A ton is often a slang term for a hundred (eg in cricket) and so a ton has 2 zeros.
none
Eight tons = 16,000 pounds. 3 zeros.
There are four zeros in 10 tons.
5 zeros
15 zeros
41duodecillion is a 1 followed by 39 zeros
Eleven.
6 zeros 1,000,000
1,000,000 SIX ZEROS
100 zeros.
9 zeros