Answer:
The correct option is;
The gas particles move faster, have the same molecular composition, and have weaker attractions between them than the liquid particles
Explanation:
The properties of the gas molecules in comparison to liquids are
1) The gas molecules are widely spread out
2) After evaporation and while in conditions favorable to the gaseous state, the kinetic energy of a gas is larger than the inter molecular attractive forces
3) A gas fills the container in which it is placed
For liquids
1) There are strong intermolecular forces holding the molecules together in a liquid
2) Liquid attractive forces in a liquid are strong enough to hold neighboring molecules
3) The volume of a liquid is definite.
The rate of diffusion of gas A is double the rate of gas B. The ratio of their molecular weight is
Answer:
Ratio is 4:1
Explanation:
from graham's law of gaseous diffusion:
[tex]{ \bf{ \frac{R _{A} }{R_{B} } = \sqrt{ \frac{M_{A} }{M_{B}} } }}[/tex]
but Ra = 2Rb:
[tex]{ \sf{ (\frac{2}{1} ) {}^{2} = \frac{M _{A}}{M _{B} } }} \\ \\ { \sf{\frac{M _{A}}{M _{B} } = \frac{4}{1} }} \\ \\ {M _{A}} : {M _{B} } = 4 :1[/tex]
QIV: Give one example each of the following:
1. Opaque objects.
2. Non-luminous objects.
3. Homogeneous medium.
4. Heterogeneous medium.
5. Transparent objects.
6. Translucent objects.
7. Luminous objects.
8. Man made source of light.
9. Objects that reflect light.
Answer:
s
Explanation:
1- Wood
2-Moon
3-Pure water
4-Sand and water
5-Glass
6-Paper
7-Sun
8-Flashlights
9-Glass or polished metal
If you don't like my examples then sorry
Can you tell me name of chemicals in sea Please?
this is my attachment answer hope it's helpful to you
Which of the following is the correct Lewis structure for methane (CHA)?
O A. H-C-H
H
I-0-I
OB. H-H-C-H-H
0
H
O c. H:C:H
H
OD H-C-H
The correct lewis structure of methane(CH4)
C. H:C:H:H
A wittig reaction occurs when 4-methylbenzaldehyde and benzyltriphenylphosphonium chloride are stirred together at room temperature in the presence of sodium hydroxide base. Draw the major isomer produced by this reaction.
Answer:
See explanation
Explanation:
The wittig reaction is an organic reaction in which an aldehyde or a ketone reacts with a phosphonium ylide to give an alkene. This phoshonium ylide that participates in the reaction is usually generated insitu in the system by reaction of an alky or aryl triphenylphosphonium halide salt with a base(sodium hydroxide is mostly used).
In this particular reaction 4-methylbenzaldehyde and benzyltriphenylphosphonium chloride were reacted together in the presence of sodium hydroxide and the product with the structure shown in the answer was obtained as the major isomer produced in the reaction.
How does a balanced chemical equation represent the conservation of
matter in a chemical reaction?
1. There are more atoms in the reactants than in the products.
2. The type of matter in the products is different from the type of matter in
the reactants.
3. The number of atoms of each element in the reactants equals the number
of atoms of each element in the products.
4. There are fewer atoms in the reactants than in the products
Answer:
The correct answer would be 3. The number of atoms of each element in the reactants equals the number of atoms of each element in the products.
Explanation:
The law of conservation of matter states that energy cannot be created or destroyed, only transfered. Thus, option 3 is correct.
Why is carbon said to provide a "backbone" in many molecules? (1 point)
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily
Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.
The correct answer is; Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Organic chemistry is regarded as the chemistry of carbon compounds and carbon atoms are known to catenate.
Organic chemistry is the branch of chemistry that studies carbon compounds. There are thousands of organic compounds in existence.
The common thread that joins all these organic compounds is that they all contain a long or branched chain of carbon atoms linked to each other. This ability of carbon atoms to self-link forming long chains or branches or macrocyclic compounds is called catenation.
