KirMaloy

I calculated the combined weight of the hydrides above. I don't know what to do next. The total weight of hydrides is 8 grams. How to find out the mass of each hydride? LiH + NaH + 2H2O = LiOH + NaOH + 2H2 m(LiH+NaH) = (M(LiH) + M(NaH)) * m(H2) / 2M(H2) = (7.95 + 24) * 1 / 4 = 8 г.

I can write the reaction equations LiH + H2O = LiOH + H2 NaH + H2O = NaOH + H2 The weight of all substances after the reaction decreased by 1 gram. I understand that this is hydrogen Hydrogen has a total mass. How can I calculate the mass of hydrides? LiH + NaH + 2H2O = LiOH + NaOH + 2H2 m(LiH+NaH) = (M(LiH) + M(NaH)) * m(H2) / 2M(H2) = (7.95 + 24) * 1 / 4 = 8 г. How to find the mass of each hydride in a mixture?

A mixture of lithium and sodium hydrides reacted with 193 cm3 of water. The weight of the solution obtained by 1 gram is less than the sum of the masses of all starting compounds. Mass fraction in the percentage of alkalis in the solution amounted to 8%. Calculate the mass of the hydrides. I do not need a ready-made solution task. Tell me the way solution task. Where to start solving the task?