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 ^-^.
102 grams.
Equation:
Quantify of heat = mass x specific heat x difference in temperature
We have: quantity of heat : 2300J
specific heat: .449 J/g
difference in t: 80 - 30 = 50
Solve for mass: 2300 = mass x 0.449 x 50
mass = 102.449
2 sig-figs --> 102 grams
<span>179.35 mg of silver chloride is required to plate 135 mg of silver.
Create an expression showing what you know. Namely that 75.27% of X is equal to 135. So we get
75.27% X = 135
0.7527 X = 135
Now divide both sides by 0.7527
X = 135 mg / 0.7527 = 179.3543 mg
So it will take 179.35 mg of silver chloride to plate out 135 mg of pure silver.</span>
Answer:
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