Considering the definition of empirical formula, the empirical formula is C₃H₈O₂ and the molecular formula is C₉H₂₄O₆.
Definition of empirical formulaThe 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.
Empirical formula in this caseIn this case, you have:
Carbon (C): 47.37 gramsHydrogen (H): 10.59 gramsOxygen (O): 42.04 gramsThen it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:
Carbon (C): [tex]\frac{47.37 grams}{12 \frac{g}{mole} }[/tex]= 3.95 molesHydrogen (H): [tex]\frac{10.59 grams}{1 \frac{g}{mole} }[/tex]= 10.59 molesOxygen (O): [tex]\frac{42.04 grams}{16 \frac{g}{mole} }[/tex]= 2.63 molesThe 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): [tex]\frac{3.95 moles}{2.63 moles }[/tex]= 1.5Hydrogen (H): [tex]\frac{10.59 moles}{2.63 moles }[/tex]= 4Oxygen (O): [tex]\frac{2.63 moles}{2.63 moles }[/tex]= 1Finally, 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= 3Hydrogen (H): 4× 2= 8Oxygen (O): 1× 2= 2Therefore the C: H: O mole ratio is 3: 8: 2
Finally, the empirical formula is C₃H₈O₂.
Molecular formulaTo 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.
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Suppose you are standing in the middle of the platform
The question is about the angle of depression (see full question below). Please note that the correct answer, that is, the angle of depression from the platform to the center of the bridge, is 16.6⁰.
What is the solution for the Angle of Depression above?
Step 1
Recall that the bottom of the rectangle has the same dimensions as the top.
Therefore,
tan = [tex]\frac{opposite}{adjacent}[/tex]
Thus, tan x = 297/995
Step 2 - We locate or calculate the inverse tangent of both sides. This results in:
x = tan⁻¹ ([tex]\frac{297}{995}[/tex])
Hence, x = 16.6⁰ approximately.
The full question is given here:
Suppose you are standing in the middle of the platform of the world's longest suspension bridge, the Akashi Kaikyo Bridge. If the height from the top of the platform holding the suspension cables is 297 meters, and the length from the platform to the center of the bridge is 995 meters, what is the angle of depression from the platform to the center of the bridge?
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south american country that hosted the first fifa world cup
Answer:
URUGUAY
Explanation:
A croissant shop has plain croissants cherry croissants chocolate croissants almond croissants apple
Answer:
What Is a Mutual Savings Bank (MSB)?
A mutual savings bank is a type of thrift institution originally designed to serve low-income individuals. Historically, these individuals invested in long-term, fixed-rate assets, such as mortgages.
Explanation:
The perimeter of sophia's garden is 42 m the garden is 6 m wide what is the length of the garden
Answer:
30?
Explanation:
thats if it is a rectangle
A new car is purchased for 22300 dollars. The value of the car depreciates at 10. 25% per year. What will the value of the car be, to the nearest cent, after 6 years?
Answer:
8,585.5
Explanation:
first you multiply 22300 by 10.25% thats the number at which it decreases every year, then multiply by 6, then subtract that from 22300
Does a geometric series always have a finite value?
Answer:
Yes.
Explanation:
A geometric series has a finite value only when the common ratio, r, is – 1. What is the sum of infinite series? An infinite series has an infinite number of terms. The sum of the first n terms, Sn, is called a partial sum.
A new suv depreciates in value each year by a factor of 15
The expected value of a car worth $25,000 after 5 years will equals to $11,093.
What is the formula for compound interest?[tex]A = P (1 + r/n)^ni[/tex] where p = $25,000, r= 0.15, i = 1, i = 5
A = 25000* (1 + -0.15/1)^5*1
A = 25000*(0.85)^5
A = 25000*0.4437053125
A = 11092.6328125
A = $11,093
Hence, the expected value of a car worth $25,000 after 5 years will equals to $11,093.
Therefore, the Option B is correct.
Full question "What is the expected value of a $25,000 car after 5 years (rounded to nearest whole dollar)? A) $20750 B) $11093 C) $9429 D) $6250?
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If 45 ml of water are added to 250 ml of a 0. 75 m k2so4 solution, what will the molarity of the diluted solution be?
