Okay, I'm in Algebra and we haven't even studied this yet. So is this basically another write in scientific notation think which I would write as: 2.5 X 10^-2? or what would I write?if I'm thinking wrong.
2007-03-22 09:59:48 · 4 answers · asked by snape_fan_2005 2 in Education & Reference ➔ Homework Help
in 1 mole of helium there are 6.022 * 10^23 helium atoms.
(↑that number is called Avogadro's number)
so multiply 0.025 * 6.022*10^23 = 0.15055 * 10^23= 1.51*10^22 helium atoms
2007-03-22 10:11:17 · answer #1 · answered by inane person 2 · 0⤊ 0⤋
Ok, your question is about the atomic mass of Helium, but your question details are about Standard Index Form in Mathematics. I'll answer them both.
The Maths question: 2.5 x 10^-2 equals 0.025
The Science question is a bit stupid and it might be a misprint - unless I understood Wikipedia wrong! 1 Mole of Helium is about 4.003 grams, So 0.025 grams is going to make a damn small number, which I think is about:
0.006245316012990257307019735198601
which is stupid. Please, another user, help me out on this one.
Hope that helps,
Simon H
EDIT: The guy above me seems to know what he's talking about.
2007-03-22 10:12:14 · answer #2 · answered by Simon H 3 · 0⤊ 0⤋
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2016-05-16 00:51:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋
same thing as the guy or girl on the top said
2007-03-22 10:29:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