How many moles of hydrogen gas are produced when 0.066 moles of sodium is completely reacted?

2Na + 2H2O —> 2NaOH + H2

How many moles of hydrogen gas are produced when 0.066 moles of sodium is completely reacted?

How do you figure this problem out and what is the formula?

What is the minimum amount of hydrogen gas required to completely hydrogenate 13000 grams of 2-butene?

What is the minimum amount of hydrogen gas required to completely hydrogenate 13000 grams of 2-butene?

I’m guessing the 2-butene is CH3-CH=CH-CH3, but I don’t know what else to do to help me solve this.
Could someone help me out with additional steps, please?

Thank you in advance!

Is There A Car Which Works Completely Using Water As Fuel?

There is really the need for a car which could works completely using water. I wanted to know if exists already & if yes, what make an model.
Thx