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maks197457 [2]
2 years ago
15

15 POINTS!! does anyone know the answer to this? is it A?

Chemistry
2 answers:
Norma-Jean [14]2 years ago
7 0

Answer:

b.2

Explanation:

lakkis [162]2 years ago
5 0

Answer:

Mole fraction of water(H₂O) is 0.5 and the mole fraction of CH₃OH(Methanol) is 0.5.

Explanation:

Greetings !

The molecular weight of CH₃OH(Methanol)=32g/mol

The number of moles of CH₃OH=

\frac{128g}{32g/mol}

=4moles

The molecular weight of water H₂O =18g/mol

The number of moles of=

\frac{72g}{18g/mol}

=4moles

Total number of moles in the solution =4mol + 4mol

=8mol

Mole fraction Methanol CH₃OH=

\frac{4mol}{8mol}

=0.5mol

Hope it helps!

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hope this was helpful :)
8 0
3 years ago
The dissolution of calcium chloride in water is given by the following equation:
never [62]

Answer:

The reactants would appear at a higher energy state than the products.

Have a nice day!

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2 years ago
The energy of the universe is constant. That what mentioned by the first law of thermodynamics,
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Answer:

No, ΔE does not always equal zero because it refers to the systems internal energy, which is affected by heat and work

Explanation:

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IF YOU KNOW THE REST OF THE TEST'S ANSWERS PLEASE SHARE
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Answer:

B. a state in which the forward and reverse reactions are proceeding at equal rates

Explanation:

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<em>Ionic equation :</em>

2K⁺(aq) + CO₃²⁻(aq) + 2NH₄⁺(aq) +2Cl⁻(aq) ⟶ 2K⁺(aq) + 2Cl⁻(aq) + 2NH₄⁺(aq) + CO₃²⁻(aq)

<em>Net ionic equation :</em>

Cancel all ions that appear on both sides of the reaction arrow (underlined).

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