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djyliett [7]
3 years ago
7

A reporter wants to investigate the reasons for the high levels of air pollution in a locality. Initial research reveals two pos

sible sources: an old thermal power plant and a sheet metal factory. She hands out the questionnaire above to the local residents to investigate the matter further. What can be concluded about the results of her investigation? A) It would help to get to the root cause of the air pollution in the locality. B) It would help her take people's opinions and shut down both the sources of pollution. C) It would be biased because no questions about the sheet metal factory have been asked. D) It would be inconclusive because there are no questions about the nature of the pollutants.
Chemistry
1 answer:
irga5000 [103]3 years ago
5 0
<h2><u><em>Answer:</em></u></h2><h2><u><em>The correct answer is C</em></u></h2><h2><u><em>Explanation:</em></u></h2><h2><u><em>An unbiased investigation would involve questions about both possible sources of pollution. However, the reporter’s questionnaire only asks questions on the power plant. The results of her investigation would be biased because no questions about the sheet metal factory have been asked.</em></u></h2><h2><u><em>Mark me the brainliest </em></u></h2><h2><u><em>PLZ</em></u></h2><h2><u><em>Hit the THX button to</em></u></h2>

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Phosphorous trichloride (PCl3) is produced
vladimir1956 [14]

The percentage yield obtained from the given reaction above is 74.8%

<h3>Balanced equation </h3>

P₄ + 6Cl₂ → 4PCl₃

Molar mass of P₄ = 31 × 4 = 124 g/mol

Mass of P₄ from the balanced equation = 1 × 124 = 124 g

Molar mass of PCl₃ = 31 + (35.5×3) = 137.5 g/mol

Mass of PCl₃ from the balanced equation = 4 × 137.5 = 550 g

<h3>SUMMARY</h3>

From the balanced equation above,

124 g of P₄ reacted to produce 550 g of PCl₃

<h3>How to determine the theoretical yield </h3>

From the balanced equation above,

124 g of P₄ reacted to produce 550 g of PCl₃

Therefore,

79.12 g of P₄ will react to produce = (79.12  × 550) / 124 = 350.9 g of PCl₃

<h3>How to determine the percentage yield </h3>
  • Actual yield of PCl₃ = 262.6 g
  • Theoretical yield of PCl₃ = 350.9 g
  • Percentage yield =?

Percentage yield = (Actual /Theoretical) × 100

Percentage yield = (262.6 / 350.9) × 100

Percentage yield = 74.8%

Learn more about stoichiometry:

brainly.com/question/14735801

4 0
2 years ago
Which items are properties of acids?<br> soapy<br> sour<br> bitter<br> sharp<br> possible burns
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Sour sharp and possible burns
3 0
3 years ago
Read 2 more answers
Will mark brainliest!!
olga2289 [7]

Answer:

I think its B im not sure

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6 0
3 years ago
Warm air _____.
svp [43]

Answer:

cools as it rises, then sinks back down

Explanation:

The movement of air is a convection current. Convection currents occur when warm air rises, cools down, and sinks due to gained density, replacing the warm air closer to the ground, creating a cycle.

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What do you make when you dissolve sugar in water?
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Answer:

Answer is c.

Explanation:

when you mix sugar with water,the sugar dissolves to make a transparent solution.

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