Question

sulfuric acid is made of two hydrogen atoms (h), one sulfur atom (s), and four oxygen atoms (o). what is its molecular formula?
2h4so
h4s2o
h2so4
h2s2o4

what is the best synonym for the word “stoichiometry”?
combining atoms
balancing chemical equation
discovering new chemical formulas
breaking the chemical bonds that hold molecules together

the chemical symbol “pb” most likely represents:
carbon
antimony
lead
helium

Explanation:

Step1: Determine sulfuric - acid formula

Given 2 hydrogen, 1 sulfur, and 4 oxygen atoms. Chemical formula is written with element symbols and sub - scripts for number of atoms. So the formula is $H_2SO_4$.

Step2: Define stoichiometry

Stoichiometry is about balancing chemical equations to relate amounts of reactants and products. So "Balancing chemical equation" is the best synonym.

Step3: Identify element for symbol "Pb"

The chemical symbol "Pb" represents lead.

Answer:

1. C. $H_2SO_4$
2. B. Balancing chemical equation
3. C. Lead