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Sloan [31]
3 years ago
10

The second step to the scientific method is to state the "problem", the scientific question to be solved. What is one requiremen

t that needs to be fulfilled in order for the "problem" to be valid? A: It needs to be a problem that has a number answer. B: It needs to be a problem that can be solved experimentally. C: It needs to be a problem that has a yes or no answer.
Chemistry
2 answers:
Aleks [24]3 years ago
7 0
The answer is B. In order to test something out you need to be able to solve it.
kykrilka [37]3 years ago
5 0
B B B B B B B B B B B B B B B B BB B B. :)
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Dovator [93]

Answer:

5 × 10^-4 L

Explanation:

The equation of the reaction is;

2KClO3 = 2KCl + 3O2

Number of moles of KClO3 = 13.5g/122.5 g / mol = 0.11 moles

From the stoichiometry of the reaction;

2 moles of KClO3 yields 3 moles of O2

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From the ideal gas equation;

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V= 0.165 ×8.134 × 313/85.4 × 10^4

V=429.4/85.4 × 10^4

V= 5 × 10^-4 L

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