Answer:
0.64M
Explanation:
6-5 additional practice properties of special parallelograms
The properties of parallelograms are contained below:
They have opposite sides which are congruent to each other. BC = EDThey have Opposite angles which are congruent also.Consecutive angles are known to sum up to 180 degrees. They are supplementary.If an angle is right, all other angles are right.The diagonals are said to bisect each other.What is a parallelogram?This is a shape that is known to have four sides. Each of the sides is parallel to the side that is oppositev it.
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The size of a tv screen is given by the length of its diagonal
What are the domain and range of f (x) = log (x minus 1) + 2?
[tex]log(x - 1) + 2[/tex]
Domain:The condition of log functions, is to set what's in between the brackets as being strictly greater than 0.[tex]x - 1 > 0[/tex]
[tex]x > 1[/tex]
Domain:[tex]1 < x < \infty [/tex]
Range:The range of log functions is all real numbers:[tex] - \infty < f(x) < \infty [/tex]
Algebra 2 volume 2 houghton mifflin harcourt answers pdf
Algebra is a way we solve mathematical equations and the solution to the Algebra 2 in volume 2 exercise in the Hughton Mifflin pdf is 6.
What is algebra?Algebra is a field of mathematics that aids in the presentation of word problems using mathematical expressions.
To construct a meaningful mathematical expression, variables (e.g. a,b, and c, etc) are combined with mathematical operations such as addition, subtraction, division, and multiplication.
From Algebra 2 volume 2 Mathematics: Chapter 12, Excercise 6, we have:
Find f(3) in f(x) = 0.75(2)ˣWe will replace x with (3) wherever we find (x)
So, f(3) = 0.75(2)³f(3) = 0.75(8)f(3) = 6Learn more about algebra here:
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Consider a buffer made by adding 132.8 g of nac₇h₅o₂ to 300.0 ml of 2.31 m hc₇h₅o₂ (ka = 6.3 x 10⁻⁵) what is the ph of the buffer after 0.750 mol of h⁺ have been added?
The ph of the buffer solution given after 0.750 mol of H⁺ have been added is; 4.34
What is the PH of the Buffer?pKa = -log(Ka) = 4.20
[A⁻] = [NaC₇H₅O₂]
[HA] = [HC₇H₅O₂]
Concentration of NaC₇H₅O₂ in the preferred buffer solution is;
[132.8g/(144.11 g/mol * 300 mol)] * 1000 mL/1 L = 3.07 M
Formula for the PH here is;
pH = pKa + log [A⁻/HA]
Thus;
pH = -log(6.3 x 10⁻⁵) + log [3.07/2.31]
pH = 4.34
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If a circle is circumscribed about a polygon, then the polygon is
A circle is circumscribed about a polygon if the polygon's vertices are on the circle. For triangles, the center of this circle is the circumcenter. A circle is inscribed a polygon if the sides of the polygon are tangential to the circle. For triangles, the center of this circle is the incenter.
hope this helps
6-4 practice elimination using multiplication answers
Multiplication as a method of elimination is used to eliminate an unknown in a system of equations by multiplying one of the equations by a constant.
What is the Gauss method?It is the method of eliminating unknowns that transforms a linear system into a triangular system, so that it is possible to solve the problem with retroactive resolution. Like for example:
2x+3y=143x-4y=4A) The first step is to solve equation 2 to find the variable x.
3x=4y+4x=4y/3+4/3B) The second step is to include the variable x found in equation 1.
2x(4y/3+4/3)+3y=14
17y/3=34/3
17y=34
C) The third step is to solve equation 1 to find the variable y.
17y=34y=2D)Now that we've found the value of y, we can solve equation 1 to find the value of x.
x=4/3x(2)+4/3=4Therefore, if the value of x is 4 and the value of y is 2, the solution of this exercise, using the Gauss method is (4;2).
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If a+b=-8 and a + b = 50, what is the
a
value of ab?
Answer:
sorry is that question correct pls
the growth of squatter settlements within urban areas in latin america, as shown in the photograph, can be explained by rapid migration to cities and the
The growth of squatter settlements within urban areas in Latin America can be explained by rapid migration to cities and the lack of suitable regulations.
