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Musya8 [376]
3 years ago
10

√625/1000simplification​

Chemistry
1 answer:
mixas84 [53]3 years ago
7 0

Answer:

\dfrac{1}{40}

Explanation:

To find \dfrac{\sqrt{625}}{1000}, then we have to solve the square root  "625".

A square root is regarded as a factor that occurred from a number, that is when such a number is being multiplied by itself, it gives the actual number.

SO;

\dfrac{\sqrt{625}}{1000} \\ \\ = \dfrac{25}{1000} \\ \\ = \dfrac{5}{200} \\ \\ \mathbf{= \dfrac{1}{40}}

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2.5 atm

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Answer:

       \large\boxed{\large\boxed{0.091}}

Explanation:

The<em> mole fraction</em> of a component in a mixture is the number of moles of the component divided by the total number of moles of all the components, multiplied by 100.

The symbol X is used to represent the mole fraction.

            X_A=\dfrac{\text{number of moles of component A}}{\text{number of moles of all the components}}\times 100

<u />

<u>1. Convert masses in grams to number of moles</u>

Formula:

  • number of moles = mass in grams / molar mass

a) Lithium bromide

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  • Molar mass: 86.845 g/mol

       \text{Number of moles}=\dfrac{174g}{86.845g/mol}=2.00mol

b) Water

  • Chemical formula: H₂O
  • Molar mass: 18.015 g/mol

      \text{Number of moles}=\dfrac{360g}{18.015g/mol}=19.98mol\approx 20.0mol

c) Total number of moles = 2.00 mol + 20.0 mol = 22.0 mol

<u>2. Mole fraction of lithium bromide</u>

           \text{Mole fraction of lithium bromide}=\dfrac{2.00}{22.0}=0.091

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