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VARVARA [1.3K]
3 years ago
9

vì sao nói quyết định là sản phẩm tư duy và hành động ý chí của nhà quản trị ?cho ví dụ minh họa cụ thể ?

SAT
1 answer:
Alex_Xolod [135]3 years ago
3 0
Ra quyết định là hành động hoặc quá trình lựa chọn một phương án ưu tiên hoặc quá trình hành động từ một nhóm các phương án thay thế. Nó đi trước và làm nền tảng cho hầu hết mọi hành vi có chủ ý hoặc tự nguyện. Lựa chọn hành động là quá trình chọn “việc cần làm tiếp theo” trong môi trường năng động và không thể đoán trước trong thời gian thực.
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How many grams of sucrose, c12h22o11, must be added to 500. G of water at 100°c to change the vapor pressure to 752 mm hg?.
denpristay [2]

The mass number of sucrose that must be added to 500 g of water is 100.979 grams

To be able to solve this question, we need to use the number of moles concept and mole fraction concept.

<h3>What is the number of moles?</h3>

The number of moles is related to the mass of the substance divided by the molar mass of the substance.

From the given parameters;

The number of moles of water = mass/molar mass

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number of moles = 500 g/ 18.02 g/mol

number of moles = 27.75 moles

However,

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Using the mole concept:

\mathbf {X_{C_{12}H_{22}O_{11}} = \dfrac{n_{C_{12}H_{22}O_{11}}}{n_{H_2O}+n_{C_{12}H_{22}O_{11}}} }

By relative lowering of vapor pressure:

\mathbf{\dfrac{P^0_{H_2O} - P_{H_2O}}{P^0_{H_2O}} = X_{C_{12}H_{22}O_{11}}}

\mathbf{\dfrac{760 -752}{760} = \dfrac{n_{C_{12}H_{22}O_{11}}}{27.75 +n_{C_{12}H_{22}O_{11}}} }}

\mathbf{0.01053 = \dfrac{n_{C_{12}H_{22}O_{11}}}{27.75 +n_{C_{12}H_{22}O_{11}}} }}

\\ \\ \mathbf{0.01053 (27.75) +0.01053 (n_{C_{12}H_{22}O_{11}} ) = n_{C_{12}H_{22}O_{11}}}

\\ \\ \mathbf{0.2922075 =0.98947&#10; (n_{C_{12}H_{22}O_{11}} )}

\\ \\ \mathbf{ (n_{C_{12}H_{22}O_{11}} ) = \dfrac{0.2922075 }{0.98947}}

\\ \\ \mathbf{ (n_{C_{12}H_{22}O_{11}} ) =0.295 \ moles}

The mass of sucrose = number of moles × molar mass

The mass of sucrose = 0.295 moles × 342.3 g/mol

The mass of sucrose = 100.979 grams

Learn more about number of moles here:

brainly.com/question/13314627

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