What are likely formulas for the following molecules?
A) NH?OH.
B) AlCl?.
C) CF2Cl?.
D) CH?O.

Answers

Answer 1

Answer:

a

Explanation:

a the answers you welcome

Answer 2

The likely formulas for the molecules are NH₄OH, AlCl₃, CF₂Cl₂, CH₃O.

What is molecule ?

According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds.

A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all the substance's physical and chemical properties. Further atom division occurs within molecules. For instance, the symbols for the oxygen atom and molecule are O and O2, respectively.

The smallest identifiable unit into which a pure substance may be divided while retaining its composition and chemical properties is a molecule, which is a collection of two or more atoms.

Thus, The likely formulas for the molecules are NH₄OH, AlCl₃, CF₂Cl₂, CH₃O.

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Related Questions

Fatty acids and glycerol are the subunits of the energy storage molecules called

Answers

Answer:

true fats; triglycerides

Explanation:

Round off the following numbers to the number of significant figures (sf) indicated.
a. 7.524 to 3 sf ______
b. 16.465 to 3 sf ______
c. 84.996 to 2 sf ______
d. 6.02502 to 2 sf ______​

Answers

Answer:

a. 7.52

b. 16.5

c. 85

d. 6.03

Explanation:

significant number exempts 0 as a number which explains the last one. The two significant numbers there are 6 and 3

Choose the ingredients needed for nuclear fusion. Check all that apply. energy helium gas high temperatures hydrogen gas low pressure

Answers

answer:

high temperatures

hydrogen gas

Answer:

C and D

Explanation:

just did this on edg :)

Draw the Lewis structure for COCl2, including lone pairs.What is the molecular shape of COCl2? The C - Cl bond in COCl2 is polar or nonpolar? What is the Cl - C - Cl bond angle? The molecule COCl2 is polar or nonpolar?

Answers

Answer:

See explanation

Explanation:

COCl2 Contains two polar C- Cl bonds due to the electro negativity difference between carbon and chlorine.

There are 24 valence electrons in COCl2, the ideal bond angle is 120° based on the valence shell electron pair repulsion theory since the molecule trigonal planar. However, the double bond present compresses the bond angle to about 111°.

The dipoles in COCl2 do not cancel out hence the molecule is polar

The Lewis structure for COCl₂, including lone pairs is attached to the image below.

Carbon (C) has 4 valence electrons, oxygen (O) has 6 valence electrons, and chlorine (Cl) has 7 valence electrons.

In this structure, the oxygen atom is double-bonded to the carbon atom, and there is a single bond between the carbon atom and each chlorine atom. The oxygen atom has 2 lone pairs of electrons.

The molecular shape of COCl₂ is linear. The carbon atom is bonded to two chlorine atoms, and there are no lone pairs on the carbon atom. Therefore, the electron domain geometry is linear.

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A piece of metal with a mass of 611 g is placed into a graduated cylinder that contains 25.1 mL of water rising the water level 256.7 mL what is the density of the metal?

Answers

Answer:

The answer is

2.64 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 611 g

volume = final volume of water - initial volume of water

volume = 256.7 - 25.1 = 231.6 mL

The density of the metal is

[tex]density = \frac{611}{231.6} \\ = 2.638169257...[/tex]

We have the final answer as

2.64 g/mL

Hope this helps you

There are billions of stars in the known universe. None of them seem to be as bright as the Sun. Which statement gives the best reason why the Sun appears to be the brightest star? A. All-stars have the same apparent brightness, but the Sun has more absolute brightness. B. The Sun is the biggest of all the stars and therefore has the greatest absolute brightness. C. The Sun is the hottest of all the stars and therefore has the greatest absolute brightness. D. The Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

Answers

Answer:

The answer is D. The Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

Explanation: Stars like red super giants like beetleguise are way brighter and bigger than the sun, but the sun is closest to the earth. It is only in its main sequence stage but seems bright because of its short distance from the sun( 93 million miles).

There are billions of stars in the known universe, none of them seem to be as bright as the Sun beacuse the Sun is the closest star to Earth.

