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miv72 [106K]
3 years ago
5

Sam wants to conduct an investigation of the velocity of a golf ball when hit off of the tee using the scientific method. Review

the procedural steps that Sam plans to follow during his investigation.
Collect data from a sample of ten golf balls hit off of the same tee by the same golfer.

Hypothesize that the golf ball will reach a velocity of 5 feet per second each time the ball is hit from the tee by the same golfer.

Observe the golf ball as it is hit off of the tee.

Analyze data using a table of data and graph of the data.

Communicate results based on the sample data collected.



Which of the following options represents the order of Sam’s procedural steps according to the scientific method?

Sam should plan to hypothesize about the velocity of the golf ball, observe the golf ball, collect data from a sample of golf balls, communicate the results based on collected data, and analyze the data.

Sam’s plan of procedural steps is correct.

Sam should plan to observe the golf ball, hypothesize about the velocity of the golf ball, collect data from a sample of golf balls, analyze the data, and communicate the results based on collected data.

Sam should plan to observe the golf ball, collect data from a sample of golf balls, analyze the data, hypothesize the golf ball’s velocity, and communicate the results based on collected data.
Chemistry
2 answers:
Morgarella [4.7K]3 years ago
8 0
Sam is correct is correct
Nookie1986 [14]3 years ago
3 0

Answer:

Sam’s plan of procedural steps is correct.

Explanation:

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The total volume of the gas produced, given the data from the question is 11.84 L

<h3>How to determine the mole of (NH₄)₂CO₃</h3>
  • Mass of (NH₄)₂CO₃ = 11.83 g
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Mole = mass / molar mass

Mole of (NH₄)₂CO₃ = 11.83 / 96

Mole of (NH₄)₂CO₃ = 0.123 mole

<h3>How to determine the volume of NH₃</h3>

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Thus, we can determine the volume of NH₃ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
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Divide both side by P

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<h3>How to determine the volume of CO₂</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of CO₂

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of CO₂

Thus, we can determine the volume of CO₂ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of CO₂ (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

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<h3>How to determine the volume of H₂O</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of H₂O

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of H₂O

Thus, we can determine the volume of H₂O produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of H₂O (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

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<h3>How to determine the total volume of gas produced</h3>
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Total volume = 5.92 + 2.96 + 2.96

Total volume of gas = 11.84 L

Learn more about ideal gas equation:

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Learn more about stoichiometry:

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