is it possible to use water for fuel,if you seperate the oxygen from the hydrogen?

How many grams of oxygen gas are required to produce 7.53 kJ of heat when hydrogen gas burns at constant press?

How many grams of oxygen gas are required to produce 7.53 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
2 H2(g) + O2(g) ? 2 H2O(g) ?H = ?484 kJ
Liquid water has a heat of vaporization of 44.0 kJ per mole at 25°C.

Could a person use a device that splits water like for hydrogen fuel cell car but keep oxygen for scuba diving?

I heard that this canadian invented a device that splits water into hydrogen and oxygen. Companies use this device to store hydrogen in tanks until it can be used for a hydrogen fuel cell car(like they do in iceland). My question is can you store the Oxygen instead to go on the ultimate scuba adventure? My dads a scientist, but we’re not talking right now so I thought I would ask here.

How many moles of hydrogen gas are needed to react with 0.50 mole of oxygen to form one mole of water?

How many moles of hydrogen gas are needed to react with 0.50 mole of oxygen to form one mole of water? 2H2(g) + O2(g) ® 2H2O(l)

How many liters of Water can be made from 5L of oxygen gas and an excess of hydrogen?

Using 2H2 + O2 –> 2H2O

Please explain!

Also this question:

How many liters of water can be made from 34 grams of oxygen gas and 6 grams of hydrogen gas at STP?

How Can hydrogen and oxygen be separated from water, so hydrogen can be used as a fuel?

It seems hydrogen is logical for use as a fuel on a water based planet, is why i ask ! And after hydrogen is used, can the residual recombine with oxygen to make water again?

When oxygen gas and hydrogen gas combine, they form water. What does this indicate about the properties of new?

When oxygen gas and hydrogen gas combine, they form water. What does this indicate about the properties of new compounds that are formed from different elements?

How many grams each of hydrogen gas and oxygen gas are required to produce 4.50 mol of water?

im new to chemistry and need help with this problem. please help

How many grams each of hydrogen gas and oxygen gas are required to produce 4.50 mol of water?

does a 1987 ford bronco have oxygen sensors and how can i disconnect it so i can run my truck on hydrogen?

i have a bronco and i want to get a water4gas hho gas maker for it so i can get better fuel mileage. but i dont want to throw it in and just end up using more gas when the oxygen sensors pick up the extra oxygen im putting in and tell my fuel compensators to pump more fuel, defeating the purpose of the HHO gas maker. if theres a way to put it in without needing to mess with anything else, that would be cool too.
UPDATE i know i make it sound like i want to completely run my bronco off of hydrogen, but i just want to save on gasoline by using less gas and mix what gas i use with hydrogen and oxygen to compensate for the saved gasoline.

If I have more oxygen going in to the engine will it burn more gas?

I have installed a hydrogen system in my pick up but have a no idea how the computer will figuire out that it is burning HHO and stop burning gasoline