What are stars?

Stars are those astronomical bodies which are formed by the mixture of gases mainly of hydrogens and heliums, which are held by its own gravity.

In the universe or in the sky many stars are present which are luminous in appearance but among all of them only sun looks like more brighter, because the distance between the earth and the sun is not that much high as in between the other stars. That's why sun looks more brighter rather than other stars.

So, the Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

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Which compound has the highest boiling point? HF, HI, HBr, HCl, or F2?

Answers

Answer:

HF

Explanation:

This concept can be understood from the knowledge of Intermolecular forces of attraction.

Intermolecular bonds are Van der Waals forces which are weak forces of attraction joining non-polar and polar molecules together. They exist in the form of London Dispersion Forces and Dipole-dipole attraction.

An example of Dipole-dipole attraction is the hydrogen bond which is a unique dipole-dipole attraction between polar molecules in which a hydrogen atom is directly joined to a highly electronegative atom such as fluorine, oxygen, or nitrogen).

Molecules that possess the characteristics of hydrogen bonding have a higher boiling point. In the given question, only HF undergo hydrogen bond due to the electronegative effect of the fluorine element.

F2 occurs as a weak London dispersion force and it occurs between non-polar molecules.

A chemical engineer must report the average volume of a certain pollutant produced by the plants under her supervision. Here are the data she has been given by each plant: What average volume should the chemical engineer report? Be sure your answer has the correct number of significant digits.

Answers

Answer:

[tex]V_{average}=15.34L[/tex]

Explanation:

Hello,

In this case, given the volumes of pollutants:

Macon 0.519 L

Ogiala 44.67 L

Pitt 0.826 L

The average he ought report is computed by adding them and subsequently dividing by three since there are three pollutants as shown below:

[tex]V_{average}=\frac{0.519L+44.67L+0.826L}{3} \\\\V_{average}=15.34L[/tex]

Regards.

Let’s take a look at sodium (Na) and chlorine (Cl). Draw what I am describing, and you will see it better. A sodium atom has how many protons? __________ A sodium atom has how many electrons? __________ How many electrons will go in the first shell? __________ How many in the second shell? __________ How many in the third? __________ Now draw this out on the diagram in Figure 2.1, and take a look at it, in particular the third (valence) shell. We know that Na requires eight electrons in its valence shell to become stable. But how many does it have? __________ So, to fill this shell, will it be easier for sodium to steal seven more electrons from another atom, or will it be easier for sodium to give up that one electron and get rid of that third shell? Sodium is simply going to give away that last electron. This means that it will lose an electron (negative charge) but will keep the same number of protons (positive charges). What will the sodium ion’s overall charge be now? _

Answers

I have attached a photo below of the answer, it is very detailed. If you want a typed up version, here you go.
A sodium atom has 11 protons and 11 electrons. 2 electrons will go in the first shell, 8 will go in the second shell, and 1 will go in the third shell. Because sodium has 11 electrons, it has one extra in the third shell, making it unstable. It will get rid of that single electron and it’s third shell so it can become stable. After this, there will be more protons than electrons, giving it a positive charge. Hope this helps you and again, the photo holds a lot more detail with some notes and a drawing that can help you. Good luck and stay safe!

Suppose you were to read about a scientific statement based on data from hundreds of years of research and observation that applies to a broad set of naturally occurring events. Would you consider it a hypothesis or a theory? a) hypothesis b) theory c) both d) neither

Answers

Answer:

theory

Explanation:

A theory has been tested and proven several times and oftentimes has a large amount of information, research, and evidence standing behind it.

Hope this helps! :)

A student mixed together 8 g of sugar, 5.20 g of salt
and 100.01 g of flour to make cookies. What is the TOTAL
mass (add them all together) of the mixture expressed with
the correct number of significant figures?

