During science lab, jacob mixes together sodium hydroxide (naoh) and hydrochloric acid (hcl). the two chemicals react to form sodium chloride (nacl) and water (h2o).

which of the following are reactants in the chemical reaction described above?
a.
sodium hydroxide and sodium chloride
b.
sodium hydroxide and hydrochloric acid
c.
sodium chloride and water
d.
hydrochloric acid and water

the answer is B sodium hydroxide and hydrochloric acid

Explanation:

The reactants in a solution are always the substances that are involve at the beginning of the chemical equation. with this paragraph about what Jacob did  in the lab we can write a chemical equation

NaOH + HCl ⇒NaCl + H2O

the two first mixed substances were sodium hydroxide and hydrochloric acid hence they are the reactants, the substances that reacts to form a product that in this case the product is the two substance on the right of the arrow NaCl and H2O

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds