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2 years ago

What is the molality of a solution prepared by dissolving 150.0 g C6H12O6 in 600.0 g of H2O?

Chemistry

2 answers:

elena-14-01-66 [18.8K]2 years ago

4 0

Answer:

50/36 = 25/18

Explanation:

Solution at attachment box

Molality = mole of dissolvable (this question glucose) / kg of water

Masja [62]2 years ago

3 0

Answer:

Molality = 1.38 mol/Kg

Explanation:

Given data:

Molality of solution = ?

Mass of C₆H₁₂O₆ = 150.0 g

Mass of water = 600.0 g (600 g ×1 kg/1000 g= 0.6 Kg)

Solution:

Number of moles of C₆H₁₂O₆:

Number of moles = mass/molar mass

Number of moles = 150.0 g/180.16 g/mol

Number of moles = 0.83 mol

Molality:

Molality = moles of solute / kg of solvent

Molality = 0.83 mol /0.6 Kg

Molality = 1.38 mol/Kg

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Answer:

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2 years ago

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Answer:

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2 years ago

Match the following associations. Exothermic or endothermic

Alekssandra [29.7K]

Answer:

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Explanation:

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It is also called as Heat of reaction

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If energy of products lesser than energy of reactants then the reaction enthalpy change is exothermic .

For example

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3 years ago

Calculate the molarity of a solution made by adding 120 g of naoh (40.00 g/mol) to enough water to make 500.0 ml of solution. g

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Explanation:

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1 year ago

Volume is the independent or dependent variable

m_a_m_a [10]

Answer:

Independent

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2 years ago