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It depends on what you are reacting the sodium with to generate hydrogen gas. The question is incomplete and cannot be answered as it is written

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Q: How many moles of Na are needed to make 4 moles of H2?
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How many moles of H2 are needed to produce 12.36 of NH3?

You can make a simple balance. There are (12.36 * 3) moles of H You have 2*H to form H2. So take the total from ammonia and divide by two to find the moles of H2 required.


How do you find if you have 14.5 moles of N2 how many moles of H2 are theoretically needed to produce 22.5 moles of NH3 according to the reaction N2 plus 3H2 2NH3?

N2 + 3H2 -> 2NH3 If you have moles produced you can do it this way. 22.5 moles NH3 (3 moles H2/2 moles NH3) = 33.8 moles H2 needed -----------------------------------


How many moles of H2 are needed to react with 0.90?

6moles of hydrogen


How many grams of hydrogen are needed to produce 30.0 grams of water?

The synthesis reaction is 2 H2 + O2 = 2 H2O. Every two moles of hydrogen reacts with one mole of oxygen to make two moles of water. Then 30.0 grams of water is 1.67 moles, and 1.67 moles of H2 has a mass of 3.37 grams. 25.0 grams of O2 is .781 moles, so 1.562 moles of H2 are needed, or 3.15 grams.


How many moles K are needed to react with 15 moles of Cl2?

H2 +Cl2---------------->2HCl Since H2 and Cl2 react in 1:1 mole ratio the number of moles of H2 reacting is equal to the number of moles of Cl2 which is equal to 0.213


How many grams of H2 are needed to reduce 5.51 moles of CuO in the reaction?

11 g hydrogen are needed.


How many moles of nitrogen and hydrogen are needed to get 10 moles of ammonia?

The reaction of nitrogen with hydrogen to form ammonia is: N2 +3H2 = 2NH3 Therefore to make 10 moles of ammonia you need 5 moles N2 and 15 moles H2


How many moles of HCl and needed to react 2.4 moles of Al?

Al+HCl===> AlCl3+H2 Is the reaction. You need &.2 moles of HCl.


How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 30.6 moles of water vapor?

CO2 + H2 -> CO + H2O one to one here 30.6 moles H2O (1 mole H2/1 mole H2O) = 30.6 moles Hydrogen gas needed


How many moles of H2are needed to react with 0.90moles N2?

I assume you mean this reaction. N2 + 3H2 --> 2NH3 0.90 moles N2 (3 moles H2/1 mole N2) = 2.7 moles hydrogen gas needed =====================


How many moles of NH3 are produced when 1.4 moles H2 reacts?

Balanced equation. N2 + 3H2 --> 2NH3 1.4 moles H2 (2 moles NH3/3 moles H2) = 0.93 moles NH3 produced =======================


How many moles of water are needed to react with 2.5 moles of sodium?

Na + 2H2O -----> H2 + NaOH If you have 2.5 moles water you need 1.25 mol elemental sodium