Amal performs an experiment where he mixes hydrochloric acid and zinc metal together. He writes a chemical equation that he thinks models his experiment. 2HCl(aq)+Zn(s)→ZnCl2(aq)+H2(g)
Which evidence statement from the model suggests that a chemical reaction took place?

A
A gas was formed.

B
The color changed.

C
Heat was absorbed.

D
A precipitate formed.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.