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Travka [436]
3 years ago
6

Please help im really stressed and doing 2 tests at the same time

Chemistry
2 answers:
DanielleElmas [232]3 years ago
7 0
The answer is A, good luck
jok3333 [9.3K]3 years ago
3 0
The answer is A because the minerals needed to make a phone is found underground only. Hope this helps if so mark me the brainiest!!
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Which element forms an ionic bond when combined with Cl
Shtirlitz [24]
Potassium or any other metals.
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3 years ago
How does the density of protostars compare to other stars?
lorasvet [3.4K]

Protostars are less dense than other stars.  

Explanation:

Protostars are very young ‘stars’ made from hydrogen clouds that are beginning to coalesce and collapse under their weight. The hydrogen has not even begun fusing. Therefore, they are mainly made of hydrogen which is the lightest element in the universe.

Stars, however, have begun fusing hydrogen to other heavier elements like helium, carbon, oxygen, and iron. The elements are much heavier than hydrogen making other stars much denser than protostars.

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5 0
3 years ago
you are on spring break and you won a bunch of balloons at a carnival in the mountains of Georgie. You are now driving back to F
scoray [572]
I think they start to deflate bc of gravity.
5 0
3 years ago
What is the total electrons needed for an Octet of SiCL4?
Juli2301 [7.4K]

Answer:4 pairs of electrons

Explanation: SiCl4 is a tetrahedral because it has four pairs of electrons.

4 0
3 years ago
Which contains more molecules: 340g of NH3 or 90g of H2O show your working!!
Shtirlitz [24]

Answer:

atomic mass ( N =14 , H = 1×3 that means 14+3=17

340gram×17gram / mole

=5780mole

atomic mass ( H= 1×2 ,O= 16 =16+2 =18

90gram×18gram /mole

=1620mole

I think 340g ammonia (NH3)

6 0
3 years ago
Read 2 more answers
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