To find the mass percent of dolomite, or CaMg(CO3)2, in a soil sample, a geochemist titrates 13.70 g of soil with 33.56 mL of 0.2516 Molarity HCl. What is the mass percent of dolomite in the soil?someone please help me, i‘ve tried a million times and my online homework says its wrong!
Dumb question to ask on Yahoo.Maybe time to ask your teacher or find some other area of reference
the bulbs only could be out or the wiring is undesirable. and the examine engine gentle, with a vehicle with that many miles on the engine, the gentle can pass on for no reason in any respect yet i might nevertheless get it looked at via a mechanic
The lights have nothing to do with the check engine so NO that's not the problem it has to do with the muffler AKA catalyst
First write the balanced equation between dolomite and HCl. CaMg(CO3)2 + 4HCl CaCl2 + MgCl2 + 2CO2 + 2H2O moles HCl Molarity HCl x L HCl (0.2516)(0.03356) 0.008444 moles HCl The balanced equation tells us that 1 mole of CaMg(CO3)2 reacts with 4 moles of HCl. 0.008444 moles HCl x (1 mole CaMg(CO3)2 / 4 moles HCl) 0.002111 moles CaMg(CO3)2 The molar mass for CaMg(CO3)2 Ca (40.1) + Mg (24.3) + 2 x C (2 x 12.0) + 6 x O (6 x 16.0) 184.4 g/mole. 0.002111 moles CaMg(CO3)2 x (184.4 g CaMg(CO3)2 / 1 mole CaMg(CO3)2) 0.3893 g CaMg(CO3)2 %CaMg(CO3)2 (g CaMg(CO3)2 / g sample) x 100 (0.3893 / 13.70 g) x 100 2.842% Check my math.