What is an informal settlement?An informal settlement is an illegal occupation of public and/or private areas by people who generally do not have a proper home to live in.
The uncontrolled proliferation of illegal settlements is due to the lack of public policies aimed at regulating this type of occupation.
The lack of homes is a real problem in many countries around the world, especially in Latin America.
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Which of the statements describes that a quadrilateral is a parallelogram
I don't see the choices, but I will give you some definitions which can hopefully help you
Definition of Parallelogram: a quadrilateral that has two pairs of opposite sides are parallel
Hope that helps!
17.1 equation of a circle evaluate homework and practice answer key
The evaluation using the equation of circle for the practice question is (x - 4)² + (y + 11)² = 256
What is the equation of the Circle Distance Formula?With respect to the distance formula, a point location in space (x,y) at a distance (r) from the origin is valid if [tex]\mathbf{\sqrt{x^2 + y^2} = r}[/tex]. Hence this refers to the equation of the circle centered at the origin.
For Conic Sections:
[tex]\mathbf{(x-h)^2 (y-k)^2 = r }[/tex]where;
center = (h,k)radius = rLet's assume we have a circle with C(4,-11) and radius r = 16;
Then, we have:
(x-h)² +(y -k)² = r²
(x-4)² + (y - (-11))² = 16²
(x - 4)² + (y + 11)² = 256
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Select one issue in our society today how do you apply methods of philosophizing
Answer:
We can apply the method of philosophizing known as "logic and critical thinking" to interpret and determine a truth about racism in our society.
Explanation:
Logic and critical thinking, assesses assumptions and elements of a given problem in society and through the investigation of facts and evidence about that problem it is able to determine whether there is a truth about it and whether we should follow it or not. This method of philosophizing is one of the most ideal and adaptable in our modern society because it uses rationality through evidence and hard facts.
This method can be used to discover truths about racism in our society. Through it we can analyze the origins of racism, how it accompanied the formation of American society and how to conclude from this whether it is still influential and strong today. Critical thinking will show us that racism is still influential as it will show various truths about it and its establishment in modern society.
Which quotations show foreshadowing? check all that apply. ""if you don’t want it . . . give it to me."" ""i threw it on the fire."" ""don’t blame me for what happens."" ""hold it up in your right hand."" ""i warn you of the consequences.""
Answer:
"Don't blame me for what happens"
"I warn you of the consequences"
Explanation:
Hope it helps
Follow the directions to convert the analog sound wave into a digital signal. the lines on the grid intersect at various points (x, y). for each whole-number value of x, find the intersection point that is closest to the wave. draw a small circle on that point, and record its y-value. the circles for the x-values 0 through 3 are already done for you. draw circles for the x-values 4 through 18. in a textbox, write down all 19 y-values obtained by sampling the wave.
In this exercise we have to observe the axes of the graph to associate the values of X with those of Y that correspond to 0, 5, 5, -3, -5, -3, 2, 0, 0, -1, -2, 1, 1, -1, -1, -2, 2, 3, -1.
How to calculate the Cartesian plane?Just draw two lines: one of them vertical, starting from the point until it finds the x axis; another horizontal, starting from the point until it meets the y-axis.
Then plotting the value of X on the graph we find the following for each value of X to Y:
X= 0 ; Y= 0; X= 1 ; Y= 5; X= 2 ; Y= 5;X= 3 ; Y= -3;X= 4 ; Y= -5;X= 5 ; Y= -3;X= 6 ; Y= 2; X= 7 ; Y= 0; X= 8 ; Y= 0; X= 9 ; Y= -1; X= 10 ; Y= -2; X= 11 ; Y= 1; X= 12 ; Y= 1; X= 13 ; Y= -1;X= 14 ; Y= -1; X= 15 ; Y= -2; X= 16 ; Y= 2; X= 17 ; Y= 3; X= 18 ; Y= -1;See more about coordinates at brainly.com/question/23450276
A(n) ________ is a coherent set of interdependent processes and structures that dictates how the company searches for novel problems and solutions, synthesizes ideas into a business concept and product designs, and selects which projects get funded
Based on business analysis, an innovation system is a coherent set of interdependent processes and structures that dictates how the company searches for novel problems and solutions.
