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labwork [276]
3 years ago
12

I’m just checking my answer. Thanks!

Chemistry
1 answer:
OLEGan [10]3 years ago
5 0

Answer:

78.89 g of CO is required.

Explanation:

Fe_{2}O_{3}+3CO\longrightarrow3CO_{2}+2Fe

Fe = 55.85 g/mol

O = 15.99 g/mol

C = 12.01 g/mol

2 moles of Fe is produced on reacting 1 mole of Fe_{2}O_{3}.

2 moles of Fe is produced on reacting 3 moles of CO.

Weight\:of\:one\:mole\:of\:Fe_{2}O_{3}=2\times55.85+3\times15.99=159.67g\\

Weight\:of\:one\:mole\:of\:CO=12.01+15.99=28g

The\:weight\:of\:two\:moles\:of\:Fe=2\times55.85=111.7g\\111.7g\:of\:Fe\:is\:produced\:by\:reacting\:(3\times28=)84g\:of\:CO\\\\104.9g\:of\:Fe\:is\:produced\:on\:reacting=\frac{84\times104.9}{111.7}=78.89g\:of\:CO\\

Hence, 78.89 g of CO on reacting with excess of ferric oxide will produce 104.9 g of Fe.

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Irina-Kira [14]

Hello!

To find the number of atoms in 2.822 moles of nickel, we need to multiply it by Avogadro's number. Avogadro's number is 6.02 x 10^23 atoms.

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3 years ago
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3 years ago
An electrochemical cell has the following standard cell notation: Al(s) | Al3+(aq) || Mg2+(aq) | Mg(s)
Soloha48 [4]

Answer:

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Explanation:

a. By the notation given, first is represented the oxidation reaction and then the reduction reaction, so they are:

Al(s) ⇄ Al⁺³(aq) + 3e⁻ (oxidation)

Mg²⁺(aq) + 2e⁻ ⇄ Mg(s) (reduction)

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5 0
3 years ago
At 338 mm hg and 72 c a sample of carbon monoxide gas occupies a volune of 0.225 L the gas transferred to a 1.50 L flask and the
Elis [28]

Answer:

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Explanation:

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