Answer:
[tex]k=2.45M^{-2}s^{-1}[/tex]
Explanation:
Hello.
In this case, considering the given specific orders of reaction, we can write the rate law as:
[tex]r=k[A][B]^2[/tex]
Thus, considering the concentrations of A and B to be 0.200 M and 0.350 M respectively and a rate of 0.060 M/s, the rate constant turns out:
[tex]k=\frac{r}{[A][B]^2}\\ \\k=\frac{0.060M/s}{(0.200M)(0.350M)^2} \\\\k=2.45M^{-2}s^{-1}[/tex]
This is what we know as a third-order reaction since the specific orders both add to 3.
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Matter is anything that has mass. What is the smallest unit of matter known as?
Atom
Liquid
Proton
Nucleus
Answer:
Atom
Explanation:
Its the smallest unit into which matter can be divided without the release of electrically charged particles.
butter melting on warm pancakes is
conduction
convection
radiation
butter melting on warm pancakes is convection
The following information should be considered:
Since convection is the movement arise within a fluid by the tendency of hotter and therefore less dense material to rise,.Moroever, it is colder, denser material to sink under the impact of gravity, that leads in transfer of heat.learn more: https://brainly.com/question/2514933?referrer=searchResults
I’m confused on this
Answer:
B
Explanation:
The scientist had a wrong hypothesis?
Answer:
it would be C.
Explanation:
becuase the scientist would know what to to next time for his next experiment. even if it went wrong, he can try to get it right again.
All living things must maintain stable body conditions (homeostasis).
A. True
B. False
3. Where are gastropods found? Choose all the correct answers.
A) on land
OB) in salt water
OC) in fresh water
OD) all of the above
O E Maastropods are extinct
Save
Answer:
OD
Explanation:
they live in every habitat on Earth. Marine habitats, ocean basins, freshwater habitats, and inland equatic habitats including salt lakes.
How many km are in a foot
Answer:
0.000305 km
Explanation:
1 foot = 0.000305 kilometers
Answer:
[\tex]\huge\bold\red{brainiest answer}[/tex]1 km =3,280.8398950131foot
In step two of Experiment 4, you add sodium hydroxide to copper(II) nitrate and use a stirring rod to test if the solution is basic. How do you establish whether the solution is basic
Answer:
use litmus paper.
Explanation:
if red litmus paper turns blue solution is basic
blue litmus paper will remain blue if solution is basic
We can establish whether the solution in step two of experiment 4 is basic by carrying out litmus paper test. If the solution turns red litmus paper blue, then it is basic
In order to establish whether a solution is acidic, basic or neutral, litmus paper test could be carried out to know.
An acidic solution will turn blue litmus paper red
A basic solution will turn red litmus paper blue
A neutral solution does not have effect on blue or red litmus paper.
Therefore, in order to establish whether solution that resulted from adding sodium hydroxide to copper(II) nitrate in step two of Experiment 4 is basic, we could carry out a litmus paper test.
If the solution turns red litmus paper blue, then it is basic.
Hence, we could establish whether the solution in step two of experiment 4 is basic by carrying out litmus paper test. If the solution turns red litmus paper blue, then it is basic.
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3. Describe the trends in atomic size, ionization energy, and electronegativity from left to right across a period in
the periodic table.
Answer:
Atomic size increase with increasing atomic number within a group.
Atomic size decrease with increasing atomic number across a period.
The statement, that describe the trends in atomic size, ionization energy, and electronegativity is "that atomic size decreases, ionization energy and electronegativity increases."
What is atomic size?Atomic size seems to be the space between an atom's nucleus and its outermost shell.
What is ionization energy?The energy necessary to remove the highest-energy electron from a neutral atom is known as ionization energy (IE).
What is electronegativity?Electronegativity is a chemical property that describes an atom's or functional group's inclination to draw electrons toward itself. Across a period of elements, atomic size falls steadily from left to right. This is because all electrons within a period or family of elements are added to the same shell. Ionization energy generally increases across a period and declines down a group.
