Question

ДАЮ 50 БАЛЛОВ каким из приведённых в таблице газов следует наполнить шарик с практически невесомой оболочкой,чтобы он оказался существенно легче воздуха и смог взлететь?(средняя молярная масса воздуха равно 29 г/моль) укажите номер вещества (ВОДОРОД,ФОСФИН,УГЛЕКИСЛЫЙ ГАЗ)

Answer 1

Ответ:

Только водород (H2). Так как молярная масса водорода равна 2, а фосфина (РН3)-- 34, а углекислого газа (СО2)-- 44

29 > 2

29 < 34

29 < 44

Answer 2

The gas that should be used to fill the balloon with a practically weightless shell to make it significantly lighter than air and enable it to float is hydrogen (H2).

To determine the gas that should be used, we need to consider the molar mass of the gases listed in the table and compare them to the molar mass of air, which is given as 29 g/mol.

The molar mass of hydrogen (H2) is approximately 2 g/mol, which is significantly lighter than air. This means that a balloon filled with hydrogen gas will be lighter than the surrounding air and will be able to float.

On the other hand, the molar mass of phosphine (PH3) is approximately 34 g/mol, and the molar mass of carbon dioxide (CO2) is approximately 44 g/mol. Both of these gases are heavier than air and would not make the balloon lighter.

Therefore, the gas that should be used to fill the balloon with a practically weightless shell is hydrogen (H2).

Please note that when handling hydrogen gas, safety precautions should be taken as it is highly flammable.