When limestone rock, which is principally calcium carbonate, is heated, a reaction occurs. If 11.7 g of carbon dioxide were produced in the lab from the decomposition of 30.7g of calcium carbonate, what is the percent yield for the reaction?

86.7 %

Explanation:

To calculate the moles, we use the equation:

a) moles of

According to stoichiometry :

1 moles of give = 1 mole of

Thus 0.307 moles give = of

Mass of

Therefore, the percent yield for the reaction is, 86.7%

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.