posted by Deanna .
0.7g of an unknown mixture of NaHCO3 and Na2CO3 is mixed with 3mL of 12M HCl.what is the mass of NaHCO3 and Na2CO3 in the mixture of NaHCO3 and Na2CO3? Use these equations:
mass of mixture= mass of NaHCO3+mass of Na2CO3
moles of NaCl=2(moles of Na2CO3)+1(moles of NaHCO3)
Let X = mass Na2CO3
then Y = mass NaHCO3
X + Y = 0.7g
X(2/molar mass Na2CO3) + Y(1/molar molar mass NaHCO3) = 0.036
Solve the two equations simultaneously for X.