Help!!
What is the concentration of an unknown with an absorbance of 0.4 using the plot?

Help!! What Is The Concentration Of An Unknown With An Absorbance Of 0.4 Using The Plot?

Answers

Answer 1

Answer:3,4,1,2

Explanation:

hope this helped


Related Questions

Scientists use patterns in the periodic table to what?

Answers

I found this on google

“The periodic table is important because its is organized to provide a great deal of information about elements and how they relate to one another in one-easy-to-use reference. The table can be used to predict the properties of elements, even those that have not been discovered.”

I hope this helps

When the dry ingredients of a cake are combined, what is the result? A.Element B.Mixture C.Compound D.Atom

Answers

A combination of dry ingredients of a cake results in a mixture.

A mixture is a combination of substances that are only physically but not chemically combined.

Mixtures are different from elements, compounds, and atoms because:

elements are pure substances consisting of a single type of atomcompounds are a mixture of different elements that are chemically combinedatoms are the smallest particle of an element.

More on mixtures can be found here: https://brainly.com/question/24898889?referrer=searchResults

Answer:

Its mixture

Explanation:

Pls give me brainly ...

Would you expect manganese(II) oxide, MnO, to react more readily with HF(aq) or NaOH(aq)?

Answers

Answer:

NaOH(aq)

Explanation:

NaOH(aq) is known to precipitate Mn^2+ ions according to the following reaction; Mn^2+(aq)+2OH^−(aq)↽−−⇀Mn(OH)2(s)

Hence, manganese(II) oxide reacts more readily with NaOH(aq) under ordinary conditions precipitating the metal hydroxide solid. This is one of the characteristic reactions of Mn^2+.

Methanol, propan-1-ol and ethanol has boiling point of 65 degree celsius, 97 degree celsuis, 87 degree celsuis respectively. A student uses fractional distillation to separate a mixture of these compound. State which liquid will be collected in the second fraction and explain why

Answers

Answer:

ethanol

Explanation:

Methanol has a boiling point of 65°C, propan-1-ol has a boiling point of 97°C and ethanol has a boiling point of 87°C

Fractional distillation is used for separating miscible liquids through the use of the different vapor pressure properties of the liquids. As the mixture is heated up, components start to vaporize according to their boiling points. The component with the least boiling point vaporizes first while the component with the highest boiling point vaporizes last.

This means that methanol would vaporize at the first fraction because it has the lowest boiling point followed by ethanol at the second fraction and then propan-1-ol at the last fraction.

Question 1: A blocked-off meander eventually becomes

A)an oxbow lake.
B)part of the stream again
C) alluvial fan
D)rejuvenated.

Question 2: As the velocity of a stream decreases, which transported particle size would settle to the stream’s bottom first?
A) slit
B) clay
C)pebble
D) sand

Answers

Question 1 is A.) an oxbow lake
Question 2 is C.) pebble

Suppose that green spheres represent chlorine atoms, yellow-green spheres represent fluorine atoms, white spheres represent hydrogen atoms, and all the molecules are gases

Answers

Answer:

a. Reactants: F₂ and HCl molecules

Products: Cl₂ and HF

b. 4HCl + 2F₂ ----> 4HF + 2Cl₂

c. Single replacement reaction

Note: The question is not complete. The complete question is found below as well as in the attachment.

Suppose that green spheres represent chlorine atoms, yellow-green spheres represent fluorine atoms, white spheres represent hydrogen atoms, and all the molecules are gases:

a. write a formula for each of the reactants

b. write a balanced equation for the reaction

c. indicate the type of reaction as combination,decomposition, single replacement, double replacement, or combustion

Explanation:

a. From the models shown in the diagram, The reactants are F₂, HCl while the products are Cl₂ and HF respectively

b. Equation for the reaction is given below;

4HCl + 2F₂ ----> 4HF + 2Cl₂

c. The reaction is single replacement reaction such that fluorine gas molecules replace the chlorine atoms in hydrogen chloride to form hydrogen fluoride with the liberation of chlorine atoms as gaseous molecules.

What is the measurement from the line of origin to the crest?