The long or branched chain of carbon is therefore the "back bone" or main framework of the compound.
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Answer:
(Question 1) Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible?
(Answer) The bonds can shift because valence electrons are held loosely and move freely.
(Question 2) Between which types of elements do ionic bonds occur, and how do electrons act within the bond?
(Answer) metals and nonmetals, electrons transferred
(Question 3) Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)?
(Answer) ionic
(Question 4) Why is carbon said to provide a “backbone” in many molecules?
(Answer) Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
(Question 5) Which option describes the structure of the electron shells in a neutral carbon atom?
(Answer) The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
Explanation:
i just finished the quick check UwU
Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will_______________.
Answer:
If mass remains the same while the volume of a substance changes, the density of the substance will also change.
Answer:
BELOW
Explanation:
If mass remains the same while the volume of a substance decreases the density of the substance will increase.
Which is one way scientist communicate the results of an experiment?
Answer:
By writing an experiment report
Explanation:
Are all elements atoms and are all atoms elements?
Answer:
yes
Explanation:
because is smallest element that are made up of atom
Answer: Yes
Explanation:
Explain why the first ionisation energy of helium is
larger than that of hydrogen.
Answer
Explanation:
helium has a structure 1s² the electrons are removed from the same orbital as in case of hydrogen the electrons are closest to the nucleus the value of ionization energy of helium is much higher than hydrogen because the nucleus now has 2 proton attracting the electrons instead of 1 in case of hydrogenWhich missing item would complete this alpha decay reaction?
21CF-247 Cm +
Answer:
the atomic number decreased in 2, from 100 to 100 - 2 = 98. 3) Hence the formed atom has atomic number 98, which is californium, Cf, and the isotope is californium - 253. 4) The item that completes the given alpha decay reaction is: ₉₈²⁵³ Cf.
Explanation:
clearly distinguish between science and technology
Answer:
The words science and technology can and often are used interchangeably. But the goal of science is the pursuit of knowledge for its own sake while the goal of technology is to create products that solve problems and improve human life. Simply put, technology is the practical application of science.
Explanation:
Check the following images
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Is water the only liquid? If not, name 5 more
Answer:
Is water the only liquid? If not, name 5 more
Water, ethanol, household bleach, blood, paint, milk, gasoline, mineral oil, acetone and butyl alcohol are examples of liquids. Liquids' properties allow them to flow or be poured easily into containers, lava
water is not the only liquid.
Answer:
apple juice, milk, smoothie, blood, urine
What happens when two objects when they are brought closer together The mass of both objects decrease The mass of both objects increase The gravitational force between them decreases The gravitational force between them increases
Answer:
The correct option is
The gravitational force between them increases
Explanation:
According to Newton's law of universal gravitation states that the force of attraction between two bodies is directly proportional to the product of the masses of the bodies and inversely proportional to the square of the distance of their centers from each other.
The formula for universal gravitation is given as follows;
[tex]F_{1} = F_{2} =G \times \dfrac{m_{1} \times m_{2}}{r^{2}}[/tex]
Where;
F₁, and F₂ = The gravitational forces of attraction on each mass
G = The gravitational constant
m₁ = The mass of one body
m₂ = The mass of the body
r = The distance between the centers of the two bodies
Therefore, the gravitational force of attraction on each object is inversely proportional to the as the distance between the centers of the two bodies
When the distance between the centers of the two bodies decreases, the two objects are brought closer together, the gravitational force of attraction between them increases.
Answer:
Gravitational force between two objects of masses m1/m2
Explanation:
is defined by Gm1xm2/r^2, where G is a universal constant, and r is the distance between the masses. This shows you why B is wrong; it would increase. Also, A is not a good choice, as shown. In the case of B, it would increase by say, 2/1 to 4/1 by doubling ones mass. In C's case the bottom would decrease on the fraction alot (square) if they were moved closer, thus the force would be greater.
