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Convert 6.42x10^23 atoms a pure

Convert 6.42x10^23 atoms a pure substance to moles of that substance. That is all it says. Please help. Thank you.
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2. asked by Miley
3. 546 views
write in scientific notation. 0.0042A ) 42x10^-2 B ) 4.2x106-4 C ) 4.2x10^-3 D ) .42x10^-4
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2. asked by haven
3. 112 views
Pure substances can be made of atoms that are attracted to each other or atoms that are not attracted to each other. Which type
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2. 71 views
Pure substances can be made of atoms that are attracted to each other or atoms that are not attracted to each other. Which type
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2. asked by Optional
3. 58 views
A sample of pure cobalt-60 has an activity of 8 µCi.(t1/2 cobalt-60 = 5.26 a) (a) How many atoms of cobalt-60 are present in
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2. asked by Trixie
3. 937 views
2Al+3Cl2=2AlCl3calculate the amount(number) of excess reagen units remaining when 4.03x10^23 Al atoms and 6.42x10^23 Cl2
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2. asked by david
3. 1,208 views
The author of this selection says atoms of pure elements can create "the perfect clock" if you are able to 12A measure the size
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2. asked by daniii
3. 44 views
A mole of a pure substance contains 6.02x10^23 atoms. Alway true, sometime true or never true?-I was thinking sometime true
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2. asked by Shadow
3. 1,074 views
i need to convert the following number of atoms into gramsd. 1 million atoms of Br bromine e. 3x10^23 atoms of Ne neon
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2. asked by hope
3. 726 views
Pure water has a density of 1.00 g/ml at 297 . Calculate the molar concentration of pure water at this temperature. Would i just
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2. asked by K
3. 1,002 views