A) 100g
B) 113g
C) 113.21g
D) 113.2g

Answers

its C) 113.21g

u just add all the masses

When adding values, the rules for the significant figures say that your answer should have as much decimal digits as the number with the least digits after the comma. In this case, 0 as ‘8 g’ has no decimals. For a multiplication you should look at significant numbers. If you would multiply these values, the answer would only be allowed to have 1 digit multiplied by a power of 10. The answer for this question is therefore 113 g as you follow the rules for addition (decimals).

The equilibrium concentrations of the reactants and products are [HA]=0.280 M, [H+]=4.00×10−4 M, and [A−]=4.00×10−4 M. Calculate the value of pKa for

Answers

Answer:

6.24

Explanation:

The following data were obtained from the question:

Concentration of HA, [HA] = 0.280 M,

Concentration of H+, [H+] = 4×10¯⁴ M

Concentration of A-, [A−] = 4×10¯⁴ M

pKa =.?

Next, we shall write the balanced equation for the reaction. This is given below:

HA <===> H+ + A-

Next, we shall determine the equilibrium constant Ka for the reaction. This can be obtained as follow:

Equilibrium constant for a reaction is simply the ratio of concentration of the product raised to their coefficient to the concentration of the reactant raised to their coefficient.

The equilibrium constant for the above equation is given below:

Ka = [H+] [A−] /[HA]

Concentration of HA, [HA] = 0.280 M,

Concentration of H+, [H+] = 4×10¯⁴ M

Concentration of A-, [A−] = 4×10¯⁴ M

Equilibrium constant (Ka) =

Ka = (4×10¯⁴ × 4×10¯⁴) / 0.280

Ka = 1.6×10¯⁷/ 0.280

Ka = 5.71×10¯⁷

Therefore, the equilibrium constant for the reaction is 5.71×10¯⁷

Finally, we shall determine the pka for the reaction as follow:

Equilibrium constant, Ka = 5.71×10¯⁷

pKa =?

pKa = – Log Ka

pKa = – Log 5.71×10¯⁷

pKa = 6.24

Therefore, the pka for the reaction is 6.24.

Three structural isomers have the formula C5H12 . Draw the three different isomers according to the number of carbon atoms in their main chain. Be sure to draw all hydrogens.

Answers

Answer:

Explanation:

The name of the compound, C₅H₁₂, is pentane. It is a member of the alkane family hence it is saturated (no double or triple bond within it's carbon chain) and SP³ hybridized. It's three structural isomers are shown (drawn) in the attachment below. The three structural isomers are n-pentane, 2-methylbutane and 2,2-dimethylpropane.

What rules can you use to tell how many protons, neutrons and electrons make up an atom or ion?

Answers

Answer:

Explanation:

This question appears incomplete, however

The number of protons of an element/atom (atomic number) can be determined by checking for the position of the element on the periodic table. This is because elements are arranged according to there atomic number on the periodic table.

The number of electrons of any element (of a neutral atom) is equal to the number of protons of the same element.

The number of neutrons of an element/atom is determined by subtracting the atomic number of the element from it's mass number. Hence, mass number is the addition of the atomic number and the number of neutrons.

Ions are charged particles that have the same number of protons and neutrons as there parent atoms. Hence, they have different number of electrons when compared to there specific parent/neutral atom.

A negatively charged atom has more electrons than it's original atom. For example, fluoride ion (F⁻) has 10 electrons while fluorine atom has 9 electrons (meaning fluoride ion has one more electron than it's parent fluorine). The increase is dependent on the number "attached" to the charge. A positively charged atom has less electrons than it's original atom. For example, calcium ion (Ca²⁺) has 18 electrons while calcium atom has 20 electrons (meaning the calcium ion has 2 electrons less than it's parent calcium atom). As said earlier, the decrease here is also dependent on the number "attached" to the charge.

The rule used for the determination of the protons, electrons, and neutrons has been the equal number of protons and electrons, while the number of the neutrons has been the difference in the atomic mass and the protons.

The atom has been the smallest particle that has comprised of electrons, protons, and neutrons as the subatomic particle. The neutrons and protons in the atoms have consisted within the nucleus. The electrons in the atom are revolving around the nucleus.

