Please answer according to the kinetic theory of gases and conservation of momen

Question

Please answer according to the kinetic theory of gases and conservation of momentum: i. What happens to gas molecules when the gas gets hotter? ii. How fast do hydrogen 2*proton mass) and helium molecules4 times 4. iii. If you designed a nuclear rocket for NASA that could heat anything to 2000K iv How fast would your 5000 Kg rocket be travelling after expending its 10,000 Kg v. Would the rocket accelerate at a constant rate? proton mass) move when they are heated to 2000K? which gas would you use for your rocket propellant for maximum speed? of fuel?

Explanation / Answer

i)

All matter is made up of atoms and molecules that are constantly moving.

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Mass of the object remains the same, however. Solids, liquids and gases all expand when heat is added. When heat leaves all substances, the molecules vibrate slower. The atoms can get closer which results in the matter contracting. Again, the mass is not changed.

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