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an element has atomic number 10 and an atomic mass of 20. how many neutrons are in the atom of this element? 10 20 30 0 200 nextreset
asked
Feb 19, 2017
Chemistry
high-school
1
answer
5
votes
50.2k
views
The ratio 6 ft to 4 yd as a fraction in simplest form
asked
Nov 23, 2016
Mathematics
middle-school
1
answer
0
votes
52.4k
views
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