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 much hydrogen (gas and/or liquid) could an oil tanker covered in solar panels produce in a day?

if you take one of those big enormous oil tankers that they have today, and convert it and cover it with solar panels and park it on the equator, how much gas hydrogen could it produce in one reguarl sunny day? and how much liquid hydrogen could it produce?
thanks for the info Ecko, i was really thinking of the feasibility of a hydrogen powered commercial airplane that could travel from LA to Miami. not really cost effective, but green energy is not about making a profit, just being sustainable and beneficial

What volume of hydrogen gas will be generated?

What volume (in L) of hydrogen gas (at 25oC, 1 atmospheric pressure) will be generated by the reaction of 568 mL of 0.5 M hydrochloric acid with 30.00 g of magnesium metal?

What type of compound is formed when a ketone is reduced with hydrogen gas?

What type of compound is formed when a ketone is reduced with hydrogen gas?
Answer a primary alcohol
a secondary alcohol
a tertiary alcohol
an acetal

Why does my water in my hydrogen fuel cell turn to a weird color?

When I turn on my hydrogen fuel cell or HHO fuel cell and it runs for a little bit, the water starts to turn like yellowish brownish. And it starts to form bubbles on the top of the water that turn really dark brown or black. What kind of water do I need to use and if I need to mix something in with the water, what is it?
Thanks Dave I didn’t want to mention that i was using tap water because I wanted to see if someone would state that could be the problem, but when i use distilled water do I need to mix anything in with it. Or can I for better results?

When solid sodium is added to liquid water, it reacts with the water to produce hydrogen gas and aqueous?

When solid sodium is added to liquid water, it reacts with the water to produce hydrogen gas and aqueous sodium hydroxide.Write a balanced chemical equation for this reaction.

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?

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Product Description
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HHO Hydrogen Fuel KIT – Complete w/ MAP Sensor