Do moles of elements weigh the same?
If we define a mole as the number of atoms that are required to make an element weigh its atomic weight/mass in grams, then however many atoms of A it takes to equal its atomic weight in grams, that same number of atoms of B will weigh 27 times more.
What is the mole value of oxygen?
One mole of atoms of oxygen has a mass of 16 g, as 16 is the atomic weight of oxygen, and contains 6.02 X 1023 atoms of oxygen.
What is meant by one mole of oxygen?
The mole is related to the mass of an element in the following way: one mole of carbon-12 atoms has 6.02214076 × 1023 atoms and a mass of 12 grams. In comparison, one mole of oxygen consists, by definition, of the same number of atoms as carbon-12, but it has a mass of 15.999 grams.
What is the mass of one lead atom?
202 amu is the average weight of a single lead atom. We can also write 202 grams as the weight of an Avogadro’s number of lead atoms.
What is the mass in grams of lead () atoms?
You know that the mass of an individual lead atom is equal to 3.4⋅10−22 grams.
Which has more atoms a mole of iron or a mole of lead?
One mole of any substance, by definition, is equal to Avogadro’s number, or 6.022 x 10^23 atoms of that substance. … This makes intuitive sense since iron is the lighter of the two metals and therefore will have more atoms in 2 grams to equal the same weight of the heavier element lead.
Is mole equal to molar mass?
A mole is 6.02⋅1023 (avogadro’s number) molecules of a substance. The molar mass is the amount of mass that 1 mole of that substance possesses.
Is a mole or gram bigger?
Mole is the SI unit used to measure how many molecules or atoms there are. One mole is around 600 sextillion molecules. Scientists use this number because 1 gram of hydrogen is around 1 mole of atoms. … This means that if an atom has a mass of one amu, one mole of this atom weighs one gram.
Why do 1 mole of different elements have different masses?
Consistent with its definition as an amount unit, 1 mole of any element contains the same number of atoms as 1 mole of any other element. The masses of 1 mole of different elements, however, are different, since the masses of the individual atoms are drastically different.