3 years ago

Does SiO2 also equal Si2O4? (silicon atom 1 oxygen atom 2 = silicon atom 2 oxygen atom 4?)

Chemistry

1 answer:

Norma-Jean [14]3 years ago

8 0

Answer:

Explanation:

that is the anwer of the question

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What is an example of inert elements

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How many numbers between 1-100 are equal to five times an odd number?

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Answer:

There are 10 numbers between 1-100 which are equal to 5 times an odd number.

Explanation:

The odd numbers between 1 and 100 are 1,3,5,7….. 

When these when these odd numbers are multiplied by 5 we get the following result.

$5 \times 1=5$

$5 \times 3=15$

$5 \times 19=95$

These products form an AP 5,15,25,…..,95 

common difference d=10

first term $a=5$

last term $a_n=95$

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The expression for last term $a_n$ of an AP is

 $a_n=a+(n-1)d$ 

 $a_n=a+nd-d$ 

 $nd=a_n-a+d =95-5+10=100$ 

 $n= \frac{100}{d}= \frac{100}{10}=10$ 

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3 years ago

Most atoms are stable when they have _____ electrons in their outer shell

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Valence electrons in their outer shell

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