Electronegativity normally increases as you move from left to right across a period and decreases as you move down a group on the periodic table.
Hence the correct answer is atomic size decreases, ionization energy and electronegativity increases.
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Which lists three parts of sunlight that make up some of the visible spectrum?
O green, blue, indigo
O infrared, red, orange
ultraviolet infrared, electromagnetic
violet, ultraviolet A ultraviolet B
Brainly if correct Hurry
Answer:
Its A
Explanation:
Green, blue, indigo lists three parts of sunlight that make up some of the visible spectrum. Hence option with green, blue, indigo is correct.
What is Electromagnetic Spectrum ?Electromagnetic spectrum is nothing but the range of wavelengths or frequencies on which electromagnetic radiation extend. it is whole distribution of electromagnetic waves according to frequency or wavelength. Electromagnetic wave is nothing but a photon which carries energy. Photon has frequency, wavelength as well as amplitude.
Electromagnetic spectrum is show in figure.
Range from 4000 angstrom to 7000 angstrom from violet to red respectively shows the visible light
Infrared light is nothing but the heat we feel from the sun. and ultraviolet light is blacked by ozone layer. we can calculate exact value of temperature of the sun rom Stephan's forth power law.
Green, blue, indigo, red and oranges are the colors from visible light, therefore they are part of visible light.
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Question 3 (12 points)
The core becomes a
a hot, dense, slowly cooling sphere of carbon.
Оа
red dwarf
Answer:
c
Explanation:
What is the air temperature 8,850 m in the air?
Material
Appearance of the material,
including its color and state
baking soda
baking powder
Salt
sugar
flour
vinegar
cooking oil
The appearance and physical states of the material given is described below please look at it.
Appearance of the materials:Baking soda: It is a white solid.
Salt: it is white in color having a solid physical state.
Sugar: It is white in color having crystals or solid in physical state.
Flour: It is creamish white in color having solid particles.
Vinegar: It is transparent in color.
Cooking oil: It is a yellowish emulsion.
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Why does a water molecule have a bent shape?
Answer:
The oxygen atom has lone pairs of electrons.
Explanation:
If air has a density of 1.225 kg/m3, what is the mass of the air in a hot air balloon that has a volume of 2,800
m3?
Answer:
The answer is 3430 kgExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 2800 m³
density = 1.225 kg/m³
We have
mass = 2800 × 1.225
We have the final answer as
3430 kgHope this helps you
What is cheese made of is it like a piece of moon ?!
Answer:
It's made from dairy.
Explanation:
How many moles of Hions are present in the following aqueous solution?
3.3 mL of a 0.65 M nitric acid:
Answer:
Nitric acid is a strong acid meaning it completely dissociates in water. Therefore, you can say that the concentration of H+ ions in solution is the same as the concentration of the acid (molar concentration). So once you have that, you can use the pH formula to find the pH of the acid.
pH = -log[H+]
So if you have .15 M HNO3 the pH is 0.82.
But, if you have a different concentration, the pH will change.
Explanation:
a object in a fluid will sink if the
help plz
Answer:
D.
Explanation:
Because if an object is more dense than water it will sink.
what is the formula for calcium bisulfate
Answer:
the formula
Explanation:
2. What is an example of an object that affects gravity on Earth?
Answer:
The moon
Explanation:
The moon pulls on the earth, causing the tides to raise as the water is being pulled by the moon.
a sample can not be broken down physically or chemically what is it
Answer:
Pure Substance. A sample of matter, either a single element or a single compound, that has definite chemical and physical properties. Element. A pure substance that cannot be broken down into other substances by chemical or physical means.
Explanation:
Sorry if it's wrong!!!!!!!
Answer:
Elements
Explanation:
Elements cannot be broken down into anything simpler physically or chemically. Compounds: are pure substances that are made up of more than l type of atom and can be broken down or decomposed into its individual elements by chemical methods, but cannot be separated by physical methods.
All living things are made of organic compounds which contain the element
A)
carbon.
