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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
The atomic mass tells the number of?
The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the atomic mass of carbon-12.
The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.
IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.
For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
When converting the mols measurement into atomic weight (or vice-versa). Since there are 6.02x10^26 atoms in a mol.
There are some keywords you can look for to determine whether or not you need to use Avogadro's number. Look for the keywords ions, molecules, moles (IF grams [g] to moles), and formula units in the question. If the question is asking for any of these terms or involves any of those terms, Avogadro's number will be necessary to use.
Why is golden ratio important in mathematics?
The Golden Ratio (φ) holds many strange properties, some of which are as follows:
- 1/φ + 1 = φ
- (2φ-1)2 = 5
- φ = √(1+φ) = √(1+√(1+√(1+√(1+φ)))) etc.
- (φ+1)*(φ-1) = φ
It also appears in the Fibonacci Series - take two consecutive terms in the series, the larger the better, and divide the larger one by the smaller one - the larger numbers you choose for this, the closer the result will be to φ.
What is atomic mass of C12H22O11?
Multiply the atomic mass of C (Carbon), which is 12, by its charge (12). multiply the atomic mass of H (hydrogen), which is 1, by its charge (22). multiply the atomic mass of O (Oxygen), which is 16, by its charge (11). Add them together as shown below 12(12) + 22(1) + 11(16) = ? 144 + 22 + 171 = ? 166 + 171= ? Atomic mass = 337
Is the law of constant composition true for all types of compounds?
No, one example would be wüstite.
Please see the link.
lithium is a metal element. Atomic mass of it is 6.941.
What does the atomic mass represent for manganese?
Manganese is a meta element. Atomic mass of it is 25.
Avogadro constant or number is the number of atoms in one mole, which is equal to 6.0221415 × 10^23.
Edited to:
The Avogadro constant is the number of particles (atoms, molecules or compounds) in one mole of a substance. It is the number of atoms in exactly 12g of carbon-12. As for all other elements, one mole of those is found in the relative atomic mass of that substance which is calculated relative to one twelfth of a carbon-12 atom e.g. one mole of oxygen atoms is in 16g of oxygen... and a mole was experiemtally worked out to contain 6.0221415 × 10^23 particles.
What can the atomic mass tell you?
The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the atomic mass of carbon-12.
The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.
IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.
For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
What whole number has the closest value to pi?
You may think Pi is infinity, which it is, it goes on and on. but there is a book with many of the number. It is a book that keeps going on with numbers of Pi. Here is some of it.
3.1415926535897932384626433832795028841971693993751
05820974944592307816406286208998628034825342117067
98214808651328230664709384460955058223172535940812
84811174502841027019385211055596446229489549303819
64428810975665933446128475648233786783165271201909
14564856692346034861045432664821339360726024914127
37245870066063155881748815209209628292540917153643
67892590360011330530548820466521384146951941511609
43305727036575959195309218611738193261179310511854
80744623799627495673518857527248912279381830119491
Pi is a non-terminating, non-repeating decimal that goes on and on. However, the closest whole number to pi is still 3.
atomic mass unit is equal to one-twelfth of the mass of a carbon-12 atomic mass is equal to one-twelfth of the mass of a carbon-12
Atomic Mass is equal to the number of protons and neutrons.
What does the number pi look like?
it starts off 3.1416 then becomes something else using all #s an amount of times.
How the avogadro number was determined?
The exact number of atoms of Carbon-12 in a block weighing precisely 12 grams.
3295 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Which element has largest atomic mass?
The naturally occurring element with the largest mass would be uranium. The largest atomic mass for an artificial element (or any element) would be Ununoctium.
Neutron stars, which are neutrons densely packed together surrounded by a thin layer of degenerate matter could possibly be considered atomic nuclei, though their specific proton count would probably not be measurable.
These, at perhaps 12 miles in diameter, would of course be larger yet.
How do you calculate avogadro's number?
1 / mass of a proton = avogadro's number 1 / mass of a proton = avogadro's number
Atomic mass is found by adding together the individual masses of the numbers of protons, neutrons, and electrons in the atom.
--> Atomic Mass = protons + neutrons
