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Aliun [14]
3 years ago
7

Number 3 ...................​

Chemistry
1 answer:
Crank3 years ago
4 0
It’s B



Silicon is used for electronic devices because it is an element with very special properties. One of it's most important properties is that it is a semiconductor.




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Please help !!!
stiv31 [10]

Answer:

2KClO3 》》2KCl +3O2

C+ O2》》CO2

number of C moles

Required O2 moles (According to the mole ratio )

Relevant to the first equation, find the moles the KClO3, which is used to produce that amount of O2 moles

Now you can find the mass of KClO3

I mentioned the useful steps which can guide you to get the answer.

Explanation:

5 0
3 years ago
Which of the elements Magnesium, Calcium, Serum, Barium, looses electron readily​
anzhelika [568]

Answer:

mg. ca . ba. loses very easily

Explanation:

ok

6 0
3 years ago
One carbon dioxide molecule consists of ______________ carbon atoms and ____________ oxygen atoms
Eddi Din [679]

Answer:

1 carbon 2 oxygen

Explanation:

6 0
3 years ago
What occurs when the vapor pressure of a lquid is equal to the external atmospheric pressure
AlekseyPX

Answer:

The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid.

Explanation:

Boiling is a physical change and molecules are not chemically altered during the process.

8 0
3 years ago
On the pH scale, which value represents an acid?<br> A. 2<br> B. 8<br> C. 12
Zielflug [23.3K]
A) 2 is the correct answer
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