Exactly the same as you can without the hazmat. 11 hours, after which, you're required to take a ten hour break.
Yes. Even though some states make exemptions to CDL laws on private property (and even though it actually puts them in conflict with the federal law, hazmat is another matter. If you have a hazmat spill, the law will come down on you like a ton of bricks for not having a CDL and hazmat endorsement.
You MUST have a CDL in order to get a hazmat endorsement.
If you are a military service member in the course of their duties, no, but you must have gone through hazmat handler certification. A civilian contractor or DOD civilian would need a CDL and hazmat endorsement.
Yes. However, your chances of finding employment as a CDL driver with a felony conviction are slim, and you won't be eligible to receive a Hazmat endorsement.
No, unless it's hauling a quantity of hazardous materials which requires a hazmat endorsement.
If you have felony charges pending, or have been convicted of felony charges, then no - when you apply for a hazmat endorsement, you're subject to a TSA background check. You can get a CDL, but not the hazmat endorsement.
i have hazma
Once you get the hazmat endorsement, you have it for as long as you have a CDL. As for the CDL, it varies by state.
Not unless you're hauling something such as contaminated soil, which requires a hazmat endorsement.
A felony conviction will cause your hazmat endorsement to be rejected nationwide.
HME won't be seen on a CDL - the endorsement for hazmat on a CDL is H, or X if it's in conjunction with a tanker endorsement. HME is often used as a shortened form of "hazmat (or 'hazardous materials') endorsement".
Under federal law, 18, with an intrastate only restriction. 21 to drive interstate and/or get a hazmat endorsement. Some states won't allow anyone under 21 to have a CDL, though.