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Gnom [1K]
4 years ago
6

1. How many atoms are there in 2.8 moles of carbon? You must show your work to receive credit.

Chemistry
2 answers:
Zolol [24]4 years ago
6 0

Answer:

The answer to your question is

1.-  1.686 x 10²⁴ atoms

2.- 0.25 moles

Explanation:

1.-

              1 mol ---------------- 6.023 x 10²³ atoms

             2.8 moles ----------  x

              x = (2.8 x 6.023 x 10²³) / 1

              x = 1.686 x 10²⁴ atoms

2.-           1 mol ------------------ 6.023 x 10 ²³ molecules

               x moles -------------  1.50 x 10²³ molecules

              x = (1.50 x 10²³ x 1) / 6.023 x 10²³

              x = 0.25 moles                                                      

babunello [35]4 years ago
4 0

Answer:

1.-  1.686 x 10²⁴ atoms

2.- 0.25 moles

Explanation:

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2FeCl3 + MgO -&gt; Fe2O3 + 3MgCl2<br> Convert 3.00 moles of MgO to moles of Fe2O3
nikitadnepr [17]

71.8 g of iron (III) oxide (Fe₂O₃) were produced from 3 moles of magnesium oxide (MgO).

Explanation:

We have the following chemical reaction:

2 FeCl₃ + 3 MgO → Fe₂O₃ + 3 MgCl₂

We see from the chemical reaction that 3 moles of magnesium oxide (MgO) will produce 1 mole of iron (III) oxide (Fe₂O₃).

number of moles = mass / molar weight

mass = number of moles × molar weight

mass of Fe₂O₃ = 1 × 71.8 = 71.8 g

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number of moles

brainly.com/question/13981579

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6 0
3 years ago
True or False: A heterozygous genotype produces the dominant phenotype because the dominant allele masks the recessive allele.
jasenka [17]
This is true! Heterozygous would be Dd, and the dominant masks the recessive
4 0
3 years ago
After you join and transfer electrons, what is the number of electrons you
Maurinko [17]

Answer:

2220/1110/

Explanation:

8 0
3 years ago
What are three main classifications of the elements
neonofarm [45]

Answer:

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Explanation:

4 0
3 years ago
What volume in litres will 38gr of F2 occupy at 0.999 bar and 273 K
Oliga [24]

Answer:

V=22.68L

Explanation:

Hello,

In this case, we use the ideal gas equation to compute the volume as shown below:

PV=nRT\\\\V=\frac{nRT}{P}

Nonetheless we are given mass, for that reason we must compute the moles of gaseous fluorine (molar mass: 38 g/mol) as shown below:

n=38 g *\frac{x}{y}  \frac{1mol}{38 g} =1mol

Thus, we compute the volume with the proper ideal gas constant, R:

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Best regards.

6 0
3 years ago
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