Chemistry

Chemistry, 06.07.2019 18:30, bobbyandskylabe

How many moles are present in 16.2 g of lead?

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Chemistry, 09.10.2019 19:10, ohartshorn1599

Heavy metal ions like lead(ii) can be precipitated from laboratory wastewater by adding sodium sulfide, na2s. will all the lead be removed from 11.2 ml of 7.10×10-3 m pb(no3)2 upon addition of 12.4 ml of 0.0117 m na2s? if all the lead is removed, how many moles of lead is this? if not, how many moles of pb remain?

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Chemistry, 10.10.2019 18:00, kieonna17

First, find the total number of moles of gas that are initially present (i.e., the total moles of reactants). recall that, at stp, 22.4 l=1 mol. then, determine how many moles of each reactant are present (recalling that they are present in equal amounts) and indicate the amount below.

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