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the gram formula mass
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∙ 2012-03-12 01:35:05
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What is the mass of one mole of a pure substance?
the mass of the element or pure substance
The number of atoms in a mole of any pure substance is called?
The number of atoms in a mole of any pure substance is called?
How many atoms of gold are there in a pure gold ring with a mass of 10.6 grams?
Gold has a molecular mass of 196.966569 grams per mole. 10.6 grams is then 53.8 millimoles, which equals 3.240 E22 atoms.
Why molar concentration of water is 55.56?
Molar concentration is the number of moles of a substance per litre. One litre of pure water is 1kg, or 1,000 grams. The molecular mass of water is approximately 18 grams per mole. Therefore, there are 1,000/18 = 55.56 mole of water in a litre of water, giving a concentration of 55.56 M.
How many atoms in 6.456 grams of silver?
http://en.wikipedia.org/wiki/Atomic_mass Conversion factor between atomic mass units and grams The standard scientific unit for dealing with atoms in macroscopic quantities is the mole (mol), which is defined arbitrarily as the amount of a substance with as many atoms or other units as there are in 12 grams of the carbon isotope C-12. The number of atoms in a mole is called Avogadro's number, the value of which is approximately 6.022 × 1023 mol-1. One mole of a substance always contains almost exactly the relative atomic mass or molar mass of that substance (which is the concept of molar mass), expressed in grams; however, this is almost never true for the atomic mass. For example, the standard atomic weight of iron is 55.847 g/mol, and therefore one mole of iron as commonly found on earth has a mass of 55.847 grams. The atomic mass of an 56Fe isotope is 55.935 u and one mole of 56Fe will in theory weigh 55.935g, but such amounts of pure 56Fe have never been found on Earth. The formulaic conversion between atomic mass and SI mass in grams for a single atom is: where u is the atomic mass unit and NA is Avogadro's number.
What is the mass of one mole of a pure substance?
the mass of the element or pure substance
If the atomic mass of carbon is 12 amu 1 mole of pure carbon will have a mass of?
12 grams 1 mole is equal to the amu in grams.
How many milligram is 9 millimoles?
The mole is a unit of measurement for the amount of substance or chemical amount. It is one of the base units in the International System of Units.By this definition, a mole of any pure substance has a mass in grams exactly equal to that substance's molecular or atomic mass; e.g., 1mol of calcium-40 is approximately equal to 40g, because the Ca-40 isotope has a mass of 39.9625906 amu on the C-12 scale. In other words, the numerical value of a substance's molecular or atomic mass in atomic mass units is the same as that of its molar mass--the mass of one mole of that substance--in grams.
Is molar mass is mass in grams of one kilogram of any pure substance?
False
What are the molar mass of uranium 238?
Pure Uranium-238 has an Atomic Mass of 238.1252 amu. Thus one mole of it weighs 238.1252 grams.
The number of atoms in a mole of any pure substance is called?
The number of atoms in a mole of any pure substance is called?
What is the mass of 10 ml?
Depends on the substance. For pure water it's 10 grams.
How much does half a mole of oxygen weigh?
1 mole of a pure substance has a mass equal to its molecular mass (MM) so 1 mole of a substance x MM with oxygen its molar mass is 15.9994 so if your trying to find HALF then the equation would be 0.5 x 15.9994 therefore half a mole of oxygen gas will weigh exactly 7.9997 grams approx 8grams google usually helps with these sorts of equations aswell Love Maddi Leicester
How many atoms of gold are there in a pure gold ring with a mass of 10.6 grams?
Gold has a molecular mass of 196.966569 grams per mole. 10.6 grams is then 53.8 millimoles, which equals 3.240 E22 atoms.
How many grams in one mole of pure silver?
There are 107.9 grams in one mole of pure silver. 107.9 a.m.u. is the average mass of isotopes of the element silver Answer to another (= not this one) question: The atomic number is the number of grams in a mole of any element. Hydrogen has an atomic number of 1 so a mole of hydrogen (okay, a half-mole of H2) weighs 1 gram. [ Silver is not Hydrogen ! and an atom is not a molecule]
Why molar concentration of water is 55.56?
Molar concentration is the number of moles of a substance per litre. One litre of pure water is 1kg, or 1,000 grams. The molecular mass of water is approximately 18 grams per mole. Therefore, there are 1,000/18 = 55.56 mole of water in a litre of water, giving a concentration of 55.56 M.
How many atoms in 6.456 grams of silver?
http://en.wikipedia.org/wiki/Atomic_mass Conversion factor between atomic mass units and grams The standard scientific unit for dealing with atoms in macroscopic quantities is the mole (mol), which is defined arbitrarily as the amount of a substance with as many atoms or other units as there are in 12 grams of the carbon isotope C-12. The number of atoms in a mole is called Avogadro's number, the value of which is approximately 6.022 × 1023 mol-1. One mole of a substance always contains almost exactly the relative atomic mass or molar mass of that substance (which is the concept of molar mass), expressed in grams; however, this is almost never true for the atomic mass. For example, the standard atomic weight of iron is 55.847 g/mol, and therefore one mole of iron as commonly found on earth has a mass of 55.847 grams. The atomic mass of an 56Fe isotope is 55.935 u and one mole of 56Fe will in theory weigh 55.935g, but such amounts of pure 56Fe have never been found on Earth. The formulaic conversion between atomic mass and SI mass in grams for a single atom is: where u is the atomic mass unit and NA is Avogadro's number.
