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nh4 2co3 + pb no3 2
pb no3 2 + h2so4
pb no3 2 + nh4cl
pb no3 2 + na2so4
na2so4 and pb no3 2
nh4 3po4+pb no3 4 pb3 po4 4+nh4no3
nh4 2so4 aq +ba no3 2 aq
pb no3 2 + na3po4
nh4 2so4 ba oh 2
pb no3 2 aq + na2so4 aq
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