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Sidana [21]
3 years ago
12

The change in time for the first quarter is

Chemistry
2 answers:
Flura [38]3 years ago
6 0

Answer:

2.34

Explanation:

icang [17]3 years ago
6 0

Answer: The change in time for the first quarter is  1.39 seconds.

The change in time for the second quarter is 0.78 seconds.

The change in time for the third quarter is 0.64 seconds.

The change in time for the fourth quarter is 0.54 seconds.  

Explanation: took info from my data and completed lab

Step 5: Measure the Speed of the Toy Car on the Higher Track

Calculate the change in time for each quarter of the track. Record the change in time in Table E of your Student Guide.

Also added the other calculations -

<em><u>Calculate the average time the car took to reach each checkpoint. Record the average time in Table D of your Student Guide.</u></em>

The average time to the first quarter checkpoint is 1.39 seconds.  

The average time to the second quarter checkpoint is 2.18 seconds.

The average time to the third quarter checkpoint is 2.82 seconds.

The average time to the finish line is 3.36 seconds.

<u>Calculate the speed of the car at each checkpoint by dividing the distance between each checkpoint, in meters, by the change in time. Record your answers in Table E of your Student Guide. </u>

The speed at the first quarter checkpoint is 1.09 m/s.  

The speed at the second quarter checkpoint is 1.95 m/s.

The speed at the third quarter checkpoint is 2.37 m/s.

The speed at the finish line is 2.80 m/s.

Please make me Brainly..:)

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The main constituent of gallstones is cholesterol. Cholesterol may have a role in heart attacks and blood clot formation. Its el
Nataly [62]

The main constituent of gallstones is cholesterol. Cholesterol may have a role in heart attacks and blood clot formation. Its elemental percentage composition is 83.87% C, 11.99% H, and 4.14% O. It has a molecular weight of 386.64 amu. Empirical formula is C₃H₄O₁ and Molecular formula is 7(C₃H₄O₁).

<h3>What is Empirical Formula ?</h3>

Empirical formula is the simplest whole number ratio of atoms present in given compound.

Element   %   Atomic mass   Relative no. of atoms  Simplest whole ratio

C            83.87       12                     \frac{83.87}{12} = 6.98                   \frac{6.98}{0.25} = 3

H            11.99         1                       \frac{11.99}{1} = 11.09                  \frac{11.09}{0.25} = 4

O            4.14          16                      \frac{4.14}{16} = 0.25                    \frac{0.25}{0.25} = 1

Thus the empirical formula is C₃H₄O₁.

<h3>How to find the Molecular formula of compound ?</h3>

Molecular formula = Empirical formula × n

n = \frac{\text{Molecular weight}}{\text{Empirical formula weight}}

  = \frac{386.64}{56}

  = 7

Molecular formula = Empirical formula × n

                               = 7 (C₃H₄O₁)

Thus from the above conclusion we can say that The main constituent of gallstones is cholesterol. Cholesterol may have a role in heart attacks and blood clot formation. Its elemental percentage composition is 83.87% C, 11.99% H, and 4.14% O. It has a molecular weight of 386.64 amu. Empirical formula is C₃H₄O₁ and Molecular formula is 7(C₃H₄O₁).

Learn more about the Empirical Formula here: brainly.com/question/1603500

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The most well-known biogenic d-elements
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