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mash [69]
3 years ago
10

Which statement represents the way a scientist may make a

Chemistry
2 answers:
Karo-lina-s [1.5K]3 years ago
7 0
The answer is A
Hoped it helped!
monitta3 years ago
4 0
A) A scientist makes a prediction, makes an observation, n then asks a scientific question
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It's a chemical change because it's changing the object's property. 
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Due to the lower pressure on top of Mt. Everest, water can
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C. 343K
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Which pairing below does not correctly match the scientist with the contribution to the understanding of the atom? A. Proust and
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An iron atom has an atomic mass of 56. Its
Ghella [55]

Answer:

Iron has 30 neutrons.

A neutral iron atom contains 26 protons, 30 neutrons, plus 26 different shells around the nucleus.

Explanation:

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7 0
3 years ago
212 pb 82 is the isotope notation for iron. what is the atomic number, mass number, and number of both protons and neutrons?
o-na [289]

Hello!

The mass number in isotope notation is denoted A, the atomic number is denoted as Z, and the element is denoted as X.

In the given isotope, the mass of the isotope is 212 amu, and the atomic number is 82.

We know that the number of electrons, and protons are equal to the atomic number. Therefore, there are 82 protons. Also, to find the number of neutrons, we subtract the atomic number from the atomic mass.

212 - 82 = 130 neutrons

<u>Final answers</u>:  

  1. Atomic Number: 82
  2. Mass number: 212
  3. Number of Protons: 82
  4. Number of Neutrons: 130
5 0
3 years ago
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