The atoms have been consisted of an equal number of protons and electrons, while the number of neutrons has been the difference in the atomic mass and the protons.

The ions have been formed with the loss or gain of the electrons by the atom in the terms of valence electrons to complete its octet.

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Write the chemical formula for this molecule​

Answers

Answer:

C2H4O

Explanation:

The chemical molecular formula is C2H4O.

Also note*: Acetaldehyde is the chemical name for this structural formula.

Can someone help me please I can’t get this hi

Answers

Milk mixture and heterogeneous

Select all the correct locations on the image. In this diagram, which subatomic particles have a negative charge?

Answers

Answer:

The correct answer is: (E), Electron.

Explanation:

There are three types of subatomic particles - protons (P) have a positive charge, neutrons (N) have zero charge, and electrons (E) have a negative charge.

Hope this helps!

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, electron is the subatomic particles that have a negative charge.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

Therefore, electron is the subatomic particles that have a negative charge.

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When of a certain molecular compound X are dissolved in of benzonitrile , the freezing point of the solution is measured to be . Calculate the molar mass of X. If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to significant digit.

Answers

Answer:

49.0g/mol is molar mass of X

Explanation:

551mg of X are dissolved in 100g of benzonitrile

Freezing point of solution: -13.4°C

The freezing point depression of a solution (Colligative property) follows the equation:

ΔT = Kf*m*i

Where ΔT is change in freezing point from the pure solvent (Benzonitrile: -12.8°C) to the solution (-13.4°C)

Kf is freezing point depression of benzonitrile: 5.34°C/m

m is molality of the solution (Moles X / kg of benzonitrile)

And i is Van't Hoff factor (1 for any solute in benzonitrile)

ΔT = -12.8°C - (-13.4°C) = 0.6°C

Solving for molality of the solution:

ΔT = Kf*m*i

0.6°C = 5.34°C/m*m*1

0.1124m = molality of the solution

Moles of X are:

0.1124mol/kg benzonitrile * 0.1kg benzonitrile = 0.01124 moles X

In 551mg = 0.551g:

Molar mass:

0.551g / 0.01124mol =

49.0g/mol is molar mass of X

what's another name for chemical change

Answers

Answer:

chemical action; chemical change; chemical process.

Explanation:

Answer: Chemical reaction

in a triple beam balance how do you know when you have to move a weight back to the previous notches or grooves ​

Answers

Answer:

sdipgjaeri0ae

Explanation:

which has the greatest percentage of oxygen? CO2, NO2,SO2 and MgO?​

Answers

Answer:

CO₂

Explanation:

Please see attached picture for full solution.

* The masses of each atom can be found in the periodic table of elements

I need help with this question ​

Answers

Answer:

2.25×10¯³ mm.

Explanation:

From the question given above, we obtained the following information:

Diameter in micrometer = 2.25 μm

Diameter in millimetre (mm) =?

Next we shall convert 2.25 μm to metre (m). This can be obtained as follow:

1 μm = 1×10¯⁶ m

Therefore,

2.25 μm = 2.25 μm / 1 μm × 1×10¯⁶ m

2.25 μm = 2.25×10¯⁶ m

Finally, we shall convert 2.25×10¯⁶ m to millimetre (mm) as follow:

1 m = 1000 mm

Therefore,

2.25×10¯⁶ m = 2.25×10¯⁶ m /1 m × 1000 mm

2.25×10¯⁶ m = 2.25×10¯³ mm

Therefore, 2.25 μm is equivalent to 2.25×10¯³ mm.

The first periodic table was organized according to atomic mass, but the current periodic table is arranged according to atomic number. why is the atomic number now the basis for the periodic table?

Answers

Answer:

It helps identify trends and group elements with similar properties.

Explanation:

Arranging the elements according to the atomic mass wouldn't help us have groups and periods with predictable properties that we can have when arranging it according to atomic number. Don't forget that isotopes have different masses.

Answer:

Not only on the basis of atomic number its acctually on the basis of their electronic configuration, chemicals properties and physical properties.

