Which of the following substances can be classified as a salt?
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Sodium Chloride (NaCl) can be classified as a salt

<u>Explanation</u>:

Sodium chloride is an "ionic compound" is known as salt. The ratio in which the  sodium(Na) and chloride(Cl) present in sodium chloride in  NaCl is  1:1. It is found in seawater and is accountable for the salinity of the seawater. Also, NaCl is the extracellular fluid for various multicellular organisms.  

When refined, it becomes in its 'edible' form and is used in food preservatives. Whereas, the large quantity of sodium chloride is used in various industries.  

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