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3 years ago

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Which equivalence factor should you use to convert from 3.48 x 1018 atoms of magnesium (Mg) to moles of magnesium? A (1 mol Mg/1

atom Mg) B (1 mol Mg/3.48 x 1018 atoms Mg) C (1 mol Mg/6.02 x 1023 atoms Mg) D (6.02 x 1023 atoms Mg/1 mol Mg)

1 answer:

faltersainse [42]3 years ago

6 0

1242.375Mg=1976Mg located

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Basilosaurus cetoides was a large mammal that existed 35 million years ago. It was 20 m long and had a large skull, incompletely

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Answer: hey so I’m taking the same test as you right now. I’m on that question and I searched it up and came on here. Would you mind telling me the answer?

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3 years ago

Question 2Classify the following organic structures:CH3OCH3CH2CH2CHCH2CH3CH3NHCH3CH3CH(OH)CH₂CH3

Naily [24]

Within the options, we have four organic compounds. Let's see what the skeletal structure of the compounds is in order to identify them better:

The first compound CH3OCH3 has two methyl groups linked by a carbon atom, this type of compound is called an Ether

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Answer:

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1 year ago

A candle slowly burns until the last bit of wax and wick are gone. The two reactants in this chemical reaction are the wick and

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The component of the candle burning in the surrounding has been the oxygen in the air.

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3 years ago

Select the electron-domain geometry for a molecule with three bonding domains and one nonbonding domain.

mamaluj [8]

Answer: C) Tetrahedral

Explanation:

The number of electron pairs is 4 that means the hybridization will be $sp^3$ but as there are three bonding domains and one nonbonding domain, thus electronic geometry is tetrahedral and the molecular geometry will be trigonal pyramidal.

Linear electron geometry is possible when number of electron pairs is 2 and the hybridization will be $sp^2$ .

Trigonal planar geometry is possible when number of electron pairs is 3 and the hybridization will be $sp^3$ .

Trigonal bipyramidal geometry is possible when number of electron pairs is 5 and the hybridization will be $sp^3d$ .

Octahedral geometry is possible when number of electron pairs is 6 and the hybridization will be $sp^3d^2$ .

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3 years ago

Fe2O3 + CO --> Fe + CO2

satela [25.4K]

Answer:

The answer to your question is

1.-Fe₂O₃

2.- 280 g

3.- 330 g

Explanation:

Data

mass of CO = 224 g

mass of Fe₂O₃ = 400 g

mass of Fe = ?

mass of CO₂

Balanced chemical reaction

Fe₂O₃ + 3CO ⇒ 2Fe + 3CO₂

1.- Calculate the molar mass of Fe₂O₃ and CO

Fe₂O₃ = (56 x 2) + (16 x 3) = 160 g

CO = 12 + 16 = 28 g

2.- Calculate the proportions

theoretical proportion Fe₂O₃ /3CO = 160/84 = 1.90

experimental proportion Fe₂O₃ / CO = 400/224 = 1.78

As the experimental proportion is lower than the theoretical, we conclude that the Fe₂O₃ is the limiting reactant.

3.- 160 g of Fe₂O₃ --------------- 2(56) g of Fe

400 g of Fe₂O₃ --------------- x

x = (400 x 112) / 160

x = 280 g of Fe

4.- 160 g of Fe₂O₃ --------------- 3(44) g of CO₂

400 g of Fe₂O₃ -------------- x

x = (400 x 132)/160

x = 330 gr

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3 years ago