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makkiz [27]
1 year ago
14

How can we better undertand how molecule move acro a cell membrane by analyzing the ue of energy and the concentration of molecu

le
Chemistry
1 answer:
Lerok [7]1 year ago
8 0

Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower concentration as a result of thermal motion. Diffusion is an important process in human physiology. Specifically, diffusion is the mechanism of movement of oxygen, nutrients and other molecules across the capillary walls and the movement of other molecules across membranes.

What is a diffusion example?

When perfume is sprayed in one area of a room, it quickly diffuses to fill the entire space with its scent. When a drop of food coloring is added to water in a glass, the water gradually becomes colored until the entire glass is that color.

What causes a diffusion?

The kinetic energy of the molecules results in random motion, causing diffusion. In simple diffusion, this process proceeds without the aid of a transport protein. it is the random motion of the molecules that causes them to move from an area of high concentration to an area with a lower concentration.

What are the 3 types of diffusion?

The three types of diffusion are - simple diffusion, osmosis and facilitated diffusion.

(i) Simple diffusion is when ions or molecules diffuse from an area of high concentration to an area of low concentration.

(ii) In osmosis, the particles moving are water molecules.

(iii) Facilitated diffusion is the movement of hydrophilic molecules or ions across the plasma membrane.

To learn more about Diffusion visit:

brainly.com/question/29787215

#SPJ4

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The conversation of cyclopropane to propene in the gas phase is a first order reaction with a rate constant of 6.7x10-⁴s-¹. a) i
Rus_ich [418]

Answer: a)  The concentration after 8.8min is 0.17 M

b) Time taken for the concentration of cyclopropane to decrease from 0.25M to 0.15M is 687 seconds.

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) concentration after 8.8 min:

8.8\times 60s=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\log\frac{0.25}{a-x}

\log\frac{0.25}{a-x}=0.15

\frac{0.25}{a-x}=1.41

(a-x)=0.17M

b) for concentration to decrease from 0.25M to 0.15M

t=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\log\frac{0.25}{0.15}\\\\t=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\times 0.20

t=687s

7 0
3 years ago
Identify the state of matter for A, B, and C.
drek231 [11]

Explanation:

A) particles are close together in random positions with about equal kinetic energy and intermolecular forces.

These points are about liquid state.

B) particles are close together in fixed positions with low kinetic energy

These points satisfy the qualities of Solid state

C)particles are far apart with greater kinetic energy and low intermolecular forces.

The above qualities are for Gaseous state of matter

A) Liquid

B)Solid

C)Gas

7 0
2 years ago
How to prepared sodium chloride solution in the laboratory.​
Afina-wow [57]

hope it will help you

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5 0
2 years ago
If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under th
mr_godi [17]

Answer:

The volume of CO2 produced is 6.0 L (option D)

Explanation:

Step 1: Data given

Volume of oxygen = 3.0 L

Carbon monoxide = CO = in excess

Step 2: The balanced equation

2 CO (g) + O2 (g) → 2 CO2 (g)

Step 3: Calculate moles of O2

1 mol of gas at STP = 22.4 L

3.0 L = 0.134 moles

Step 3: Calculate moles of CO2

For 2 moles CO we need 1 mol of O2 to produce 2 moles of CO2

For 0.134 moles O2 we'll have 2*0.134 = 0.268 moles CO2

Step 4: Calculate volume of CO2

1 mol = 22.4 L

0.268 mol = 22.4 * 0.268 = 6.0 L

The volume of CO2 produced is 6.0 L

8 0
3 years ago
Which of the following have been determined as the oldest living tree types on Earth? Select all that apply.
fiasKO [112]
Sequoia and Bristle cone pine
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