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Mathematical Constants

Intriguing, ubiquitous, and at times mysterious, numerical constants set the allowable limits for all universal phenomena. Whether your questions involves π, Avogadro's number, Planck's constant, the atomic mass unit, or any of the other multitudes of immutable numbers used in science, this is the category where they should be asked.

2,332 Questions

What does the atomic mass stand for?

The atomic mass of an element represents the average mass of all its isotopes, taking into account their relative abundance. It is typically expressed in atomic mass units (amu) and can be found on the periodic table below the element's symbol.

What is hydrogens atomic mass?

1.0
It's 1.00794 It's 1.00794
It's 1.00794 It's 1.00794
1.001.
The atomic mass of hydrogen is 1.66x10-27 kg. It's relative atomic mass is 1. The RAM is 2 and 3 respectively in its isotopes, deuterium and tritium.
The atomic mass of hydrogen is 1.66x10-27 kg. It's relative atomic mass is 1. The RAM is 2 and 3 respectively in its isotopes, deuterium and tritium.
1.01

Atomic mass of krypton?

Kripton is a non metal element. Atomic mass of it is 83.80.

What is the true definition of coupling constant in nmr spectroscopy?

The distance between the centers of two adjacent peaks in a multiplet is usually constant and is called coupling constant denoted by J

In case of 1s order Splitting above answer is correct. in case of Non-1st Order splitting we should follow the following example

let for AMX(Quartet)

take our hand fingers for spectrum explanation(vomit thumb finger), distance between little finger to middle finger let it 'X' minus distance between showing finger and side finger of little finger let it 'y'.

Now the coupling constant is (X-Y)/2.

Kindly suggest if any mistake or difficulty to understand.

What is the difference between dissociation constant and equilibrium constant?

The dissociation constant describes the extent to which a compound breaks apart into its ions in a solution, specifically for weak acids or bases. The equilibrium constant, on the other hand, describes the ratio of product concentrations to reactant concentrations at equilibrium for a chemical reaction.

What is the atomic mass of potassium?

The atomic mass of potassium is approximately 39.10 atomic mass units.

How is the Kw constant developed?

The Kw constant is derived from the auto-ionization of water, where water molecules can transfer a proton to each other to form hydronium and hydroxide ions. The equilibrium constant for this reaction is the Kw constant, which is the product of the concentrations of hydronium and hydroxide ions in water at a given temperature.

What is the average atomic mass of silver?

The average atomic mass of silver is approximately 107.87 atomic mass units.

How do you make Nylon the Chemistry way?

The classic chemistry experiment for making Nylon is to add adipoyl chloride to hexamethylene diamine so that it forms two layers. Nylon 6,6 is formed at the interface of these two layers and can be fished out with tweezers and then continuously pulled out by twirling around a glass rod above the container.

What is the atomic mass of boron?

The atomic mass of boron is approximately 10.81 atomic mass units.

How do you determine Avogadro's constant?

Avogadro's constant is determined experimentally by measuring the charge-to-mass ratio of an electron. This value, along with other physical constants, is used to calculate Avogadro's constant. The most recent accepted value is approximately 6.022 x 10^23 mol^-1.

What is the atomic mass of nitrogen?

The atomic mass of Nitrogen is 14.0067
the atomic mass of nitrogen is 14.007, so if you round off you will get 14

What is the difference between atomic mass and average atomic mass?

Atomic mass refers to the mass of an individual atom of a specific element, while average atomic mass is the weighted average of the masses of all the isotopes of an element, taking into account their relative abundance in nature. Average atomic mass is usually listed on the periodic table, while atomic mass is specific to a single isotope.

What is Boyles law?

Boyle's law states that, temperature remaining constant, the volume of a fixed mass of dry gas decreases with an increase in pressure . Therefore, we can say that, temperature being constant, the volume of a given mass of dry gas is inversely proportional to the pressure applied on it. The official definition of Boyle's Law is "the product of the pressure and volume for a gas is a constant for a fixed amount of gas at a fixed temperature."

Standard unit of mass?

the answer is that you this stupid website doesn't do any thing at all . It just collects information from us . DO NOT GO TO THIS DUMB ,BUT INFORMATIVE STUPID but nice WEBSITE EVER AGAIN

What is the atomic mass of hydrogen-1?

The molecular mass of a molecule is just the sum of the masses of each atom in it. So if water has a mass of 18, and hydrogen has a mass of 1, and there are two hydrogens and one oxygen in water (it has formula H2O), than oxygen must weigh 16. That is:

18 - (2*1) = 16

You can also look at a periodic table, and it will tell you the mass of every element without doing any calculations! See the Web Links to the left of the answer.

What is Troutons constant?

From the Wikipedia article (linked to the left of this answer): "Trouton’s rule states that the entropy of vaporization is almost the same value, about 87-88 J K-1 mol-1, for various kinds of liquids. The entropy of vaporization is defined as the ratio between the enthalpy of vaporization and the boiling temperature." This value of 87-88 J K-1 mol-1, Trouton's constant, is also about equal to 10.5 * R, where R is the universal gas constant (R = 8.314472 J K-1 mol-1).

What is Avogadro's Number and what is its use in daily life?

Avogadro's Number is 6.0221415 × 1023 This is the number of atoms in one mole of a substance.
I'm not sure how it could be useful in daily life, but its scientific significance is that it is the number of particles (atoms or molecules) in one gram-molecular-weight of that substance. Chemists use Avogadro's number every day. It is a very valuable number for a chemist to know how to use.
See the Related Questions link to the left of this answer for how to use it.

What is zero divided by two?

0/2 = 0

If you start with nothing (zero), how can you divide it by anything!!!!!

Where is the golden ratio used?

It is used in nature all the time. Buds on plant stalks sprout using the Golden Ratio.

When architects use the Golden ratio to design a building , the building looks good, and feels good. The Parthenon on the Acropolis in Athens, Greece is such a building.

Good artist s often unconciously use the Golden Ratio ; the focus of a painting is never in the centre of the canvas, but at the golden ratio.

The ratio is 1: 1.618....

or (phi) = (1 + sqrt(5)) / 2 it is an Irrational number.

It also goes by the names , Golden Number, Devine Section, God's Number, etc.,

Have a look in Wikioedia under 'Golden Ratio'.

How do you remember your 3 times table?

To remember the 3 times table, you can practice it regularly through repetition, use flashcards or mnemonic devices, and try to understand the patterns and relationships within the numbers. It can also be helpful to visualize groups of threes or draw a multiplication chart to reinforce the multiplication facts.