B)
hydrogen.
C)
oxygen.
D)
phosphorus.
What is the volume of a substance that has a mass of 20 g and a density
of 4.0 g/ml?
Answer:
The answer is 5 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
So we have
[tex]volume = \frac{20}{4} \\ [/tex]
We have the final answer as
5 mLHope this helps you
A student loaded a mixture of compounds onto a silica gel column using 5 mL of dichloromethane as the loading solvent. After running the column using petroleum ether as the eluant and collecting 8 fractions, the student analyzed the contents by TLC to find that all of the compounds in the mixture came off in the first two fractions. In addition, no separation was observed. Choose the statement that BEST describes the error. The sample should be loaded using a maximum 1 mL of CH2Cl2. Petroleum ether was the incorrect eluant. A more polar solvent should have been used. The student should re-run the TLC. It was obviously performed incorrectly. The student packed the column incorrectly.
Answer:
Petroleum ether was the incorrect eluant.
Explanation:
In column chromatography, there must be a mobile phase (eluant) and a stationary phase(adsorbent column). The mobile phase in this case is petroleum ether while the stationary phase is silica gel.
If no separation is observed, then it simply means that the wrong choice of mobile phase(eluant) was made. If a better choice of eluant is made, it can effectively achieve the separation of the mixture. The components of the mixture have a great affinity towards the petroleum ether hence they moved rapidly through the column and separation was not achieved.
Which health issue is associated with exposure to indoor air pollution?
O stroke
O hair loss
diabetes
O skin cancer
Answer:
stroke
Explanation:
Classify the sugars as either aldoses or ketoses. A Fischer projection with a six carbon backbone. Carbon one is an aldehyde and carbon six is part of the group C H 2 O H. Carbons two and three have an hydroxide group on the left, and carbons four and five have an hydroxide group on the right. A Fischer projection of a six carbon backbone. Carbons one and six are part of a C H 2 O H group. Carbon two is attached to a ketone, carbons three and four have a hydroxide group on the left, and carbon five has a hydroxide group on the right. A Fischer projection with a five carbon backbone. Carbon one is an aldehyde, carbon five is part of the group C H 2 O H, and carbons two through four have an hydroxide group on the right. A Fischer projection with a three carbon backbone. Carbon one is an aldehyde, carbon three contains the group C H 2 O H, and carbon two has a hydroxide group on the right. A Fischer projection with a five carbon backbone. Carbons one and five are part of a C H 2 O H group. Carbon two is attached to a ketone and carbons three and four have a hydroxide group on the right. A Fischer projection of a four carbon backbone. Carbons one and four are part of a C H 2 O H group. Carbon two is attached to a ketone and carbon three has a hydroxide group on the right. Answer Bank
Answer AND Explanation: Carbohydrates or sugars have three classes:
Monossaccharides: made from a single polyhydroxy aldehyde or ketone unit;Oligosaccharides: formed by short chains of monossacharides united by glycosidic linkage;Polysaccharides: consist of a long chain of monossaccharides;Monossaccharides are formed by a chain of unbranched carbon, all bonded by single bonds, except for a carbon that is double-bonded by an oxygen. This bond form a carbonyl group.
If the carbonyl is at an end of the chain, the carbon is aldehyde and the molecule is called aldose. If the group is in any other position, it is a ketone and is called ketose
So analysing each projection:
1) Carbon one is a aldehyde, which means is a carbonyl and there are no other carbons forming that bond, so it's a ALDOSE
2) Carbon two is attached to a ketone and other carbons aren't, so it's a KETOSE.
