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
A googol is 10 to the power of 100, and a googolplex is 10 to the power of a googol (or 10 to the power of 10^100). A googolplexian is 10 to the power of a googolplex, which is a number so large it's practically incomprehensible. The number of zeros in a googolplexian would be a 1 followed by a googolplex number of zeros.
41duodecillion is a 1 followed by 39 zeros
Eleven.
6 zeros 1,000,000
1,000,000 SIX ZEROS
100 zeros.