A. Trough
B. Amplitude
C. Crest
D. Wavelength

Answers

Im 90% sure its B amplitude

Glycerol has a density of 1.26g/mL. What is the mass of 3000.mL of glycerol?

Answers

Hey you got a picture you can call the number one phone call you got it and send

Question 6 (1 point)
Sound, earthquakes, and waves in water are rechanical waves because they require
a physical to transport energy. (Lesson 4.02)
O electromagnetic field
O disturbance
O medium
location

Answers

Answer: The answer is MEDUIM

Explanation:

Check out this long-form version of the periodic table. It shows where the two rows of
elements from question 4 really belong in the periodic table. Think about the challenges of
using this version of the periodic table.
Which statement offers the most likely explanation of why the long-form version of the
periodic table is seldom used?
The elements in the separate group are so rare that they do not occur in nature.
The elements in the separate group have very little in common with one another.
The long-form version no longer keeps the elements in order of increasing atomic
number.
The long-form version is too wide to easily fit on a computer screen or sheet of
paper.

Answers

Answer:

The long form version is too wide to easily fit on a computer screen or sheet of paper

Explanation:

I need help please (o´・ェ・`o)

Answers

Tantalum:  2

Niobium:  3

Dubnium:  1

Please make brainliest ?

Identify the type of reaction depicted below:
2SO2(g)
+
O2(g) --> 2SO3(g)

Answers

Answer:

Combination reaction

Explanation:

In Chemistry, elements and compounds are involved in a process called chemical reactions, which are of different types namely: combination, decomposition, double replacement, combustion etc. A combination reaction is that reaction in which two or more substances called the REACTANTS combine together to form a single new substance called the PRODUCT.

In this case, a reaction is depicted as follows:

2SO2(g) + O2(g) --> 2SO3(g)

In this reaction, compound SO2 combines chemically with element O2 to form a single new compound SO3. Hence, this is a type of COMBINATION REACTION.

Explain the importance of valence electrons in chemical bonding.​

Answers

Answer:

Explanation: Understanding valence electrons is key to understanding chemical bonding. Delocalized valence electrons produce metallic bonds (bonds between atoms of metals) which give metals unique properties such as conductivity and ductility (draw metal into wires)

Are ionic compounds not carrying a charge?​

Answers

Answer:

yes they carry charges

A student builds an electrical circuit. In the circuit, a
battery is connected to a siren.


Which series of energy transformations takes place in the circuit when the
siren turns on?


A. Chemical energy - Sound energy - Electrical energy


O B. Electrical energy - Chemical energy - Sound energy


C. Chemical energy - Electrical energy - Sound energy


O D. Sound energy - Electrical energy - Chemical energy

Answers

Answer:

C. Chemical energy - Electrical energy - Sound energy

Explanation:

According to the law of conservation of energy, energy can be transformed i.e changed from one form to another. According to this question, a student builds an electrical circuit, which connects a battery to a siren. Based on this description, the electrical circuit uses ELECTRICAL ENERGY supplied by the CHEMICAL ENERGY in the battery cell.

The electrical energy in the circuit connects the CHEMICAL ENERGY in the battery to the siren, which makes the sound using SOUND ENERGY. In other words, the CHEMICAL ENERGY of the battery powers the ELECTRICAL ENERGY of the circuit to make SOUND ENERGY in the siren. Hence, the order of energy transformation is: Chemical energy - Electrical energy - Sound energy

Answer:

C. Chemical energy - Electrical energy - Sound energy

Explanation: I took the test:)

Describe how sodium (Na) and chlorine (Cl) interact to form an ionic compound. Specifically, what is happening to an electron?

Answers

When a sodium atom transfers an electron to a chlorine atom, forming a sodium cation (Na+) and a chloride anion (Cl-), both ions have complete valence shells, and are energetically more stable. The reaction is extremely exothermic, producing a bright yellow light and a great deal of heat energy.
Here you go its agin me answering you

Write the chemical formula for gold (I) sulfide.

Answers

Answer

Au2s

please mark me as brainlist

Etiquetas de productos de casa formula química, nombre de la formula, y el nombre del producto. Ejemplo NaCL, Cloruro de sodio, sal.

