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Dvinal [7]
2 years ago
9

Can someone help me?

Chemistry
1 answer:
Ber [7]2 years ago
6 0

Answer:

tere maa rand gaand mai lauda

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Describe how protons determine an element's identity .
tankabanditka [31]

Every element has different amount of protons and the atomic number is how much protons there are.

5 0
3 years ago
The element oxygen, represented by the symbol O, is classified as
Katarina [22]
Oxygen<span> is a </span>chemical element<span> having a symbol </span>O<span> and having an </span>atomic number<span> 8.
Oxygen is a pure substance , and it is not a mixture or solution, Niether it is a compound ... Instead , it forms chemical compounds by reacting with other elements.
So , according to above explanation ,
A. A pure substance , is the correct answer.</span>
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Slav-nsk [51]

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3 years ago
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How many moles are there in 1.20 x 1025 particles of helium?
Anettt [7]

Answer:

You would get 19.969 moles.

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You would get 19.969 moles.

3 0
2 years ago
Why do you think it is important to use the same blanace throughout the entire experiment?
Zepler [3.9K]

It is important to use the same balance throughout the entire experiment since the calibration of each balance is not the same and changing balances could result in a systematic error.

There are three types of errors that could affect the results of the experiment. The effect of random or indeterminate errors is hard to predict, its effect on the results of the experiment could be different every time. The second type of error is the systematic or determinate error, which causes a shift in results in a specific direction. The last type of error in an experiment is human error.

The type of error that could be related to the use of different balances throughout the experiment is the systematic error. Instruments could be a source of error especially if they are poorly calibrated. Also, analytical balances are calibrated differently which may result in inaccuracy in the weighing of chemicals.

To learn more, please refer to brainly.com/question/11541675.

#SPJ4

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