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Nutka1998 [239]
3 years ago
14

You push on a large crate with 500N of force. After 2 minutes you are exhausted and the crate hasn't moved. How much did you acc

omplish in those 2 minutes?
A. 1000 J
B. 500 J
C. 0 J
D. 4900 J
Physics
1 answer:
inna [77]3 years ago
6 0

Answer:

1,000 J

Explanation:

We will work this question out.

The crate has a mass of 500N.

You push for 2 minutes.

500N x 2 = 1,000 J

The answer to your question is 1,000 J.

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A teacher told a learner to react benzene (CH) with chlorine (Cl₂) to
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The minimum quantity of benzene, C₆H₆ needed for the reaction is 106.67 g

<h3>How to determine the theoretical yield of chlorobenzene, C₆H₅Cl</h3>

From the question given, the following data were obtained

  • Actual yield = 100 g
  • Percentage yield = 65%
  • Theoretical yield =?

Percentage yield = (Actual / Theoretical) × 100

65% = 100 / Theoretical

0.65 = Actual / Theoretical

Cross multiply

0.65 × Theoretical = 100

Divide both sides by 0.65

Theoretical = 100 / 0.65

Theoretical yield = 153.85 g

<h3>How to determine the mass of benzene, C₆H₆ needed</h3>

Balanced equation

C₆H₆ + Cl₂ → C₆H₅Cl + HCl

Molar mass of C₆H₆ = 78 g/mol

Mass of C₆H₆ from the balanced equation = 1 × 78 = 78 g

Molar mass of C₆H₅Cl = 112.5 g

Mass of C₆H₅Cl from the balanced equation = 1 × 112.5 = 112.5 g

SUMMARY

From the balanced equation above,

112.5 g of C₆H₅Cl were obtained from 78 g of C₆H₆

Therefore,

153.85 g of C₆H₅Cl will be produced from = (153.85 × 78) / 112.5 = 106.67 g of C₆H₆

Thus, the minimum amount of benzene, C₆H₆ needed for the reaction is 106.67 g

Learn more about stoichiometry:

brainly.com/question/16735180

#SPJ1

3 0
2 years ago
An electric wheel chair is designed to run on a single 12-V battery rated to provide 100 ampere-hours. How much energy is stored
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Explanation:

It is given that,

Voltage of the battery, V = 12 V

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Energy stored is given by the product of power and time taken. So,

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P=12\times 100

P = 1200 watts

This power can be used for 1 hour or 3600 seconds

Energy, E=1200\times 3600

E = 4320000 J

So, the energy stored in this battery is 4320000 J. Hence, this is the required solution.

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Consider a horizontal layer of the dam wall of thickness dx located a distance x above the reservoir floor. what is the magnitud
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The force on the layer will be equivalent to the weight of water on it. This is given by:
F = mg; m is the mass of water and g is the acceleration due to gravity.
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