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niya1
3 years ago
0

Which statement describes the correct plan for his procedure?

Omar observes that many buildings in his city were built using limestone. He has read that acid rain can damage limestone. He also knows that limestone reacts with acids and that chemical reactions are affected by temperature. With this in mind, he conducts an investigation to see how the amount of damage to the limestone is affected by the amount of acid on the stone. Which statement describes the correct plan for his procedure? 1. The temperature and the amount of damage to the limestone are controls. The amount of acid and the type of limestone are variables. 2. The temperature and the type of limestone are controls. The amount of acid and the amount of damage to the limestone are variables. 3. The amount of acid and the type of limestone are controls. The temperature and the amount of damage to the limestone are variables. 4. The amount of acid and the amount of damage to the limestone are controls. The type of limestone and temperature are variables.
Chemistry
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Answer:

mole fraction benzene = 0.62

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Explanation:

Raoults law for ideal solutions tells us that the totoal vapor pressure of the solution will be given by adding the partial pressures of the components of  the solution and the partial pressures are simply given by the product of the component in solution times its pure vapor pressure at the temperature given:

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Solving the algebraic equation:

75 x₁ + 22 x₂  = 55

75 x₁ + 22 ( 1- x₁) = 55   (since x₁ + x₂ = 1)

75 x₁ + 22 - 22 x₁ = 55

53 x₁  = 33

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