When you speak my name I no longer exist, what am I?

I'm as light as a feather, but the world's strongest men cannot hold me for much more than a minute, what am I?

I'm where eight comes before seven

How many animals in total did moses take on the ark?

There was a blind beggar who had a brother but his brother had no brother of his own... how is this possible?

The first is silence I think and I think the last one is he was adopted but the other 3 I can't figure out... tell me!

Silence?

I don't know, I can think of lots of things, water, air, a very poisonous feather?

A dictionary?

Moses? Moses never owned an ark

The beggar was female? Edit: nope. Hmmm don't know the last one.

Yeah silence because its broked if you actually say silence because by saying it you are causing sound ceasing t to exist... if that makes any sense

when you speak my name I no longer exist, what am I?
Silence


I'm as light as a feather, but the world's strongest men cannot hold me for much more than a minute, what am I?
One's breath


I'm where eight comes before seven
This one you got me on!


how many animals in total did moses take on the ark?
None (Noah, not Moses, took the animals on the ark)


there was a blind beggar who had a brother but his brother had no brother of his own... how is this possible?
The beggar was a woman (and therefore was the brother's sister)

s_cianci, in the last riddle, it says HIS brother, so the beggar can't be female..

That one has me stumped :)