Building code (which includes Plumbing) varies on a state or local government basis, but here in Illinois, it is code to have hot water on the left. Note that this includes rotary knob faucets, commonly found in showers. This has been written into construction codes for safety reasons, as water from a residential water heater can scald and burn skin. I can't speak for everywhere, but I strongly believe that this standard code has been enforced across the US.
the right side
Is the water not hot? Or no water coming out the hot tap? not comming out at all
No, never drink hot tap water, but cold tap water is actually really healthy for you!
hot filtered water
F, for frio (cold). Unfortunately, the hot water tap is marked C, for calor (hot), which could cause confusion. Fortunately, many taps use a color code as well : Red for hot water and Blue for cold water.
Hot water is simply water that is hot, regardless of where it comes from.
it depends how hot the water is
i think its because when you turn on the hot water tap the dirt in the tap has gone because the dirt loses the stickiness and hot water gets rids of stickiness
The water is probably frozen in the pipe
Most probably the "sediments" have settles to the bottom and as the hot water is taken off the top of the heater there will be none in the tap water. Hot water will contain less calcium and other impurities (they fall out and become those "sediments" but hot water may also dissolve other compounds from pipes. I use hot tap water in my coffee pot.
Never
You will digest it.