if it runs on pure hydrogen then the only exhaust will be pure water vapor.
Oh, dude, when hydrogen burns, it combines with oxygen to form water. Like, it's a super chill reaction where hydrogen and oxygen get together and have a little party, creating H2O as the end product. Oxygen's role is basically to be the life of the party and help hydrogen transform into water.
Two hydrogen molecules combine with one oxygen molecule to form two molecules of water. This is the combustion of hydrogen. The end product is water vapor. In the burning process, energy is released much the same way that gasoline burns in a car engine. Same process, different fuels. But in this case, there are no noxious byproducts of combustion - only water.
There is no molecular hydrogen (H2) naturally present in a cup of water. However, water molecules (H2O) contain two hydrogen atoms per molecule.
The end of the of the exhaust which has the most likely chance of coming into contact with the passenger will reach a temperature of up to 250 degrees c (482 f). Most exhaust pipes have shielding, to prevent accidental burns, but these too can get hot but to a much lesser degree (up to 60c).. source: "Case studies in contact burns caused by exhaust pipes of motorcycles" The part of the exhaust closest to the engine can get up to 400 degrees c (750 f), but is relatively hard to get to.
Each molecule of water contains one atom of oxygen and two atoms of hydrogen.
Water (H2O) would have much of the hydrogen and oxygen in the body.
One.
It depends on how much water you have!
It depends on the size of the glass of water. There is 1 gram of hydrogen in every 9 milliliters (.3 fluid ounces) of water.
The Sun burns approximately 600 million tons of hydrogen per second. This equates to about 4.3 billion tons of hydrogen burned in a single day.
With all of the interest floating around regarding hydrogen cars, people often find themselves wondering about the benefits of a hydrogen car over other forms of fuel. The major benefit of using a hydrogen car is simply: cleanliness. The hydrogen car is an extremely clean car that emits exhaust in the form of water vapor. This vapor contains no toxic pollutants, and is much better for the health of people and the environment.
In an electrolysis of water, hydrogen gas is produced in greater quantity compared to oxygen gas. This is because water molecules (H2O) consist of two hydrogen atoms and one oxygen atom, so the ratio of hydrogen to oxygen produced is 2:1.