How is stoichiometry used to calculate energy absorbed when a mass of
1 answer:
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Answer:
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.
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<u>1. Convert masses in grams to number of moles</u>
Formula:
- number of moles = mass in grams / molar mass
a) Lithium bromide
- Chemical Formula: LiBr
- Molar mass: 86.845 g/mol
b) Water
- Chemical formula: H₂O
- Molar mass: 18.015 g/mol
c) Total number of moles = 2.00 mol + 20.0 mol = 22.0 mol
<u>2. Mole fraction of lithium bromide</u>