How is the le chatelier's principle used to ensure the reaction will go to completion?

Answers

Answer:

This done such that when a reaction is in equilibrium and disturb by and external force which would prevent its completion its adjust so as to offset that external force and still go on to completion

Which property of matter during a chemical change but does not change during a physical change

Answers

Answer:

The difference between physical change and chemical change is that chemical reaction is composition there is a change in the composition substances in question. In a physical change, there is a difference in the appearence, smell, or simple display of a sample matter

Explanation:

The density of liquid mercury is 13.6 g/mL. What is its density in units of lb/in​3​? (2.5 cm+1 in., 2.205 lbs= 1 kg., 1000 g =1 kg, 1 mL = 1 cm3).

Answers

Answer:

Density, [tex]\rho=0.49\ lb/in^3[/tex]

Explanation:

It is given that the density of liquid mercury is 13.6 g/mL. We need to convert the density into lb/in³.

We know that,

2.205 lbs= 1 kg

1 g = 0.0022 lb

1 mL = 0.0610 in³

[tex]13.6\ \dfrac{g}{mL}=13.6\times \dfrac{0.0022\ lb}{0.0610\ in^3}\\\\=0.49\ lb/in^3[/tex]

So, the density of liquid mercury is [tex]0.49\ lb/in^3[/tex].

why is time plotted on the x axis and distance on the y axis?

Answers

Answer:

because time is independent and distance is dependent . time goes on if distance is not there but if distance is covered it is covered in certain time . that's why distance is taken on y axis while displacement on x axis

Complete the following table for the three key subatomic particles.

Answers

Answer:

This question is incomplete without the table

Explanation:

The missing table is attached to this answer.

There are three subatomic particles found in an atom; protons, neutrons and electrons. The properties of the subatomic particles will be classified under the following subheadings (which are the empty columns/boxes in the attachment)

SYMBOL

The symbol of proton is "p⁺", the symbol of neutron is "n⁰" and the symbol of electron is "e⁻".

CHARGE

Looking at the symbol of the subatomic particles, one can guess the charge of each of the particles from the superscript.

Protons are positively charged, electrons are negatively charged while neutrons have no charge/electrically neutral.

The relative charge of proton is +1 while it's absolute charge is +1.60218 × 10⁻¹⁹

The charge of a proton was first determined by Ernest Rutherford using the gold-foil experiment

The relative charge of electron is -1 while it's absolute charge is -1.60218 × 10⁻¹⁹

The charge of an electron was first determined by R. Milikan using the oil-drop experiment

The relative charge and absolute charge of neutron is 0

The charge of a neutron was first determined by (or credited to) James Chadwick.

MASS

The relative mass (amu) of proton is 1.00727 while that of neutron is 1.00866. The relative mass (amu) of an electron is 0.00054858 while it's absolute mass (g) is 9.10939 × 10⁻²⁴.

The mass of an electron was first measured by J. J. Thomson.

The mass of a proton was first measured by (or credited to) Ernest Rutherford.

The mass of a neutron was first measured by James Chadwick.

LOCATION

The protons and neutrons are located inside the nucleus which is found in the centre of an atom while the electron(s) is/are found outside the nucleus but within the atom.

Chelsi has talked to her artist friends about how much money they earn each year from working in the arts. She
gathers these values from seven people: [$1,500; $6,700; $2,200; $8,100; $50,500; $12,000; $2,200).
What is the median of this data set?
$2,200
$6,700
$7,400
$11,900

Answers

Answer: 6,700

Explanation: took the test got it right :) (2020)

Answer:

B 6700

Explanation:

A graduated cylinder is filled with 3 mL of water. A toy car that
weighs 29 g is gently placed in the cylinder and the water level
rises to 19 mL. What is the density of the toy car? Round to the
thousandths place.

