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Nikolay [14]
3 years ago
5

For who does not know how to mark brainliest here's how

SAT
2 answers:
Contact [7]3 years ago
7 0

Answer:Ok, thx :)

Explanation:

tigry1 [53]3 years ago
4 0

Answer: Well... since you know how. I think you should mark me brainliest :)

Explanation:

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2. What do college admissions committees consider as the primary purpose of an official high
oksian1 [2.3K]

Answer:

What do college admissions committees consider as the primary purpose of an official high

school transcript?

Oto indicate the courses that an individual student has taken

Oto document a student's grades and grade point average

Oto show that college admission prerequisites were completed

O all of the above

3 0
3 years ago
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
Because of the difference between the discipline imposed by market competition and the discipline imposed by political decisions
andre [41]

Because of the difference between the discipline imposed by market competition and the discipline imposed by political decisions, there is bound to be A. difficulty managing public investment so it's done in a cost-effective way.

<h3>What is a competitive market?</h3>

This is s a structure in which no single consumer or producer has the power to influence the market

The characteristics of a competitive market are:

  • Homogeneity of product.
  • No existence of buyers or sellers.
  • Access to information.
  • No charge fr yranascation cost.
  • No barries to entry or exit.

Hence, because of the difference imposed by the market and political decisions, the government borrowing cannot be reduced neither will there be an increase in the tax budget nor will the government budget hide the rate of private investment.

Read more about<em> the market competition</em> here:

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#SPJ1

7 0
2 years ago
How did you arrive at the answer 495
BartSMP [9]

Answer:

what is the question bestie

Explanation:

4 0
2 years ago
Class midpoint for 59-65 is
Viefleur [7K]

the midpoint of 59 and 65 is 62

3 0
3 years ago
Read 2 more answers
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