What are three examples of endoparasites of cattle, two methods of controlling pests of cattle, and the definition of formula mass? For an atom with 12 neutrons and 11 protons, calculate its mass.

Here are the answers to questions 5 and 6:

5.

a) (i) Three examples of endoparasites of cattle:

• Liver flukes
• Tapeworms
• Roundworms (e.g., Ascaris)

(ii) Two methods of controlling pests of cattle:

• Dipping cattle in acaricides to kill ticks and other external parasites.
• Drenching cattle with anthelmintics to control internal parasites like worms.

b) (i) Formula mass of a compound is the sum of the atomic masses of all atoms in its chemical formula.

(ii) Atom Q has 12 neutrons and 11 protons:
(α) Calculate its mass