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Trava [24]
3 years ago
13

3. Round each measurement to three significant figures. Write your

Chemistry
1 answer:
Mekhanik [1.2K]3 years ago
4 0

In scientific notation, the measurement of each figure to three significant measurements are as follows:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

A significant figure is the digits in a number that is dependable and absolutely essential to express the quantity of a figure in positional notation. They are utilized to represent the appropriate degree of precision.

A scientific notation is used to express a large number in an easy decimal way multiplied by its power of 10.

From the given information, in scientific notation, and to three significant figures, we have:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

Therefore, from the above concept, we can conclude that the scientific notation of each figure in three significant figures is shown in bold format.

Learn more about scientific notation here:

brainly.com/question/1705769?referrer=searchResults

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Answer : The fugacity in the solution is, 16 bar.

Explanation : Given,

Fugacity of a pure component = 40 bar

Mole fraction of component  = 0.4

Lewis-Randall rule : It states that in an ideal solution, the fugacity of a component is directly proportional to the mole fraction of the component in the solution.

Now we have to calculate the fugacity in the solution.

Formula used :

f_i=X_i\times f_i^o

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f_i=0.4\times 40\text{ bar}

f_i=16\text{ bar}

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The following information is to be used for the next 2 questions. In order to analyze for Mg and Ca, a 24-hour urine sample was
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[Ca^{2+}]= \dfrac{0.003474 \ M \times 20.49 \ mL}{10.0 \ mL}

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