Which statement best represents the relationship between a balanced chemical equation and the Law of Conservation of Mass?

A) All coefficients in a chemical equation must be the same to demonstrate
conservation of mass.

B) The number and type of atoms in the reactants will be different than the number and
type of atoms in the products.

C) When mass is conserved, new elements will form as a result of the reaction.

D) The number and type of atoms in the reactants must be the same as the number and
type of atoms in the products to demonstrate conservation of mass in a reaction.

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

it takes on an electronical energy