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3 years ago

30) How many grams of CH3OH must be added to water to prepare 210 mL of a solution that is

Chemistry

1 answer:

gavmur [86]3 years ago

4 0

Answer:

Mass = 10.0 g

Explanation:

Given data:

Molarity = 1.50 M

Volume = 210 mL ( 0.21 L)

Grams of CH₃OH = ?

Solution:

Number of mole = molarity × volume

Number of mole = 1.50 M × 0.21 L

Number of mole = 0.315 mol

Mass of CH₃OH:

Mass = Number of moles × molar mass

Mass = 0.315 mol × 32.04 g/mol

Mass = 10.0 g

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Answer:

Percent Composition

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1 year ago

Three kilograms of steam is contained in a horizontal, frictionless piston and the cylinder is heated at a constant pressure of

lakkis [162]

Answer:

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First, considering both initial and final states, write the energy balance:

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$U_{2}-U_{1}=500-(3*75)=275kJ$

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Subtracting the first from the second:

$1.5P_{1}V_{1}=nR(T_{2}-T_{1})$

Isolating $T_{2}$ :

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3 years ago

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