What is the relationship between the masses of oxygen and hydrogen?
The ratio of the mass of an oxygen atom to the mass of a hydrogen atom is therefore approximately 16:1. If we have 2 atoms of each element, the ratio of their masses is approximately 32:2, which reduces to 16:1—the same ratio.
What happens when hydrogen reacts with oxygen?
Hydrogen molecules violently react with oxygen when the existing molecular bonds break and new bonds are formed between oxygen and hydrogen atoms. As the products of the reaction are at a lower energy level than the reactants, the result is an explosive release of energy and the production of water.
Can you combine oxygen and hydrogen to make water?
Just mixing hydrogen and oxygen together doesn’t make water – to join them together you need energy. The trouble with adding energy into the equation is that a large-scale chemical reaction of flammable hydrogen and oxygen (which is what keeps a fire burning) is likely to result in a rather large explosion.
Can liquid hydrogen explode?
Even small amounts of liquid hydrogen can be explosive when combined with air, and only a small amount of energy is required to ignite it. Both its explosiveness and the extremely low temperatures involved make handling it safely a challenge.
Is hydrogen flammable or explosive?
PHYSICAL AND CHEMICAL PROPERTIES It is the lightest gas and is explosive in air at concentrations greater than about 4% (Lewis 1996). In contact with chlorine, oxygen, or other oxidizers, hydrogen is flammable and explosive and burns with a nearly invisible flame (Budavari et al. 1989).
What causes hydrogen to explode?
Hydrogen gas is very flammable. This is why the balloon filled with hydrogen ignites. The heat given off by the candle provides the activation energy required for the reaction that produces water from hydrogen and oxygen. This reaction is highly exothermic, producing the prodigious explosion.
What fuel does a bus use?
diesel fuel
How far can a bus go on a tank of gas?
On average, a clean-diesel school bus can travel about 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks.
How big is a bus fuel tank?
A modern double deck bus has a fuel capacity of 275 litres and Ad Blue capacity of 30 litres (taken from the Alexander Dennis E400 spec). Assuming a bus uses around 10mpg of fuel, the range would be around 600 miles.