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Studentka2010 [4]
3 years ago
5

Which of the following is an example of observational scientific investigation?

Chemistry
2 answers:
Softa [21]3 years ago
8 0
B: nothing the color of the solution when heated
hoa [83]3 years ago
5 0

Answer:

The correct answer will be option-B.

Explanation:

A scientific investigation involves many steps to answer and explain the natural phenomenon.  The observational scientific investigation is a way which includes making an observation which is also the first step of the scientific method.

In the given question, observing the color of the solution while heating will be considered as an example of observational investigation as it states that something has been observed with the senses of the human. All other are cases of experimental investigation.

Thus, Option-B is the correct answer.

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What happens if a species is unable to adapt to a changing environment.
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The awnser your looking for would be B: It's Population decreases. Because if a species is unable to adapt to a changing environment the species would either have to move away or they could die in that location.


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Help I’ll give 10 points it’s a test
mezya [45]
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Which description best characterization the motion of particles in a solid
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Read 2 more answers
2 A certain gas of 25 g at 25°c and 0.65 atm occupies a volume of 23.52L Determine the molecule mass of the gas.​
denpristay [2]

Answer:

{ \bf{PV= \frac{m}{M} RT}} \\  \\ { \tt{(0.65  \times 23.52)  =  \frac{25}{M}  \times 0.081 \times (25 + 273)}} \\  \\ M = 39.5 \: g

8 0
3 years ago
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)

       pH = 14 - 5

       pH = 9

f)  NaOH = 0.001 M

      pOH =- log [0.001]

      pOH = 3

      pH = 14 - 3

      pH = 11

g)   NaOH = 0.1 M

       pOH = -log[0.1]

       pOH = 1

       pH = 14 - 1

       pH = 13

3 0
3 years ago
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