Answers

Answer:

Azucar, bicarbonato de sodio, lavandina, vinagre, amoniaco.

Explanation:

Podemos numerar estos compuestos

Azucar → Sacarosa → C₁₂H₂₂O₁₁

Lavandina → Hipoclorito de sodio → NaClO

Vinagre → Ácido acético → CH₃COOH

Bicarbonato de sodio → NaHCO₃

Amoníaco → NH₃

Which statement best describes John Dalton's use of creativity in his work? He reinterpreted and retested Joseph Proust's results. He used a philosophy to conduct his experiment. He recorded his results as four parts of the atomic theory. He rejected Democritus's idea that matter was composed of atoms.

Answers

Answer: The correct statement is that,

'He reinterpreted and retested Joseph Proust's results'

Explanation:

John Dalton was an English chemist who contributed greatly to the field of Chemistry. He published his theory about atom in 1808.

Dalton was the first person to recognize a workable distinction between the fundamental particle of an element (atom) and that of a compound (molecule). The atomic theory generally summaries the laws of chemical composition which includes:

--> law of constant composition and

---> law of multiple proportions.

John Dalton was being creative in his work by reinterpretation and retesting of Joseph Proust's results. Joseph Proust was a French chemist that first discovered the law of constant composition in 1794. This means that many has started working on the atoms before John Dalton discovery.

From the previous works of Proust, he had studied tin oxides and found that their masses were either 88.1% tin and 11.9% oxygen or 78.7% tin and 21.3% oxygen (these were tin(II) oxide and tin dioxide respectively). Dalton retested and noted from these percentages that 100g of tin will combine either with 13.5g or 27g of oxygen; 13.5 and 27 form a ratio of

Dalton reinterpreted it by finding an atomic theory of matter that could elegantly explain this common pattern in chemistry – in the case of Proust’s tin oxides, one tin atom will combine with either one or two oxygen atoms. I hope this helps, thanks.

Answer:

A.) He reinterpreted and retested Joseph Proust's results

Explanation:

Will give extra points and brainliest if you go in the comments and answer a few other questions

Answers

Answer:

5,293 km, A

Explanation:

B has no coma.

C is too overly touchy

Answer:

b

Explanation:

How long does it take for new fossil fuels to be created?
A.millions of years
B.billions of years
C. thousands of years
D. hundreds of years​

Answers

Answer:

millions of years sometimes even hundred of millions of years

Answer:

How long does it take for new fossil fuels to be created?

Explanation: so it takes 65 million years to creat new fossil fuels so i think it may be  A.millions of years i am sorry if i am wrong but i do beleave i am right

This is a science question.

What is the acceleration of this helicopter?

Answers

Answer:

7m/s

Explanation:

Is the acceleration of the helicopter

Which of the following is a subsurface event that takes place during the rock cycle?

Group of answer choices

Cementing

Erosion

Melting

Weathering

Answers

Answer:

Melting

Explanation:

Could not have been erosion because erosion happens on the surface.

Could not have been weathering because weathering happens on the surface.

So we only have Cementing and Melting left....

The answer is melting, I got 100% on my test.

Hope this helps!!!! :D

Please give brainliest!!!

Answer:

D

Explanation:

In the rock cycle, surface events takes place at the surface of earth. Thus,

weathering and erosion are surface events, while the subsurface events he take place in the deeper section of the earth . Examples of sub surface events are plate tectonics and mountain building or anything that takes place in the inner core of earth.

Convert 2.5 x 102km to mm.

Convert 188 dL to L

Answers

2.5*102km to mm
2.5*102=255
255x1000000=255000000 mm
188dL to L
188/10=18.8 L

methanol on reaction with acetyl chloride gives​

Answers

Answer:

Explanation:

Ethanoyl chloride reacts instantly with cold ethanol. There is a very exothermic reaction in which a steamy acidic gas is given off (hydrogen chloride). Ethyl ethanoate (an ester) is formed.

