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1 year ago

If a gas has a proportionality constant of 4.32 x 10-4 mol at room temperature for a particular solvent, what will the

Chemistry

1 answer:

inysia [295]1 year ago

6 0

$0.0467 X 10^{-4} M/kPa$ is the solubility of the gas when it exerts a partial pressure of 92.4kPa.

<h3>What is Henry's law?</h3>

Mathematically, we can get this from Henry's law

From Henry law;

Concentration = Henry constant × partial pressure

Thus Henry constant = $\frac{Concentration}{partial \;pressure}$

Henry constant = $\frac{4.32 \;X \;10^{-4} mol}{92.4kPa}$

$= 0.0467 X 10^{-4} M/kPa$

Hence, $0.0467 X 10^{-4} M/kPa$ is the solubility of the gas when it exerts a partial pressure of 92.4kPa.

Learn more about the Henry's law here:

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A particular balloon can be stretched to a maximum surface area of 1257 cm2. The balloon is filled with 3.1 L of helium gas at a

lianna [129]

Answer:

P = 0.6815 atm

Explanation:

Pressure = 754 torr

The conversion of P(torr) to P(atm) is shown below:

$P(torr)=\frac {1}{760}\times P(atm)$

So,

Pressure = 754 / 760 atm = 0.9921 atm

Temperature = 294 K

Volume = 3.1 L

Using ideal gas equation as:

PV=nRT

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

0.9921 atm × 3.1 L = n × 0.0821 L.atm/K.mol × 294 K

⇒n of helium gas= 0.1274 moles

Surface are = 1257 cm²

For a sphere, Surface area = 4 × π × r² = 1257 cm²

r² = 1257 / 4 × π ≅ 100 cm²

r = 10 cm

The volume of the sphere is :

$V=\frac {4}{3}\times \pi\times r^3$

Where, V is the volume

r is the radius

$V=\frac {4}{3}\times \frac {22}{7}\times {10}^3$

V = 4190.4762 cm³

1 cm³ = 0.001 L

So, V (max) = 4.19 L

T = 273 K

n = 0.1274 moles

Using ideal gas equation as:

PV=nRT

Applying the equation as:

P × 4.19 L = 0.1274 × 0.0821 L.atm/K.mol × 273 K

P = 0.6815 atm

4 0

2 years ago

During the action of a sodium-potassium pump, 50 ATP molecules were spent. Predict how many sodium ions are transported across t

geniusboy [140]

I think the correct answer from the choices listed above is option C. There would be 150 sodium ions that will be transported across the cell membrane. Each ATP molecule aids in moving 3 Na+ across the membrane. So, 50 times 3 is equal to 150.

8 0

2 years ago

Two different liquids are mixed together. Which observation indicates that an exothermic chemical reaction has taken place?

Lilit [14]

Answer:

rise in temp I think

Explanation:

6 0

2 years ago

Suppose 650 mL of hydrogen gas are produced through a displacement reaction involving solid iron and sulfuric acid, H2SO4, at ST

loris [4]

Answer:

4.415 g of FeSO₄

Explanation:

The balance chemical equation for given single replacement reaction is as follow;

Fe + H₂SO₄ → FeSO₄ + H₂

Data Given;

Volume = 650 mL = 0.65 L

Density at STP = 0.08988 g/L

Mass = Density × Volume = 0.08988 g/L × 0.65 L = 0.0584 g

Step 1: Calculate Moles of H₂ as;

Moles = Mass / M.Mass

Moles = 0.0584 g / 2.01 g/mol

Moles = 0.0290 mol of H₂

Step 2: Find out moles of FeSO₄ as;

According to balance chemical equation,

1 mole of H₂ is produced along with = 1 mole of FeSO₄

So,

0.0290 moles of H₂ will be produced along with = X moles of FeSO₄

Solving for X.

X = 0.0290 × 1 mol / 1 mol

X = 0.0290 moles of FeSO₄

Step 3: Calculate mass of FeSO₄ as;

Mass = Moles × M.Mass

Mass = 0.0290 mol × 151.90 g/mol

Mass = 4.415 g of FeSO₄

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2 years ago

How many milliliters of 0.150 m h2so4 are required to react with 2.05 g of sodium hydrogen cabronate?

dangina [55]

25 milliters are required

3 0

2 years ago