Dissolving 3.00 g of an impure Sam apple of calcium carbonate in hydrochloric acid produced .656 L of carbon dioxide at 20.0 °C and 792 mmHg. CaCO3 (s) + 2HCL (aq) —> CaCl2 (aq) + CO2 (g) + H2O (l)
Calculate the percent by mass of calcium carbonate in the original sample, assuming that the impurities do not react with HCL.

%CaCO3
Your answer should be rounded to three significant digits

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.