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Anon25 [30]
2 years ago
10

Akira records the speed of a reaction, first without a catalyst, and then with a catalyst

Chemistry
2 answers:
xxTIMURxx [149]2 years ago
6 0
<h2>Answer:</h2>

The correct answer is option C which is collecting data.

<h3>Explanation:</h3>

In the scientific experiments, the results are based on the data collected during the experimentation not on the surveys and asking questions like in social sciences.

Akira will note the time of the enzyme catalyzed reaction and time of the reaction without any enzyme. This time will be data and by comparing that data, she will make the conclusions.

So the correct answer here is the option C.

Pavlova-9 [17]2 years ago
3 0

Answer: Collecting Data

Performing an Investigation

Communicating results

Asking a question

Providing explanations.

Explanation: Solved the question to this.

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Explanation:

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What is the mass of oxygen in 3.34 g of potassium permanganate?
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Answer:

1.35 g

Explanation:

Data Given:

mass of Potassium Permagnate (KMnO₄) = 3.34 g

Mass of Oxygen: ?

Solution:

First find the percentage composition of Oxygen in Potassium Permagnate (KMnO₄)

So,

Molar Mass of KMnO₄ = 39 + 55 + 4(16)

Molar Mass of KMnO₄ = 158 g/mol

Calculate the mole percent composition of  Oxygen in Potassium Permagnate (KMnO₄).

Mass contributed by Oxygen (O) = 4 (16) = 64 g

Since the percentage of compound is 100

So,

                        Percent of Oxygen (O) = 64 / 158 x 100

                        Percent of Oxygen (O) = 40.5 %

It means that for ever gram of Potassium Permagnate (KMnO₄) there is 0.405 g of Oxygen (O) is present.

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for the 3.34 grams of Potassium Permagnate (KMnO₄) the mass of Oxygen will be

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