I NEED IT 4 EXTRA POINTS 4 SK00L
2007-11-15 02:31:44 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
1 mole of H2 would have a mass of 2 grams
1/2 mole of H2 would have a mass of 1 gram.
H has 1 proton.
1/2 mole is 3.01 X10^23 particles of H2
nucleons are neutrons or protons and have a mass of 1 each.
If you took He, then the molar mass would be4.
2 protons,2 neutrons
1/4 mole of He
It takes 1 mole of neutrons or 1 mole of protons
2007-11-15 03:23:41 · answer #1 · answered by science teacher 7 · 0⤊ 0⤋
The mass of a neutron is 1.6749 Ã 10^â27 kg, so that would make about 5.97 x 10^23 to total a gram. Avogadro's number would be correct if the neutron had an atomic mass of 1, but its atomic mass is 1.008665. Protons are slightly lighter, so it would take about 5.978 x 10^23 of them.
2007-11-15 19:08:55 · answer #2 · answered by Frank N 7 · 1⤊ 0⤋
The information in the previous answer is correct, but confusing.
Approximately 6 * 10^23 protons or neutrons weigh 1 gram. This is called "Avogadro's number".
2007-11-15 12:00:29 · answer #3 · answered by bh8153 7 · 0⤊ 0⤋