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dusya [7]
3 years ago
8

Scientists often repeat experiments multiple times.

Chemistry
2 answers:
ZanzabumX [31]3 years ago
7 0

Hi! The reason scientists often experiments multiple times is because repeating an experiment helps to verify the results.

Bogdan [553]3 years ago
3 0

Answer:

A

Explanation:

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2. What is the average height in cm for plants in group 2? * 38 cm 56 cm 97 cm 114 cm
Nina [5.8K]

Answer:

76.25cm

Explanation:

38cm + 56cm +97cm +114cm = 305cm

305cm÷4 = 76.25cm

6 0
3 years ago
A chemist has 3.55x1022 molecules of nitrogen monoxide. How
Alina [70]

Answer:

<h2>0.059 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.55 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.05897...

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0
3 years ago
Differentiate the three pictures and explain them briefly.
Dmitry [639]

Answer:

answer

<u>Cold Front - a zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer. </u>

<u>Warm Front - a transition zone between a mass of warm air and the cold air it is replacing. </u>

<u>Stationary Front - a front between warm and cold air masses that is moving very slowly or not at all.</u>

8 0
3 years ago
Which of these is a mixture?<br> A)potassium<br> B)salad<br> C)water H20<br> Dsugar C12H22O11
Lelu [443]
A salad is a mixture but h2o is a mixture of molechules
8 0
4 years ago
Determine the number of unpaired electrons expected for [Fe(NO2)6]3−and for [FeF6]3− in terms of crystal field theory.
arsen [322]

Answer:

A. One unpaired electron

B. 5 unpaired electrons

Explanation:

In A ,Fe is in +3 oxidation state and Electronic configuration- [Ar]3d5

And NO2 is a strong field ligand hence it causes pairing in t2g orbitals and results one unpaired electron in dZX orbital.

In B, also Fe is in +3 oxidation state but F is weak field ligand hence causes no pairing of Electrons hence it results 5 unpaired electrons with electronic configuration t2g^3 eg^2

7 0
3 years ago
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