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Tatiana [17]
2 years ago
5

What is the edge length of a 377-g iron cube? (The density of iron is 7.86 g/cm^3, and the volume of a cube is equal to the edge

length cubed.)
Chemistry
2 answers:
VashaNatasha [74]2 years ago
6 0

Answer:3.50 cm

Explanation:

ioda2 years ago
3 0

Answer:

3.63cm

Explanation:

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With 143.6 grams of acetylene and an excess amount of oxygen gas, what is the percent yeild of carbon dioxide if the actual yiel
nata0808 [166]

Answer:

93.28%

Explanation:

To solve the percent yield we need to find theoretical yield:

<em>Percent yield = Actual Yield (452.78g) / Theoretical yield * 100</em>

<em />

Theoretical yield is obtained converting the mass of acetylene to moles and using the balanced equation determine the moles of CO₂ produced assuming a 100% of reaction:

<em>Moles acetylene (Molar mass: 26.04g/mol)</em>

143.6g C₂H₂ * (1mol / 26.04g) = 5.515 moles C₂H₂

<em>Moles CO₂:</em>

5.515 moles C₂H₂ * (4 moles CO₂ / 2mol C₂H₂) = 11.029moles CO₂

<em>Mass CO₂ (Molar mass: 44.01g/mol):</em>

11.029moles CO₂  * (44.01g / mol) = 485.39g CO₂ is theoretical yield

Percent yield is:

Percent yield = 452.78g / 485.39g * 100

= 93.28%

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