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Alex Ar [27]
2 years ago
14

I NEED HELP PLEASE HELP ME I'LL GIVE BRAINLIEST IT HAS TO BE RIGHT OR IMMA FAIL PLEASEEEEE

Chemistry
2 answers:
PolarNik [594]2 years ago
5 0

Answer:

I dont know your question

Explanation:

can you tell me more about your question then I could help!

algol [13]2 years ago
5 0
C is wavelength
3 waves/second is frequency
The line in the middle of the wave is amplitude
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Use the concept of natural selection to explain why organisms typically adapt over time.
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Organisms is an environment or habitat for species
6 0
3 years ago
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a student determined that it requires 106220 j of energy to vaporize 47g of water. is the student is right​
shusha [124]
<h2>Answer:</h2>

He is right that the energy of vaporization of 47 g of water s 106222 j.

<h3>Explanation:</h3>

Enthalpy of vaporization or heat of vaporization is the amount of energy which is used to transform one mole of liquid into gas.

In case of water it is 40.65 KJ/mol. And 18 g of water is equal to one mole.

It means for vaporizing 18 g, 40.65 kJ energy is needed.

So for energy 47 g of water = 47/18 * 40.65 = 106.1 KJ

Hence the student is right about the energy of vaporization of 47 g of water.

7 0
3 years ago
What is the electronegativity difference for a bond between potassium and iodine? A. 3.3 B. 4.6 C. 0.4 D. 1.7
user100 [1]
Iodine has an electronegativity of 2.5, and potassium has an electronegativity of 0.8, so the difference is:
2.5 - 0.8 = 1.7
7 0
3 years ago
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WHATS THE DIFFERENCE BETWEEN Fe AND FE2+
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Answer:

Fe is just the shortened version of Iron whereas Fe2+ is a positive ion,cation to be more specific

4 0
3 years ago
What are the period and group trends in electronegativities
Leviafan [203]

Electronegativity of an element decreases as we move down a group on the periodic table and electronegativity increases while moving from left to right across a period on the periodic table.

Explanation:

  • The electronegativity increases as we move from left to right across a period because from left to right across a period, the nuclear charge is increasing Hence the attraction for the valence electrons also increases.
  • As we move down a group, the atoms of each element have an increasing number of energy levels. The distance between the nucleus and valence electron shell increases and reduces the attraction for valence electrons. Hence electronegativity decreases as we move from top to bottom down a group.
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3 years ago
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