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____ [38]
3 years ago
9

Perform the following operation

Chemistry
1 answer:
Gekata [30.6K]3 years ago
4 0

Explanation:

Perform the following operation

and express the answer in

scientific notation.

5.4x103 x 1.2x107

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In a lab in New York, Thomas and Nikola collected data over several trials. Thomas recorded his measurements as 10.0 A, 11 A, an
Anna11 [10]

Nikola's reading has a lower range and it is logical to conclude that his reading is more precise.

Explanation:

Precision is the ability to reproduce the same set of result from a measurement. The more repeatability a measurement is, the more precise it is.

 From the given pool of data, it is easy to determine which set of data is more precise over the other.

Thomas measurements: 10.0 A, 11 A, and 8 A

 Nikola measurements: 9.0 A, 9.2 A, 8.8 A

Using the range method, it is possible to find the precision in this pool of data.

Method and Solution:

Find the range of the sample:

        Range = highest value - lowest value

 Thomas measurement; Range = (11-8)A = 3.0A

  Nikola measurement; Range = (9.2-8.8)A = 0.4A

Find the mean of the samples:

Mean of Thomas measurement = \frac{10 + 11+ 8}{3} = \frac{29}{3} = 9.7A

Mean of Nikola measurement = \frac{9+ 9.2+ 8.8}{3} = \frac{27}{3} = 9A

Now let us quote the range of value of the mean of each measurement:

   Thomas 9.7±3.0A

    Nikola   9.0± 0.4A

Nikola's reading has a lower range and it is logical to conclude that his reading is more precise.

Learn more:

mean calculation brainly.com/question/12068498

#learnwithBrainly

5 0
3 years ago
I am one of the elements. I am a soft representative metal, and you can cut me with a knife, but watch out because I am highly r
Flauer [41]

Answer:

Potassium

Explanation:

From the given riddle. Potassium is the right answer. This because on the periodic table, potassium has the smallest atomic number of any element in its period with the electronic configuration 1s2 2s2 2p6 3s2 3p6 4s1, it has the largest atomic radius within its group because the radius has no d-electron shell filled. Potassium is a soft metal but contains high reactivity.

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What provides clues about how igneous rocks were formed? A color B Texture C Luster D Streaks
Troyanec [42]
Did you ever find the answerr? if you did can I pls know ,Ty.
8 0
3 years ago
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How many grams are there in 1.70 moles of KMnO4?
topjm [15]

Answer:

269g

Explanation:

hope this helps you

8 0
3 years ago
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Which statement best describes the collisions of gas particles according to the kinetic-molecular theory?
erastovalidia [21]
<span>The statement best describes the collisions of gas particles according to the kinetic-molecular theory is that the collisions of gas particles in an ideal gas are completely elastic. An expansion in the quantity of gas particles in the holder expands the recurrence of impacts with the dividers and in this manner the weight of the gas. The last propose of the motor sub-atomic hypothesis expresses that the normal active vitality of a gas molecule depends just on the temperature of the gas.</span>
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4 years ago
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