Answers

Answer:

Density = 1.813 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]Density = \frac{mass}{volume} [/tex]

From the question

mass of toy car = 29 g

Volume = New volume - original volume of water in cylinder

That's

volume = 19 - 3 = 16 mL

Substitute the values into the above formula and solve for the density

That's

[tex]Density = \frac{29}{16} \\ = 1.8125[/tex]

We have the final answer as

Density = 1.813 g/mL to the nearest thousandth

Hope this helps you

Answer:

1.813 g/mL

Explanation:

The density can be found with the following formula.

[tex]d= \frac{m}{v}[/tex]

where [tex]m[/tex] is the mass and [tex]v[/tex] is the volume.

We know the mass is 29 grams. We must find the volume.

The volume is equal to the volume of water that is displaced. Subtract the initial volume of water from the final volume.

⇒ final volume - initial volume of water

The initial volume of water is 3 mL and the final volume is 19 mL.

⇒ 19 mL - 3 mL

⇒ 16 mL

The volume of the toy car is 16 mL.

Now we know the mass and the volume.

[tex]m= 29g\\v=16mL[/tex]

Substitute the values into the formula.

[tex]d=\frac{m}{v}[/tex]

[tex]d=\frac{29g}{16mL}[/tex]

[tex]d=1.8125 g/mL[/tex]

Round to the nearest thousandth. The 5 in the ten thousandth place tells us to round the 2 to a 3.

[tex]d\approx1.813 g/mL[/tex]

The density of the toy car is about 1.813 grams per milliliter.

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=Compare 4 things that were different betweenplains culture native americans and puebloianculture native americans? Write an equation in slope-intercept form (y = mx + b). Parallel to 3x + 5y = 18 passing through (-10, -4). A grassy meadow high in the Sierra Nevada Mountains of eastern California is known to support a variety of organisms. During the summers when grass is thick and lush, and wildflowers abound, butterflies take advantage of this abundant nectar source. Bears graze on the berries in shrubs at the edge of the meadow. Deer also forage at the edge of the meadow. In the early mornings, coyotes are known to prey on the squirrel and mouse populations that burrow into the meadow soil. A variety of birds prey on the butterflies and other flying insects, such as bees and wasps.If the biomass of flowers that support the butterflies was known to contain 100,000 units of energy, and certain bird species were eating the butterflies that foraged on the flowers, what amount of energy, on average, could be expected to be transferred to the birds?Group of answer choicesa)100b1,000c10d10,000e50,000 Article VII of the Constitution describes: How do we observe in experiments? The atomic number can tell us how many neutrons are in an atom. Question 4 options: True False what does the police car represents in "the predestrian" races strategy Ariana wants to buy a house in a few years. She spends $100 a month on takeout coffee. She spends $200 a month on fast food. What can she do to save money for her house?What is common to most constitutional governments in the world? Staphylococcus aureus (remember that an organisms scientific name can also be written with the genus name abbreviatedin this case, S. aureus) is a bacterium, one of the groups of microorganisms. Although the different groups of microorganisms share some similarities, there are several important differences that distinguish each group. Drag each of the following statements to the appropriate bin to indicate whether it is a characteristic of bacteria archa fungi, or viruses.1. Derive nutrition from organic or inorganic sources or conduct photosynthesis2. Have cell walls that contain peptidoglycan3. Not typically associated with human disease4. Found in extreme environments5. Eukaryotic6. Can be unicellular or multicellular7. Cannot survive outside a host cell8. Can be seen only with an electron microscopeA. BacteriaB. ArchaeaC. FungiD. Viruses Solve for z - 9 = 27 If uw =6x-35, find uw On Thursday, a local hamburger shop sold a combined total of 234 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Thursday? A. What document, passed by the National Assembly, guaranteed men basic liberties? Why is Edwards god so angry Simplify: (use order of operations)18 2 - (982) + 48*remember to explain your steps! what is the pattern in the sequence 0, 1, 1, 2, 3, 5, 8, 13, 21, Einsteins general theory of - describes the relationshipbetween energy and matter, and is major event in the historyof science. Simplify. 1/3(11/4)^2 The daily production cost, C, for x units is modeled by the equation:C = 200 7x + 0.345x2 why was this document written?