3) Carbon one is aldehyde, so it's ALDOSE
4) Carbon one is aldehyde, so ALDOSE
5) Carbon two is attached to ketone, so KETOSE
6) Carbon two attached to a ketone, so KETOSE
The oligopeptide MNQSYGRLVSRAAIAATAMASLIKIFAWWY was cleaved by reaction with trypsin. Trypsin is a serine protease that hydrolyses peptide chains at the proteins at the carboxyl sides of the amino acids lysine or arginine. The products of the digestion are then subjected to ESI TOF-MS in positive ion mode with the peptides in a pH 2 solution. a. Calculate the mass of each cleavage product based on their amino acid sequence and determine their predominant charge state at pH 2. Which product will reach the detector first
Answer:
Follows are the solution to this question:
Explanation:
The creation of four fragments,
(n endpoint) MNQSYGR (c endpoint)
Weight of the molecular = 854.92
Load = 2
[tex]\to \frac{mass}{Load}[/tex] = 427.46
(n endpoint)RLVSR (c endpoint)
Weight of the molecular = 629.76
Load = 3
[tex]\to \frac{mass}{Load}[/tex]= 209.92
(n endpoint) AATAMASLIK (c endpoint)
Weight of the molecular = 976.20
Load at pH(2). = 2
[tex]\to \frac{mass}{Load}[/tex]= 442.50
(n endpoint) IFAWWY (c endpoint)
Weight of the molecular = 885.03
Load= 1
[tex]\to \frac{mass}{Load}[/tex]= 885.03
It is apparent that RLVSR is the smallest mass ration for this peptide that is detected in the first place.
Draw the structural formula for CH2CONHCH3 and what its functional group
Answer:
The structural formula of CH2CONHCH3 is attached below -:
and the functional group of CH2CONHCH3 is - Amide
Explanation:
The IUPAC name of CH2CONHCH3 is -: N-methyl ethenamide .
ABOUT AMIDE FUNCTIONAL GROUP -: In organic chemistry, an amide, also known as an organic amide or a carboxamide, is a compound with the general formula RC(= O) NR 'R' where R, R 'and R' represent hydrogen organic groups or atoms. When it is part of the main protein chain, the amide group is referred to as a peptide bond and isopeptide bond when it appears in a side chain, such as asparagine and glutamine in the amino acids.
The structural formula shows the arrangement of atoms and groups in a compound.
A chemical compound is composed of atoms of elements. There are three structures that could be written for a chemical substance. These are;
Empirical formulaMolecular formulaStructural formulaThe structural formula of a compound shows the arrangement of atoms and groups in the compound in space. The structural formula of the compound CH2CONHCH3 has been shown in the image attached. The following functional groups are present in the compound;
AlkyneKetoneAmineLearn more: https://brainly.com/question/946875
Select the correct responses to the questions from the drop-down menus.
Which type of precipitation freezes when it comes into contact with a cold surface?
Which type of precipitation is round pellets of ice more than 5 millimeters in diameter?
Which type of precipitation is water vapor that condenses into ice crystals in clouds?
Answer:
Which type of precipitation freezes when it comes into contact with a cold surface?
✔ freezing rain
Which type of precipitation is round pellets of ice more than 5 millimeters in diameter?
✔ hail
Which type of precipitation is water vapor that condenses into ice crystals in clouds?
✔ snow
Explanation:
The type of precipitation that freezes when it comes into contact with a cold surface is freezing rain.
The type of precipitation that is round pellets of ice more than 5 millimeters in diameter is hail.
The type of precipitation where water vapor condenses into ice crystals in clouds is snow.
Freezing rain is the rain that is maintained at a temperature that's below freezing by ambient air mass. It's made entirely of liquid droplets.
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PLEASE HELP!!! Do you think the number of animals that eats plants is related to the number of plants?
Answer:
Yes
Explanation:
As the number of animals that eat plants increase, the number of plants decrease. This is because the animals are eating a larger and larger number of plants and reducing the population.
When the number of plants gets too low, the animals will not be able to survive, and they will start to decrease in numbers. In turn, the plants will increase again. Eventually, they will reach an equilibrium.
Two compounds of phosphorus and flurorine have the following mass ratios
Compound 1: 10.14 g fluorine for every 3.38 g phosphorus
Compound 2: 8.42 g flurorine for every 4.21 g phosphorus
Find the whole number ratio of masses of flurorine in compound 1 to compound 2
Answer:
25.6 Explanation: