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Tema [17]
3 years ago
10

Doy todos mis puntos si me ayudan D: Realizen un guion teatral del oso terco

SAT
1 answer:
Sophie [7]3 years ago
6 0

bet you can't relate Explanation: Most of the people in Latin America are employed by the oil industry. Most of the people in Latin America are employed by the oil industry.  Searching for alternative fuel sources is no longer necessary. Searching for alternative fuel sources is no longer necessary.  The Middle East accounts for less than half the world's oil reserves. The Middle East accounts for less than half the world's oil reserves.  The former Soviet Union and Eastern Europe have fewer years of oil reserves available than Africa does.

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Determine the empirical formula of a compound containing 47. 37 grams of carbon, 10. 59 grams of hydrogen, and 42. 04 grams of o
Effectus [21]

Considering the definition of empirical formula, the empirical formula is C₃H₈O₂ and the molecular formula is C₉H₂₄O₆.

<h3>Definition of empirical formula</h3>

The empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms, that is, the subscripts of chemical formulas are reduced to the most integers. small as possible.

<h3>Empirical formula in this case</h3>

In this case, you have:

  • Carbon (C): 47.37 grams
  • Hydrogen (H): 10.59 grams
  • Oxygen (O):  42.04 grams

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

  • Carbon (C): \frac{47.37 grams}{12 \frac{g}{mole} }= 3.95 moles
  • Hydrogen (H): \frac{10.59 grams}{1 \frac{g}{mole} }= 10.59 moles
  • Oxygen (O):  \frac{42.04 grams}{16 \frac{g}{mole} }= 2.63 moles

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

  • Carbon (C): \frac{3.95 moles}{2.63 moles }= 1.5
  • Hydrogen (H): \frac{10.59 moles}{2.63 moles }= 4
  • Oxygen (O):  \frac{2.63 moles}{2.63 moles }= 1

Finally, since in the empirical formula the numbers of moles must be expressed in whole numbers, the ratio of atoms is multiplied by some number with which everything is obtained in simple whole numbers (in this case by 2):

  • Carbon (C): 1.5× 2= 3
  • Hydrogen (H): 4× 2= 8
  • Oxygen (O):  1× 2= 2

Therefore the C: H: O mole ratio is 3: 8: 2

Finally, the empirical formula is C₃H₈O₂.

<h3>Molecular formula</h3>

To obtain the molecular formula you must relate its molecular weight (PMc) with the molecular weight of the empirical formula (PMfe).

PMfe= PM (C₃H₈O₂)= 76 g/mole

The molar mass of the compound (PMc) was determined to be 228.276 g/mol. Dividing this mass PMc by the molar mass of the empirical formula PMfe gives:

228.276 g/mol ÷ 76 g/mole= 3

This means that in the molecular formula there are 3 unit formulas (empirical formulas), so it is necessary to multiply the number of all atoms by 3.

Then, the molecular formula is C₉H₂₄O₆.

Learn more about empirical formula:

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3 0
2 years ago
My points be looking like phone numbers, if i got em, then youll want em, more points comin your way, u be makin more from meh.
Mama L [17]

Answer:

Lol Thank you so much youre an awesome person :)

Explanation:

4 0
3 years ago
Elementary linear algebra 11th edition chapter 1 solutions
jenyasd209 [6]

An example of Elementary linear algebra 11th edition is given in the image attached.

<h3>What is elementary linear algebra?</h3>

Linear algebra is known to be  a part of math work. It is known to be the most easiest form of upper-level math works example is  abstract algebra.

Conclusively, using the image attached, the answer will be (x1, x2) = (–8, 3)

Learn more about algebra  from

brainly.com/question/432678

3 0
2 years ago
In a few sentences, describe how sedimentary rock forms.
photoshop1234 [79]

answer:

sedimentary rock is formed when rocks start to weather away causing them to loosen. **weathering is the breaking down of rocks, soils, minerals, and artificial materials through contact with water, atmospheric gases, and biological organisms.** sedimentary rocks are formed from older rocks. the pieces of broken rocks are then transported (through water.) and over time the layers will become compacted (salt crystals 'glue' the layers together.)

good luck :)

i hope this helps

have a nice day!

3 0
3 years ago
Self-testing is an effective strategy to
eimsori [14]

Answer:

A. review information you have already read

3 0
3 years ago
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