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Feliz [49]
3 years ago
13

How many moles of Al will be consumed when 0.400 mol of Al2O3 are produced in

Chemistry
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

C) 0.800 mol

Explanation:

  • 4Al + 3O₂ → 2Al₂O₃

In order to <u>convert from moles of Al₂O₃ into moles of Al</u>, we'll need to use<em> the stoichiometric coefficients</em>, using a conversion factor that has Al₂O₃ moles in the denominator and Al moles in the numerator:

  • 0.400 mol Al₂O₃ * \frac{4molAl}{2molAl_2O_3} = 0.800 mol Al

So the correct answer is option C).

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3 years ago
How many moles are in 345g of Re
andre [41]

Answer:

The number of mole is 1.852moles

Explanation:

To calculate the number of mole, using the formula

n = m/Mm

n - number of mole

m - number of mass

Mm - number of molar mass

The molar mass of Re = 186.207

Then, n = 345g/ 186.207g/mol

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4 years ago
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Explanation: In IUPAC, E-Z convention is given for describing the cis - trans notation to the isomers. According to CIP rule, the groups on the doubly bonded carbon atoms are given priorities based on the the atomic masses of first connected atom.

If the highest priority groups are on the same side, it is known as Z-form and if the highest priority groups are on opposite side, it is known as E-form.

We are given (Z)-3-bromo-6-methyl-2-heptene, in this the highest priority groups are bromine on one side and methyl- group on another side.

The structure is provided in the image below.

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5 0
4 years ago
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