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Serhud [2]
3 years ago
6

When doing lab experiment you must always ,to prevent lab accient s?

Chemistry
1 answer:
ki77a [65]3 years ago
5 0
You must always wear goggles.
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mote1985 [20]
This is a characteristic of a Thermosetting polymer.
7 0
4 years ago
What is the shortest wavelength in the Balmer series
MissTica
The largest energy release will take place when the electron jumps between the greatest number of levels. In this case from infinity down to 2 

This is the emitted photon with the most energy ( in the Balmer series), the highest frequency and therefore the shortest wavelength. 

Balmer's original formula was 

Wavelength = 3645.6 . 10^–10 ( n^2 / (n^2 – 4) ) 

When n => infinity 

Wavelength = 3.6456 . 10^–7 m ( or 364.5 nm)
7 0
3 years ago
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Which of the following is an interaction is responsible for the force of attraction between the particles in a salt crystal?
mojhsa [17]
Answer: option B) proton-electron.

The particles inside a salt crystal are ions. The electrostatic attraction between the positive ions are the negative ions is responsible for the crystal structure. In last stay, the protons are responsible for the positive charge and the electrons for the negative charge. Then you can say that the interaction proton-electron is responsible for the force of attraction between the particles in a salt crystal.


7 0
4 years ago
I HAVE 5 minutes HELP!!
-BARSIC- [3]

Answer:

endoplasmic reticulum

Explanation:

Endoplasmic reticulum will complete the chart. The Endoplasmic reticulum is one type of organelle that is present in eukaryotic cells. They form a network that is interconnected with membrane-enclosed sacs or structures that are tube shaped and are called cisternae.

6 0
3 years ago
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9. Write the number in place value table of 820245<br>​
Burka [1]

Answer:

8----hundred thousands

2----ten thousands

0----thousands

2----hundreds

4----tens

5---ones

place value

 8 = 800,000

 2 = 20,000

 0 = 0,000

2 = 200

4 =40

5 =5

5 0
3 years ago
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