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fgiga [73]
3 years ago
13

What should scientists do after completing a scientific investigation?

Chemistry
2 answers:
Goshia [24]3 years ago
8 0
Steps of a scientific investigation include identifying a research question or problem, forming a hypothesis, gathering evidence, analyzing evidence, deciding whether the evidence supports the hypothesis, drawing conclusions, and communicating the results.
Mice21 [21]3 years ago
8 0

D. Make observations

The first thing you do is write a hypothesis then you were designed your procedure, after you make the procedure you would do the procedure, after you do the procedure you would confirm the results, then at the end you would make observations to see that everything is correct.

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A 7.028 gram sample of a sodium sulfate hydrate is heated. After driving off all the water, 3.100 grams of the anhydrous salt is
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Answer:

NaSO_4.10H_2O

Explanation:

Given that:-

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<u>Moles of water: </u>

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The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus, moles are:

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Thus, moles are:

moles= \frac{3.100\ g}{142.04\ g/mol}

moles_{CaSO_4}= 0.02182\ mol

The simplest ratio of the two are:

NaSO_4:H_2O =0.02182 :  0.2212 = 1 : 10

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