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nh4 2so4 polar or nonpolar
polar or nonpolar nh4
is nh4 + polar or nonpolar
n2h4 polar or nonpolar
nh4no3 polar or nonpolar
h2so4 polar or nonpolar
nh4cl polar or nonpolar
n2h4co polar or nonpolar
nh2 polar or nonpolar
polar or nonpolar nh3
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