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grandymaker [24]
3 years ago
14

Scientists often investigate alternative explanations for the data and observations presented, even once a hypothesis has been t

ested and supported through an experiment. This investigation of alternative explanations 1. proves that scientific theories are not able to be disproven. 2. demonstrates that scientific theories are based on opinions. 3. strengthens the evidence and support for a scientific theory. 4. keeps the scientific community competitive and motivated.
Chemistry
1 answer:
worty [1.4K]3 years ago
8 0

Answer:

Explanation:

its 2

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Cyclobutane simplified structural formula please ​
daser333 [38]

Answer:

Cyclobutane is a cycloalkane and organic compound with the formula (CH2)4.

Explanation:

5 0
3 years ago
The ability of an atom in a molecule to attract electrons is best quantified by the ________.
nevsk [136]

Answer:

b. electronegativity

Explanation:

The ability of an atom in a molecule to attract electrons is best quantified by the _Electronegativity_.

Electronegativity is the ability of an atom to attract a shared pair of electron which is loosely held. Polar molecules often possess such properties. The Halogen group (group 17) is famous for such property because it has the highest electronegativity in periodic table.  

7 0
2 years ago
What is the relationship between the electric field strength at a point and its distances from the source charge?
diamong [38]

Explanation:

The intensity of electric field from a certain point that is assumed is proportional inversely to the square of distance’s magnitude from source. As one can see the electric field intensity is proportional inversely. Then the increase in magnitude of the space between source charge the electric field intensity decreases.

Since the proportionality is to square of distance, hence change or increase in distance is squared and that many times intensity of electric field decreases. So relation between them is inverse proportionality.  

6 0
3 years ago
What is the pH of a solution made by mixing 30.00 mL 0.10 M HCl with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solu
nirvana33 [79]

Answer:

pH = 12.15

Explanation:

To determine the pH of the HCl and KOH mixture, we need to know that the reaction is  a neutralization type.

HCl  +  KOH  →  H₂O  +  KCl

We need to determine the moles of each compound

M = mmol / V (mL) → 30 mL . 0.10 M = 3 mmoles of HCl

M = mmol / V (mL) → 40 mL . 0.10 M = 4 mmoles of KOH

The base is in excess, so the HCl will completely react and we would produce the same mmoles of KCl

HCl  +  KOH  →  H₂O  +  KCl

3 m       4 m                       -

             1 m                      3 m

As the KCl is a neutral salt, it does not have any effect on the pH, so the pH will be affected, by the strong base.

1 mmol of KOH has 1 mmol of OH⁻, so the [OH⁻] will be 1 mmol / Tot volume

[OH⁻] 1 mmol / 70 mL = 0.014285 M

- log [OH⁻] = 1.85 → pH = 14 - pOH → 14 - 1.85 = 12.15

3 0
3 years ago
Which of the following choices are types of energy?
Alika [10]
Kinetic and nuclear are energies
7 0
3 years ago
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