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ladessa [460]
3 years ago
15

Oceń prawdziwość podanych informacji w układzie okresowym pierwiastki chemiczne są złożone według NIK to jących się liczbą atomo

wych Z Jądro atomowe jest bardzo mały i leży

Chemistry
1 answer:
cluponka [151]3 years ago
3 0
Wow. What language is this?
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Vsevolod [243]
After the first 2 min the 20 g  are only 10g,  (1 half-life)
after other 2 more min 5g (2 half-lives)
after other 2 more min 2.5 g (3 half-lives)
after 2 more 1.25 g (4 haf lifes)



7 0
3 years ago
Which of the following liquids or solutions, at the same concentration, will have the lowest freezing point and why?
jok3333 [9.3K]

Answer:idk

Explanation:Idk

6 0
2 years ago
Help I really help on this
nikdorinn [45]
I think it’s C but not certainly positive
8 0
2 years ago
How much energy is required to vaporize 14.27 grams of water at its<br> boiling point? *
laila [671]

Energy required to vaporize : 32.3 kJ

<h3>Further explanation </h3>

The heat to change the phase can be formulated :

Q = mLf (melting/freezing)

Q = mLv (vaporization/condensation)

Lf=latent heat of fusion

Lv=latent heat of vaporization

Mass of water = 14.27 g

Latent heat of vaporization ( boiling point of 100 ºC) :  2260 J/g

Energy required :

\tt Q=m.Lv\\\\Q=14.27\times 2260\\\\Q=32250.2~J\approx 32.3~kJ

6 0
2 years ago
The diagram shows light interacting with an object. Which object is the light most likely striking?
Tamiku [17]

a window

Explanation:

The diagram attached that shows light interacting with an object shows that the object is most definitely a window.

The window must have been made up of glass.

  • The wave path completely describes refraction of waves as they cross the boundary between two medium.
  • The light moves from a less dense to a denser medium and this causes the velocity to slow down.
  • On coming from the other side, the wave rays are attenuated.

learn more:

Refraction brainly.com/question/12370040

Reflection and diffraction brainly.com/question/3183125

#learnwithBrainly

6 0
3 years ago
Read 2 more answers
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