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prohojiy [21]
3 years ago
15

What region of the atom contains most of the atoms mass?

Chemistry
2 answers:
rusak2 [61]3 years ago
8 0
The correct answer to your question would be nucleus
dimulka [17.4K]3 years ago
7 0

Answer:

Nucleus

Explanation: it is the center of the atom, and contains protons and nuetrons

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• Draw lewis dot structures for an atom of each of following elements:
marin [14]

Answer:

Explanation:

Lewis dot structures represent the symbol of an atom we're looking at and the number of valence electrons it has. This number is represented by the sum of dots around the symbol.

  • Potassium is in group 1A, this means it only has one valence electron, so we draw K with one dot in its Lewis diagram;
  • Argon is in group 8A, this means it has eight valence electrons, so we draw Ar with 8 dots around it in its Lewis diagram;
  • Silicon is in group 4A, this means it has four valence electrons, so we draw Si with 4 dots around it in its Lewis diagram;
  • Arsenic is in group 5A, this means it has five valence electrons, so we draw As with 5 dots around it in its Lewis diagram.

Those are represented in the image attached below:

5 0
3 years ago
Un medicamento corresponde a una disolución de "nafazolina" (sustancia activa) en agua purificada, en una concentración de 12% V
ratelena [41]

Answer:

12 mL

Explanation:

Según la pregunta;

V / V% concentración del fármaco = 12%

volumen de la solución = 100 ml

De;

V / V% = volumen de fármaco / volumen de solución

volumen de fármaco = V / V% × volumen de solución

volumen de fármaco = 12/100 × 100

= 12 mL

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3 years ago
6. An object is in _____________________________ when its distance from a(n) __________________________is changing. 7. Speed in
strojnjashka [21]

<em>Explanation:</em>

<em>Explanation:An object is in motion when its distance from another object is changing. Whether an object is moving or not depends on your point of view. ... A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point.</em>

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3 years ago
The standard cell potential (Eºcell) for the reaction below is +0.63 V. The cell potential
Likurg_2 [28]

Answer:

63.5 w isvthebanswerok is th answer

3 0
2 years ago
Define the clinical thermometer ​
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a small medical thermometer with a short but finely calibrated range, for taking a person's temperature.

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Read 2 more answers
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