How does silicon shape our technological reality?

1 answer:

4 0

Silicon is the most common element used in electronic devices. They are commonly termed as silicon wafers when incorporated into these electronics. Its beneficial property for this use is being a semi-conductor. It can be combined with other conductors through a process called doping, to make it ideal for making transistors that could amplify electric signals.

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How many moles are in 153 grams of O2?

Tatiana [17]

Answer:

4.78 mol O2

Explanation:

Grams --> moles

Grams/molar mass = moles

153 g O2 / 32 g/mol O2 = 4.78125 (significant figures so round it up; the grams has 3 significant figures, so round it up) 4.78 mol O2

8 0

3 years ago

Temperature (°C)

Andreyy89

The answer is the solution saturated than more dissolved with is C

5 0

2 years ago

Why is earth likely unique in it volume of liquide water

Karolina [17]

It is unique because we can drink from it .

4 0

2 years ago

explain using diagrams how potassium forms the compound potassium flouride when it reacts with flourine

Katarina [22]

Answer:

The answer to your question is given below.

Explanation:

Potassium (K) has 19 electrons with electronic configuration of 2, 8, 8, 1.

Fluorine (F) has 9 electrons with electronic configuration of 2, 7.

Fluorine needs 1 electron to complete it's octet configuration.

Hence, potassium (K), will lose 1 electron to fluorine (F) to form potassium ion (K+) with electronic configuration of 2, 8, 8. The fluorine atom (F) will receive the 1 electron from potassium to form the fluoride ion (F-) with electronic configuration of 2, 8.

**** Please see attached photo for further details.

7 0

2 years ago

A chemist weighed out 20.7 g of sodium . Calculate the number of moles of sodium she weighed out

Pachacha [2.7K]

Answer:

about 0.9 mol

Explanation:

there are 22.990 g/mol of Na

20.7/22.99 = 0.900391 mol

about 0.9 mol

8 0

3 years ago