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riadik2000 [5.3K]
3 years ago
9

Your friend makes the statement that, “Water boils at a higher temperature than ethanol.” To which step of the scientific method

does this statement belong?
A. Experiment
B. Observation
C. Theory
D. Scientific Law
Chemistry
1 answer:
deff fn [24]3 years ago
7 0

Explanation:

Experiment because water boils at 100°c and ethanol 80°co

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C₄H₉O₂

Explanation:

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<span>Boyles law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constant.    </span>
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What are the pH of these solutions?
Tju [1.3M]

Answer:

The answer to your question is below

Explanation:

a)    HCl  0.01 M

      pH = -log [0.01]

      pH = - (-2)

     pH = 2

b)    HCl = 0.001 M

      pH = -log[0.001]

      pH = -(-3)

      pH = 3

c)    HCl = 0.00001 M

       pH = -log[0.00001]

       pH = - (-5)

      pH = 5

d) Distilled water

      pH = 7.0

e) NaOH = 0.00001 M

       pOH = -log [0.00001]

       pOH = -(-5)

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f)  NaOH = 0.001 M

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g)   NaOH = 0.1 M

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Answer:

a)  No molecules of hydrogen

b) four molecules of ammonia

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Explanation:

The balanced reaction between nitrogen and hydrogen molecules to give ammonia molecules is:

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Thus one molecule of nitrogen will react with three molecules of hydrogen to give two molecules of ammonia.

We have six molecules of each nitrogen and hydrogen in the closed container and they undergo complete reaction it means the limiting reagent is hydrogen. For six molecules of nitrogen, eighteen molecules of hydrogen will be required.

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