15. an unknown metal carbonate reacts with hydrochloric acid according to the following
equation.
m2co3(aq) + 2hcl(aq) --2mcl(aq) + co2(g) + h2o()
a 3.44 g sample of m2co3was dissolved in distilled water to make 250 cm of solution
a 25.0 cm portion of this solution required 33.2 cm' of 0.150 mol dm'hydrochloric acid
for complete reaction.
i calculate the amount, in moles, of hcl in 33.2 cm' of 0.150 mol dm-hydrochloric
acid. give your answer to 3 significant figures!
11. calculate the amount, in moles of mco that reacted with this amount of hcl. give!
your answer to 3 significant figures.
ini. calculate the amount in moles of mco, in the 3.44 g sample. give your answer to
significant figures
iv. calculate the relative formula mass. mr. of m_co, give your answer to i decimal
place