# Rate of diffusion and molecular weight. What Is the Relationship Between the Size of the Molecules & Diffusion Through the Cell Membrane? 2019-03-07

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## The Effect of Molecular Weight on the Rate of Diffusion of Substances

Diffusion explains the net of molecules from a region of higher concentration to one of lower concentration. A white ring of smoke formed closer to the heavier substance. In discussions of the computer efficiency, the bit rate is the important; we want to know how long it takes to process each and every piece of information. Trace an individual molecule to see the path it takes. It depends on these two factors: 1. It could be argued that there are only a few that become rich in the above scenario.

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## How Does Molecular Size Affect Diffusion Rate?

The agar-water gel set-up used a petri-dish of agar-water gel with three wells on it. According to Sherman and Sherman 1989 , the different rates of diffusion of a substance is due to the inherent heat energy of the molecules proportional dependent to temperature, electrical charges and arrangement of atoms or molecules, pressure, and molecular weight. With this correlation in mind, it is expected a color change would occurā¦ 1270 Words 6 Pages define diffusion and demonstrate this process in gases b. The relaity of the fact is that there are plenty of ways for you to loose weight, even if you do not wish to become a gym-o-holic. The rate of this movement is a function of temperature, of the fluid and the size mass of the particles.

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## How does molecular weight affect the rate of diffusion?

The rate at which molecules diffuse can be determined by the relationship of molecular weight and that rate of diffusion through a membrane. The Effect of Molecular Weight on the Diffusion Rate of Substances Jesselyn P. If the total volume of the solutions in both cups is the same, which cup contains more water? This easyaccess to cells explains the powerful and wide ranging effects ofsuch hormones. Gases dont diffuse at the same rate every time. Results showed that as the time elapsed increases, the rate of diffusion decreases and the substance with the lowest molecular weight had the highest diffusion. You can say that the formula mass of common table salt, NaCl, is 58. This makes sense, since a gas diffuses through a thin wall much faster than it would diffuse through a thick wall.

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## How to Calculate Diffusion Rate

Several factors affect the rate of diffusion of particles, including molecular weight, concentration gradient, pressure, temperature and type of solute. Bit rate equals the baud rate times; number of bits represented by each signal unit. To be able to measure the rate of diffusion, a water-agar gel was used. Many dieticians, nutrinonsta and even profeesional athletes will tell you, that your diet, contributes to yoour weight loss endeavors evene more so that excersining alone. For an attractive interaction between particles, the diffusion coefficient tends to decrease as concentration increases.

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## The Effect of Molecular Weight on the Rate of Diffusion of...

Mechanism of Osmosis Osmosis is a special case of diffusion. To illustrate this, imagine two full glasses of water. Diffusion is a process of equalization which involves movement of molecules from an area of high concentration to an area of low concentrationā¦ 1599 Words 7 Pages Osmosis and diffusion are two important processes in the human body that help in the functioning of cells and homeostasis, or maintaining balance within the body. Hypothesis Propionic acid is going to be the most vicious because the stronger the intermolecular forces the more viscous. This makes the gas diffuse faster.

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## Diffusion and Effusion

Diffusion relies heavily on energy and movement. In order to identify the effect of molecular weight to the rate of diffusion of different substances, the water agar-gel set-up was used. This is because a bigger molecule requires greater force in able to move such particle, unlike the smaller particle which merely needs a lesser force for it to move Meyertholen, 2007. Consider two systems; S 1 and S 2 at the same and capable of exchanging. Therefore, the lower their viscosity is, the shorter they take to get through a certain volume of the medium they are in.

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## Molecular diffusion

The validity of the hypothesis formulated can be determined using a medium in which diffusion is observable and measurable. Not exactly, although they can be. Oxygen, for example, has a molecular weight of 31. Such factors include temperature or presence of energy, the distance, the barriers, the concentrations and many more. For example, if the concentration of a molecule is much higher inside the cell than outside, the molecules will leave the cell more quickly than when the concentration difference between the two regions is minimal. Glucose is able to get into cells much faster than other sugars.

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## Relation between rate of diffusion and molecular weight

The rate of diffusion is inversely proportional to resistance, distance traveled down a concentration gradient and the weight of the molecule. Bit rate can be defined as the number of bits transmitted during 1s. Mass is a quality of matter apparently a construct of the Higgs field, but that's probably a little more answer than you were looking for. The molecular weight of a substance is the total weight of all atoms present in the compound. Effect of Molecular Weight on the Rate of Diffusion Olive Kristianne C.

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