Atomic Mass

The atomic mass of chromium is approximately 51.996 u (unified atomic mass units).

The atomic weight of calcium is 40,078 +/- 0,004 (IUPAC, 2005).

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

The density of the metal mercury (liquid) is 13,534 kg/m3 or (liquid) 13.534 g/cm3. The correct SI measure of the density is kg/m3.

The atomic number of lithium is 3. The only stable isotope of lithium has 4 neutrons. Therefore its relative atomic mass is 7.

The atomic spectra of iron consists of multiple emission lines at specific wavelengths, which are characteristic of transitions between different energy levels of electrons within the iron atom. These spectral lines can be observed in the visible range and are often used to identify and study the presence of iron in various samples, such as stars or minerals.

A neutron has a weight of 1.674927 x 10-24 gram. A proton has a mass of 1.672622 x 10-24 grams. Protons and neutrons can also be said to weigh 1 atomic mass unit (amu). An electron is only 1/1836 of the weight of a proton (1 amu) and so its mass is usually ignored in the calculation of atomic mass.

== == Atomic Mass: 54.93805 amu

Atomic number: 11

Mass number: 23 (11 protons + 12 neutrons)

Atomic mass (aka atomic weight): 22.98976928

Element: Sodium (sodium-23 is the only stable sodium isotope)

The unit of atomic mass for aluminum is atomic mass unit (amu) or unified atomic mass unit (u).

you have to u measure it with a triple beam balance

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

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

The atomic mass of argon is approximately 39.95 atomic mass units.

Well, since the weight of planes varies so much, you cannot really put and "average" on the mass of an airframe. Some weigh 3000lbs, some weigh 1,000,000lbs. Also it changes everyday with temperature (true, believe it or not), passenger weight and other factors.

The atomic mass, in grams, is the mass of one mole of atoms.

An atomic symbol is a 1-, 2-, or 3-letter code that represents an element. If the symbol consists of one letter, like carbon (C), the letter is capitalized. If the symbol consists of two letters, like magnesium (Mg), the first letter is capitalized, but the second letter is not. The 3-letter codes are for elements that have been recently synthesized and have not been given a permanent name, and for elements that have yet to be synthesized, both of which are given temporary systematic names based on their atomic numbers. An example is element 115, with the symbol Uup, which is currently named ununpentium, which means one, one, five. Eventually this element will be given a permanent name with either a 1-letter or 2-letter symbol.

The abundance of X-100 is 75 percent, and X-104 has an abundance of 25 percent. The answers are found by solving two equations with two unknowns, which are A plus B equals 100, and 100A plus 104B equals 10,100.

The mass of a 15 ml sample of mercury would be approximately 166.5 grams. Mercury has a density of 13.6 grams per milliliter, so by multiplying the volume (15 ml) by the density, you can calculate the mass.

Barium is a non metal element. Atomic mass of it is 137.

The molar mass of starch can vary depending on its composition, but on average, it is about 162 g/mol. Starch is a complex carbohydrate made up of repeating units of glucose molecules, which contribute to its molar mass.

The atomic weight of Hg is 200.59 grams per mole.

To find the atomic mass of element E, first calculate the mass of 3 atoms of E in E3H8: 91.27 g E / 3 = 30.43 g E per atom of E Next, the atomic mass of E can be calculated by dividing this mass by the mass of one mole of E: 30.43 g/mol E ÷ 1 atom of E = 30.43 g/mol