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Biblioteka

10-01 Open Note Quiz

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Posljednje ažuriranje almost 4 years ago
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Pitanje 1
1.
Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

rusting

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chemical change

fermenting

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physical change

dissolving koolaid

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physical change

grating cheese

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chemical change

Pitanje 2
2.

How many protons does Sulfur have?

Pitanje 3
3.

How many neutrons does Yttrium have?

Pitanje 4
4.

How many electrons does Mg+2 have?

Pitanje 5
5.

Silicon has three isotopes. Si-28 which occurs in 92.23% of the sample, Si-29 which occurs in 4.67% of the sample and the remainder is Si-30 with 3.10% of the sample. Calculate the average atomic mass of the sample.

Pitanje 6
6.

Calculate the average atomic mass for the following data:

Pitanje 7
7.

What is the value of A?

Pitanje 8
8.

What is the value of B?

Pitanje 9
9.

What is C?

Pitanje 10
10.

What kind of decay is this?

Pitanje 11
11.

What is the value of 255?

Pitanje 12
12.

What is the value of 103?

Pitanje 13
13.

What is C?

Pitanje 14
14.

What kind of decay is represented?

Pitanje 15
15.

Match each particle with its name

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

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gamma

γ

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alpha

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beta

Pitanje 16
16.

The half-life of Zn-71 is 2.40 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.20 minutes has elapsed?