A powdered rock sample (8.50 g) contains CaCO₃ mixed with inert SiO₂
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
A powdered rock sample (8.50 g) contains CaCO₃ mixed with inert SiO₂. When the sample is treated with excess HCl, the CO₂ released is collected and found to occupy 1.68 L at 298 K and 1.00 atm. Determine the percent by mass of CaCO₃ in the original sample (report to one decimal place).