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Explain why a mole of iron atoms has more mass than a mole of helium atoms when there are the same number of atoms in a mole of each element?
A mole of iron has more mass than a mole of helium, even though they contain the same number of atoms, because 1 atom of iron has a greater mass than 1 atom of helium. It is similar to why 1 dozen bricks has a greater mass than 1 dozen roses. There are 12 items in each case, but 1 brick has a greater mass than 1 rose.
What else can I help you with?
Is helium a compound molecule?
Helium is a chemical element, not a compound; also helium is monoatomic.
Is HE an element or a molecule?
If HE was a compound it would be a compound of H (hydrogen) and E (sorry there is no such element).If HE is an element then it is misspelled and should be He (helium).
How many helium atoms are in 542 kg of helium?
To find the number of helium atoms in 542 kg of helium, you need to first calculate the number of moles of helium in 542 kg using the molar mass of helium, which is 4 grams/mol. Then, you can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles of helium to atoms.
Does 1 mole of hydrogen atoms equals 1 mole of helium atoms?
No, 1 mole of hydrogen atoms does not equal 1 mole of helium atoms. One mole of any element contains Avogadro's number of atoms (6.022 x 10^23), so 1 mole of hydrogen atoms would have that many hydrogen atoms, while 1 mole of helium atoms would have that many helium atoms.
Is hellium a compound?
No, helium is not a compound. It is a monatomic gas, meaning it consists of single atoms of helium.
Is helium a element or molicles?
helium is an element, it is a mono atomic molecule, He2 .
Which has the greatest number of atoms- 3.5 grams of helium or 3.5 grams of lithium?
3.5 grams of lithium would have a greater number of atoms because lithium is heavier than helium. Each element has a different atomic mass, so the same weight of each element will contain a different number of atoms.
Is helium a compound molecule?
Helium is a chemical element, not a compound; also helium is monoatomic.
How many different types of atoms are in helium?
Helium is an element, so it is made of only one type of atom.
What makes helium a element?
Helium is an element because it cannot be broken down into simpler substances through chemical means. Helium, in its elemental state as a monatomic noble gas, contains helium atoms only. Thus it is an element. It has chemical symbol He and atomic number 2.
What do atoms do in elements?
Atoms are the basic units of an element. If you were given a jar full of Helium, it's a jar filled with atoms of Helium
What is the atomicity of an element?
The atomicity of an element refers to the number of atoms present in a single molecule of that element. For example, oxygen has an atomicity of 2 because its molecule contains 2 oxygen atoms (O2), while helium has an atomicity of 1 since it exists as single atoms (He).
What are the two atoms that have th same number of proton called?
they are the same element because an element has an atomic number through its number of protons so if there was an element with 2 protons it would be number 2 in the periodic table which is helium, if another element has 2 protons it should be helium still, if it wasn't modified in anyway
How many helium atoms are there in a kilomole of helium?
The number of helium atoms is 6,022 140 857.10e26.
What has the most atoms one mole of gold helium or lead?
1 mole atoms of all atoms of any element will always have the same number of atoms and will be equal to 6.023 x 1023 atoms. However the weight will vary. 1 mole = 4 g of Helium or 197 g of gold or 207 g of lead
Is helium a molecule?
Helium is an atom. Heavier elements have molecules.
What element has 2 protons in all?
Helium 2 protons 2 electrons
