Question #149358
A stock solution is made by dissolving 51.6 g of Mg3N2 in enough water to make a 46.8 mL solution. 90.4 mL of this Mg3N2 solution are diluted to 200.0 mL. What is the final concentration of Mg3N2?
1
Expert's answer
2020-12-08T05:32:04-0500
n(Mg3N2)=m/M=51.6/100.95=0.27moln(Mg_3N_2) = m/M = 51.6/100.95 = 0.27 mol

c1=n/V1=0.27/0.0468=5.77Mc_1 = n/V_1 = 0.27/0.0468 = 5.77M

n1(Mg3N2)=c1V2=5.770.0904=0.52moln_1(Mg_3N_2) = c_1V_2 = 5.77*0.0904 = 0.52 mol

c2=0.52/0.200=2.6Mc_2 = 0.52/0.200 = 2.6M


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