In an experiment, a 25.0-g sample of mercury is reacted with 5.0 g of oxygen. At the end of the reaction 6.2 g of mercury and 3.5 g of oxygen were found unreacted. According to the law of conservation of mass, how many grams of mercury oxide are formed? (Assume mercury oxide in the only product in this reaction.) show your answer

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.