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mamaluj [8]
3 years ago
10

This is a characteristic of the elements in the periodic table that shows a pattern. It may increase or decrease across or down

the table.
Chemistry
2 answers:
vaieri [72.5K]3 years ago
7 0
Atomic mass units or AMU
Komok [63]3 years ago
6 0

Answer:

The correct answer is Periodic Trend.

Explanation:

Periodic Trends: Certain properties of the elements exhibit a gradual change as we move through a period or family, generating a kind of pattern related to the chemical properties of the elements.

These are atomic radio, ionization potential, electron affinity, and electronegativity.

Have a nice day!

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If the length of a string increases 2 times but the mass of the string remains constant, the new density of the string will equa
Genrish500 [490]

If the length of a string increases 2 times but the mass of the string remains constant, the original density  will be multiplied by a factor  mathematically given as

v=1.414 times

<h3>Will the new density of the string equal the original density multiplied by what factor?</h3>

Generally, the equation for the  volume is mathematically given as

v = sqt(TL/m)

Where

density = mass/length

Therefore

v2/v1 = \sqrt{L2/L1}

v2/v1 = \sqrt{2}

In conclusion,v ratio will give us

v=1.414 times

Read more about volume

brainly.com/question/1578538

8 0
2 years ago
How many moles of HCl are needed to completely react with 50.0 mL of 0.250 M NaOH solution? Group of answer choices 1.25 × 10-2
Hitman42 [59]

Answer:

n_{HCl|=1.25\times 10^{-2}\ moles

Explanation:

We know that , the reaction between NaOH and HCl is given as

HCL+NaOH\rightarrow NaCl+H_2O

Form the above reaction we can say that

Number of moles of HCl =Number of moles of NaOH

n_{HCl} =n_{NaOH}

Therefore

n_{HCl}=\frac{0.25\times 50}{1000}\ moles

n_{HCl|=12.5\times 10^{-3}\ moles

n_{HCl|=1.25\times 10^{-2}\ moles

Therefore the numbers of moles needed of HCl wil be 1.25\times 10^{-2}\ moles

6 0
3 years ago
The work of which scientist was most essential to the use of the scientific
PilotLPTM [1.2K]

Answer:

Antoine Lavoisier.

Explanation:

I would say that it's the 18th century French chemist Lavoisier. He can arguably be called the father of modern chemistry. He proved the law of the conservation of mass and had a large part in developing the scientific method.

7 0
3 years ago
According to the following electron structure, how many valence electrons do these fluorine atoms have? F= 1s12s22p5
ddd [48]
The highest sequence for this shell is the number 2, preceding both the s and p in the diagram. This means that the outermost shell is the second level shell. In this shell, there are 7 electrons, 2 in the 2s orbital and 5 in the 2p orbital.

As a side note (not sure if this is a typo), the electron structure for fluorine begins with a 1s2, not a 1s1.
6 0
3 years ago
Read 2 more answers
What is a compound?<br>​
Oksanka [162]

Answer:

NOUN

a thing that is composed of two or more separate elements; a mixture

Explanation:

basically a mixture

4 0
3 years ago
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