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ra1l [238]
2 years ago
13

(20 POINTS) HELP... If you add an unknown liquid to a solution that has a pH of 5, and the pH of the new mixture goes down to 3,

then the unknown liquid was a(n) _______.
a.not enough information to tell


b.base


c.neutralizer


d.acid
Chemistry
1 answer:
olasank [31]2 years ago
7 0

Answer:

D

Explanation:

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1- The correct answer is C :


the elements arranged in the modern periodic table by increasing atomic number.


The explanation:


-The elements in the periodic table are arranged to increase the atomic number. All of these elements display several other trends and we can use the periodic law and table formation to predict their chemical, physical, and atomic properties.


2- The correct answer is C:


strontium, magnesium, calcium, beryllium are the elements which have similar properties.


The explanation:

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Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties .

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4- The correct answer is D


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Mendeleev didn't include helium, neon, and argon in his periodic table because these elements had not yet been discovered.


5- The correct answer is B:


The periodic law describes trends seen across periods within the periodic table.


The explanation:


When the chemical elements are arranged, there is a pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties


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3 years ago
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Answer:

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Explanation:

Hello there!

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