What is 'R' as shown in the figure?

R' and finely divided Nickel is a type of Nickel that is ground into a very fine powderIn summary, the conversation discusses the meaning of 'R' atoms in molecules, which represents a generic abbreviation for a certain part of the molecule. The conversation also mentions finely divided Nickel, which is a type of Nickel ground into a very fine powder.
  • #1
navneet9431
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IMG_20180113_101616_392.jpg

what are those 'R' atoms(highlighted in red)?
Also,What is finely divided Nickel(marked in red)?
I will be thankful for help!
Note:I am a High School student and English is my second language!
 

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  • #2
R="Rest", is a generic abbreviation for that part of the molecule which is not explicitely drawn, e.g., an ethyl group. "Finely divided" means a very fine powder which has a high specific surface.
 
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  • #3
DrDu said:
R="Rest", is a generic abbreviation for that part of the molecule which is not explicitely drawn, e.g., an ethyl group. "Finely divided" means a very fine powder which has a high specific surface.
Thank you!
 
  • #4
Usually a hydrocarbon branch
 

1. What is 'R' in the figure?

'R' in the figure refers to the symbol for the gas constant, which is a fundamental physical constant used in many scientific calculations. It is typically denoted by the symbol 'R' and has a value of 8.3145 joules per mole-kelvin.

2. Why is 'R' important in science?

'R' is important in science because it is a fundamental constant that relates the energy of a system to its temperature and the number of particles present. It is used in various equations, such as the ideal gas law, to calculate the behavior of gases and other substances under different conditions.

3. How is 'R' calculated and measured?

'R' is calculated and measured through various experimental methods, such as measuring the properties of gases at different temperatures and pressures. It can also be derived from other fundamental constants, such as Avogadro's number and the Boltzmann constant.

4. Is 'R' a universal constant?

Yes, 'R' is considered a universal constant as it is used in a wide range of scientific fields, including chemistry, physics, and thermodynamics. It has the same value across different systems and is not affected by the specific properties of the substances being studied.

5. Can 'R' be used for any type of gas?

Yes, 'R' can be used for any type of gas as it is a general constant that applies to all gases, regardless of their chemical or physical properties. However, its value may vary slightly depending on the units used for temperature and pressure in different systems.

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