Neomycin, amino glycoside antibiotic cream contains 300 mg of neomycin sulphate the active ingredient in 30 g of ointment base. The mass percentage of neomycin is ……………..

Explanation

`1%`
The mass percentage of nemycin `=("Mass of neomycine sulphare")/("Mass of solution in g") xx 100`
`= (0.3g)/(30g) xx 100 =1%`