6. How many Ml of 12.0M HCl is needed to prepare 300mL of0.250M HCl solution? I

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6. How many Ml of 12.0M HCl is needed to prepare 300mL of0.250M HCl solution?
         I tried to figureout the moles in 300mL of 0.250M sol, but not sure if that's evenreq'd. answer = .0075mol   The molar mass i calc'dfor HCl was 36.46g/mol.
Now i'm stuck and spent over an hour of this ?.

10. H2SO4 + 2NaOH --> Na2SO4 + 2H2O A 10mL sample ofH2SO4 sol req'd 18.71mL of 0.248MNaOH for neutralization. Calc the molarity of theacid...
I've tried to figure out using my textbook and classpowerpoint and just can seem to wrap my head around these! Please help, will rate lifesaver :o) 6. How many Ml of 12.0M HCl is needed to prepare 300mL of0.250M HCl solution?
         I tried to figureout the moles in 300mL of 0.250M sol, but not sure if that's evenreq'd. answer = .0075mol   The molar mass i calc'dfor HCl was 36.46g/mol.
Now i'm stuck and spent over an hour of this ?.

10. H2SO4 + 2NaOH --> Na2SO4 + 2H2O A 10mL sample ofH2SO4 sol req'd 18.71mL of 0.248MNaOH for neutralization. Calc the molarity of theacid...
I've tried to figure out using my textbook and classpowerpoint and just can seem to wrap my head around these! Please help, will rate lifesaver :o)

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