Consider the compound pb(so4)2 and answer the following questions a. what is the name of this compound? lead (iv) sulfate b. what is the molar mass if this compound? explain how you calculated this value

Name of compound:Lead (IV) Sulfate

Molar mass:399 gmol-1

Explanation:

Note the relative atomic masses of the elements involved

Pb= 207, S=32, O=16

Hence Pb(SO4)2= 207 + 2[ 32+4(16)]= 207 + 192=399 gmol-1

The sum of the atomic masses of each atom present in a compound gives the molar mass (mass of one mole) of the compound as shown above.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

b.final