You perform a reaction in which 60.0 g of calcium (ca) is reacted with carbonic acid (h2co3) to
form 150.2 g of calcium carbonate (caco) and some hydrogen gas (h2). if you only want to
produce 45.0 g of calcium carbonate, how much calcium will you need?

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.