What is innovation systems?Innovative systems is a process that break ideas into a business concept and product designs and then select which projects get funded.
Innovation system comprises components like:
TechnologyEnterprisesInformationPeopleInstitutionHence, innovation systems is a coherent set of interdependent processes and structures that dictates how the company searches for novel problems and solutions.
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Fill in the blank with the comparative form of the underlined modifier
Answer:
The following are the answers for each questions:
1. It was worse than the movie we saw last week
2. Felipe showed much concern about the poor quality of the movie.
Belinda showed even more concern than Felipe
3. A lot of movies are filmed in New York
Explanation:
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Compare and contrast how the elements are used in the different genres this hybrid uses metric formats to tell a true story.
The way elements are used in the different genres is that Genre as it s made up 4 elements such as character, story, plot and setting, they are said to be mixed up together.
They can be mixed up as Story (Action) + Plot + Character + Setting = Genre. Some other kinds of genres are crime, war, spy, adventure, etc.
Note that a lot of genres or forms of literature often depicts themes or topics in a different way.
To Compare and Contrast genre, one must shows what is similar and what is different about the genre in question. Knowing how the genres are alike and difference can helps a person to have a better study of genre.
What is the differences in the use of genre/A lot of sub-genres of comedy are known to be different from one another when one looks at the fluctuations in terms of the characters and the story.
The Characteristics of Genre are:
Form: This shows one how a writer makes, structures, and put together a written work. Style: This is known to be a method used by writer in terms of words and language to pass out meaning, mood, etc.Subject: This is known to be the main topic the genre is based on, etc.Learn more about genres from
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Why should Christians fight against spread of devil worship in the society
Christians fight against spread of devil worship because they believed the devil is the one who makes people to do bad/evil thing and when he is worshipped, the devil will have more power to oppress and control people.
What is devil worship?Theistic Satanism is known to be a Religious belief that is often called religious Satanism, spiritual Satanism, etc.
It is known as the body of people or groups that sees Satan to be an their god and as such the bible states that the work of Satan is to do evil and separate man from God. Christians are against the worship of a being who leads others to eternal doom and to do evil.
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Based on the context clues, what is the meaning of the word maritime in the passage? bordering the sea; nautical over-scheduled characterized by calm; restful accurate or specific
The meaning of the word maritime in the passage based on the context clues is: Bordering the sea; nautical.
What are context clues?Context clues are defined as hints that are seen within a paragraph or passage of a text which aids the reader in understanding certain words or events taking place in the text. Thus, context clues will help the readers to fully grasp what the text is all about.
Finally, in the given passage we see that the word "maritime" is based on the context clues that means bordering the sea; nautica
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Answer:
A - Bordering the sea; nautical
Explanation:
>.<
A customer opened a file attachment and now her pc is infected with ransomware
The action that one should do first is to Disconnect the PC from the network.
What do one do in case of ransomware?When a person is attacked by this worm, experts has stated that the right thing to do is to quickly disconnect the computer from the network.
One can do so by turning off Wi-Fi. Then one can use another device to make an online search to see the kind of ransomware that has been used on your system.
See full question below
A customer opened a file attachment, and now her PC is infected with ransomware. She's unable to open any of her files. Which action would you take first?
A. Reinstall the operating system
B. Run an antivirus scan
C. Pay the ransom to recover the data
D. Disconnect the PC from the network
E. Restore files from backup
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4. 1 1 describe two ways how social media platforms are abused
Hi, here are the ways social media platform are abused:
Sends you unwanted, explicit pictures and demands you send some in return. Pressures you to send explicit videos.
Hope this helps! Please correct me if I am wrong.
10.1 inverses of simple quadratic and cubic functions answers
The inverses of simple quadratic and cubic functions are known to be a form of inverse relationship where one variable is said to increase while the other decreases.
What is the simplest quadratic relation?A quadratic equation is known to be a type of an equation that belongs to the second degree. It implies that it has at least one term that is often squared.
Recur that an an inverse relationship consist of a variable that is known to often increases the other variable is one that often decreases.
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