Answer: <u>Hydrogen.</u>
Explanation: <u>One problem with fuel-cell cars is that hydrogen gas is not readily available in pure form.</u> Fuel cell vehicles use hydrogen gas to power an electric motor. Unlike conventional vehicles which run on gasoline or diesel, fuel cell cars and trucks combine hydrogen and oxygen to produce electricity, which runs a motor. Hope this helps ^-^.
B. Shredding
Shredding is the only answer that has a physical change in a material, the rest are only chemical changes
hope this helps!
Answer:
Explanation:
mole of O₂ = ![\frac{8}{32}](https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7B32%7D)
= .25 moles
mole of CO₂
= ![\frac{8}{44}](https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7B44%7D)
= .1818 moles
moles of SO₂
![\frac{8}{64}](https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7B64%7D)
= .125 moles
Total moles of gas
= .5568 moles.
total volume of gas mixture
= 22.4 x .5568 liter ( volume of one mole of any gas = 22.4 liter)
= 12.47 liter.
gas will exert partial pressure according to their mole fraction
gas having greatest no of moles in the total mole will have greatest mole fraction so
O₂ will have greatest partial pressure.