Question

Расставь коэфиценты в схемах реакций: Na+H2+SO4=Na2SO4+H2

Answer 1

У тебя какая-то неправильная реакция. Должно быть: 
2Na + H2SO4 = Na2SO4 + H2 
С высвобождением свободного водорода. Классическая реакция из 7 класса школы. 
А если ты написал правильный вариант, тогда 
8Na + 5H2SO4 = 4Na2SO4 + H2S + 4H2O 
Справа и слева одно и тоже.

Answer 2

Balanced Chemical Equation:

The balanced chemical equation for the reaction between sodium (Na), hydrogen gas (H2), and sulfuric acid (H2SO4) to form sodium sulfate (Na2SO4) and hydrogen gas (H2) is as follows:

2Na + 2H2SO4 → Na2SO4 + 2H2.

Please note that the coefficients in the balanced equation represent the stoichiometric ratios of the reactants and products. In this case, two moles of sodium react with two moles of sulfuric acid to produce one mole of sodium sulfate and two moles of hydrogen gas.

I hope this helps! Let me know if you have any further questions.