Writing and balancing equations

carbon dioxide gas is evolved, liquid water is produced, and aqueous calcium chloride results when hydrochloride acid is dropped onto limestone (calcium carbonate)

what is the equation for this word problem ?

Explain why scientists use shared characteristics to make cladograms.

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

How many moles of oxygen gas are produced from the decomposition of six moles of potassium