. A sample of limestone weighing 1.034 g is dissolved in 75.00 mL of 0.2500 M hydrochloric acid. The following reaction occurs: CaCO3 (s) + 2H+ (aq) → Ca2+ (aq) + CO2 (g) + H2O (l) It is found that 19.66 mL of 0.1600 M NaOH is required to titrate the excess HCl left after reaction with the limestone. What is the mass percent of CaCO3 in the limestone?

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but