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Mazyrski [523]
2 years ago
10

The reduction of iron(III) oxide () to pure iron during the first step of steelmaking, ()()() is driven by the high-temperature

combustion of coke, a purified form of coal: ()()() Suppose at the temperature of a blast furnace the Gibbs free energies of formation of and are and , respectively. Calculate the maximum mass of pure iron that can be produced by the combustion of of coke. Round your answer to significant digits.
Chemistry
1 answer:
notsponge [240]2 years ago
5 0

Answer:

hello your question is incomplete attached below is the complete question

answer : To 2 significant digits = 5500 kg

Explanation:

Given

C(s) + O2 (g)  ----------> CO2  ( g )

mass of CO2 = 8.9 * 10^6 g

number of moles =  8.9 * 10^6 / 12  = 7.416 * 10 ^5  mol

same amount of moles is needed by O2 hence

attached below is the detailed  solution

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22. Radon has a half-life of 3.83 days. How long will it take a 225 g sample to decay to 14.06 g? (3pts.)
prohojiy [21]

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15.32 days

Explanation:

From the question given above, the following data were obtained:

Half-life (t½) = 3.83 days

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Amount remaining (N) = 14.06 g

Time (t) =.?

Next, we shall determine the number of half-lives that has elapsed. This can be obtained as follow:

Original amount (N₀) = 225 g

Amount remaining (N) = 14.06 g

Number of half-lives (n) =?

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Cross multiply

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Divide both side by 14.06

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2ⁿ = 2⁴

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Thus, 4 half-lives has elapsed.

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