Which expression is equal to the number of grams (g) in 2.43 kilograms (kg)?
2.43 kilograms times StartFraction 1000 grams over 1 kilogram EndFraction.
2.43 grams times StartFraction 1 kilogram over 1000 grams EndFraction.
StartFraction 1 over 2.43 kilograms EndFraction times StartFraction 1000 grams over 1 kilogram EndFraction.
StartFraction 1 over 2.43 kilograms EndFraction times StartFraction 1 kilogram over 1000 grams EndFraction.

Answers

The answer would be 2.43

Answer:

A. 2.43 kg x 1000 g/1 kg

Explanation:

I said so

What is the charge of this atom?
65 protons
60 electrons

A)-5
B)+5
C)0

Answers

Answer:

B. +5

Explanation:

B is the answer to your ?????? C


What term is used for the electrons in the outermost shell or energy level

Answers

Answer:

Valence Electrons

Explanation:

Answer:

Valence

Explanation:

The outermost shell are the valence electrons

a glass of water with a mass of 0.35 kg rests on the edge of a desk 0.85 m above the floor given that the acceleration due to gravity is 9.8 m / s² what is the elastic potential energy

Answers

Answer:

2.92

Explanation:

just took the test

Which of the following is not a controllable risk factor?
a. smoking
b. inactivity
c. aging
d. over eating

Answers

Answer:

C) Aging

Explanation:

You can't stop that or change the rate that you age at. its inevetable :D

Other Questions
this is the name given to the idea of roman peace and prosperity during the height of the empire Choose an integer between 5 and 10. Label it on the number line created in Problem 3, and complete the following tasks. a. What is the opposite of ? Label it . b. State a positive integer greater than . Label it . c. State a negative integer greater than . Label it . d. State a negative integer less than . Label it . e. State an integer between and . Label it .IM ADDING A PICTURE OF THE QUESTION sergio must ride 7.5 miles in 1/4 hour to achieve this target speed, so he needs to ride an additional ____ mile per 1/4 hour Which sentence from the narrative portion of Monster reveals that it is written using a first-person point of view? If anybody knows that you are crying, theyll start talking about it.I wonder if I will look like myself when the trial is over. Theyre strangers but they still find reasons to hurt each other. It is a strange movie with no plot and no beginning. 3Square TUVW on the coordinate plane has points T(0, 0), U (5, 5), and V (0, 10). What are the coordinates of pointW?A (55) (-5,5)C (-5, -5)D (10,0) Based on the following information, calculate the cost of goods sold and ending inventory using FIFO, LIFO, and weighted average assuming a perpetual inventory system is in place. Beginning Balance - 90 units at $11 March 3 - Purchase 300 units for $15 April 4 - Sell 240 units for $28 June 30 - Purchase 250 units for $18 August 16 - Sell 180 units for $30 Please I really need help this is due tomorrow :(((((( there is only three options someone help Question: Using only reciprocal, Pythagorean, sum/difference, and/or half angle identities, prove the equation below. You must use angles A and B, do not replace with actual vales. Only work with the right side of the equation. You should use TEN steps to accomplish this proof! cosA+cosB= 2cos(A+B/2)cos(A-B/2) Please help... awarding 20 points and brainiest if correct. How many word roots does the term: Esophagogastroduodenoscopy have? Ina crespo rowed 7.5 miles down the Hanbashabee river in 1.5 hours ,but the return trip took her 2.5 hours.find the rate ina rows in still water and the rate of the current. What is the difference between -4and 6 How do animals obtain energy from the foods they eat?A. Water in foods is broken down to release energy.B. Sugars in foods are broken down to release energy.C. Fats are produced in the body and used to make energy.D. Proteins are produced in the body and used to make energy. The lagging strand can be copied in ___A. segments B. continuous strand What is a favorite food of the Pacific Northwest Indians This document often signals the end of a wardeclarationtreatytyrantproclamation 2. Theof a sentence is the person, place, thing, event, etc. beingdescribed or referred to in a sentence.a. subjectb. articlec. claused. predicate Sorry guys but I still dont understand, can you help me with this question? Atlantic South America countries are able to export beef corn and soy beans because of the regions A large rain forest B fertile farmland C lengthy coastlines D Powerful river