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ANEK [815]
3 years ago
15

My teacher laid this much out for us but I don’t know how to get the products in each one.

Chemistry
1 answer:
irakobra [83]3 years ago
3 0

Answer:dang

Explanation:

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The chemical symbols for Oxygen, Nitrogen, Potassium and Gold are:
Over [174]

Answer:

2 . O, Ni, P, G

Explanation:

please I need brainlist

4 0
3 years ago
It is not advisable to wear clothes made of synthetic fiber while working near fire because?
Svetradugi [14.3K]

Answer:

They catch fire very easily.

Explanation:

8 0
3 years ago
What is the percent by mass of oxygen in carbon dioxide (CO2)? Use mc008-1. Jpg. 27. 29% 57. 12% 72. 71% 79. 99%.
castortr0y [4]

The percent by mass of oxygen in carbon dioxide (CO_2) is 72.71%.

<u>Scientific data:</u>

  • Molar mass of oxygen gas = 32 g/mol.
  • Molar mass of carbon = 12 g/mol.

To calculate the percent by mass of oxygen in carbon dioxide (CO_2):

First of all, we would calculate the molar mass of carbon dioxide (CO_2);

CO_2 = 12 +(16\times 2)\\\\CO_2 = 12 +32\\\\CO_2 = 44\;g/mol

For the percent by mass of oxygen:

O_2 = \frac{Mass\; of \;O_2}{Mass\; of \;CO_2} \times 100

Substituting the parameters into the formula, we have;

O_2 = \frac{32}{44} \times 100\\\\O_2 = 0.7271 \times 100

Percent mass of oxygen = 72.71%

Read more on percent mass here: brainly.com/question/15182450

5 0
3 years ago
A teacher divides her class into four groups. She assigns
babunello [35]

Group C : 32.1°C , 31.9°C, 31.8°C makes the most precise measurements of the object's temperature.

Precision :The degree of similarity between study results of the experiment if they were performed today under comparable conditions.

If repeated measurements yield similar results, the measurement is considered precise (or repeated surveys).

It means how closely all the results are related .

Therefore, there should be less difference between the measurements of all the results.

In option (a) , there is a difference of 1° in all the results.

In option (b) , there is a difference of approximately 1.5° in all the results.

In option (c), there is only 0.2° difference in all the results.

In option (d) , there is a difference of 3° in all the results.

Therefore, All the option of group (c) are closely related.

Hence, Group (c) 32.1°C, 31.9°C, 31.8°C makes the most precise

measurements of the object's temperature.

Learn more about Precision & Accuracy here brainly.com/question/5792909

#SPJ1

7 0
2 years ago
Which of the following is a pure substance that cannot be broken down into simpler substances by chemical means?
kifflom [539]

Answer: c

Explanation:

Chemical element, please if you now the answers of my two last questions help me

4 0
3 years ago
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