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Marat540 [252]
1 year ago
10

What volume of a 3.95 M

Chemistry
1 answer:
KATRIN_1 [288]1 year ago
4 0

0.227L is the volume of a 3.95 M potassium chloride solution that would be needed to make 325 mL of a 2.76 M solution by dilution.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 × 10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Moles of KCl in new solution

0.325dm³ x (2.76mol/dm³)

= 0.897mol.

Hence volume needed

0.897mol ÷(3.95mol/dm³)

= 0.227dm³ or 0.227L.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

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At STP (101.3 kPa, 0 °C), what volume would 2.00 moles of oxygen gas occupy? The gas constant is 8.31
lakkis [162]

Answer:

44.8 L

Explanation:

Ideal Gas Equation -

i.e.,

PV = nRT

where,

P = pressure

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n = moles

R = universal gas constant

T = temperature

Using the information given in the question, Volume of the gas can be calculated -

P = 101.3 kPa

V = ?

n = 2.00 moles

R = 8.31

T = 0 degree C = 273.15 K

Using the above data, and putting the data in the respective formula -

PV = nRT

101.3 kPa * V = 2.00 moles * 8.31 * 273.15 K

V = 44.8 L

Hence, the volume of the given gas = 44.8 L

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Answer:

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2 years ago
How many atoms are in 1.7 mols of CHF3
erastovalidia [21]

Given :

Number of moles of CHF₃ is 1.7 .

Solution :

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So, n = 1.7 × 6.022 × 10²³ molecules

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n = 1.0237 × 10²³ molecules

Hence, this is the required solution.

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