Explanation:
in other words the answer is The gravitational force between them increases
10th grade chemistry pls help!!
Express each answer to the correct number of significant figures.
Answer:
410-52=358
3.054+1.16=4.214
9.7300x10^2
+
9.8700x10^3
[?]x10^[?]
Answer:
1.0843×10^4
Explanation:
If we are to add 9.7300x10^2 + 9.8700x10^3, we must first make the powers of the both to be be the same so that we can carry out any mathematical manipulation of interest. So we can have;
9.7300x10^2 + 98.700x10^2
When we now add the both we have (9.7300 + 98.700)×10^2.
This now gives us the result, 108.43×10^2 which is correctly written as 1.0843×10^4, according to the rules of writing in scientific notation.
explain using diagrams how potassium forms the compound potassium flouride when it reacts with flourine
Answer:
The answer to your question is given below.
Explanation:
Potassium (K) has 19 electrons with electronic configuration of 2, 8, 8, 1.
Fluorine (F) has 9 electrons with electronic configuration of 2, 7.
Fluorine needs 1 electron to complete it's octet configuration.
Hence, potassium (K), will lose 1 electron to fluorine (F) to form potassium ion (K+) with electronic configuration of 2, 8, 8. The fluorine atom (F) will receive the 1 electron from potassium to form the fluoride ion (F-) with electronic configuration of 2, 8.
**** Please see attached photo for further details.
plz answer fast Which is not a crystalline allotrope of carbon? Select one: a. soot b. diamond c. graphite
Answer:
graphite
Explanation:
Graphite is opaque, a very good lubricant, a good conductor of electricity, and a thermal insulator. Allotropes of carbon are not limited to diamond and graphite, but also include buckyballs (fullerenes), amorphous carbon, glassy carbon, carbon nanofoam, nanotubes, and others.
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Which phrase correctly describes the molecular structure within a molecule?(1 point)
A the location of atoms, groups, or ions relative to one another and the number, type, and location of covalent bonds
B long, repeating chains of molecules
C the smallest fundamental unit of a compound that participates in reactions, represented by a bonded group of atoms
D the basic unit of a chemical element
Answer: A the location of atoms, groups, or ions relative to one another and the number, type, and location of covalent bonds
Explanation: I just took the assessment and in my notebook molecular structure has a definition that is literally answer A. Also I got it right lol.
What happens when a metalloid gets heated up?
A: It acts as an insulator and slows the flow of electrons.
B:It blocks the flow of all electrons.
C:It conducts more electricity, allowing electrons to move more freely.
D:It becomes too dangerous for electricity to flow through it.
Answer:
it becomes too dangerous for electricity to flow through it
Does the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth?
Answer:
YES
Explanation:
If we put a plant in a room with an orange light source, then it will grow more efficiently than a plant exposed to other colors.
Yes the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth.
What is wavelength of light ?The wavelength of light can be defined as the distance between the two successive troughs of the light wave, and It is denoted by the Greek letter lambda (λ), simply it can be said as the distance between one crest or trough of one wave and the next wave is known as wavelength.
The Visible Light having wave length ranges from 400 nm to 700 nm and the spectrum of visible light has a number of colors having different wavelengths.
For example, The violet color have the shortest form of wavelength whereas the red color have the longest wavelength, wavelength is inversely proportional to the frequency like longer the wavelength of the light have lower is the frequency.
learn more on wavelength of light, here:
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Is iodine a atom,a molecule,an ion or a formule unit?
Answer:
It's an atom
Explanation:
It can't be a molecule since it's only one element, the ion would've been Iodide (I-), and it's not a formula
muddy water is an example of ______mixtures
Answer:
suspensions of heterogeneous mixtures from which some of particles settle with time.
Answer:
Muddy water is an example of homogeneous mixture.
What three things are required for a fire to start?
which of the following is soluble in water?
1-glycerin
2-sand
3-iron filing
4-oil
Answer:
glycerin
Explanation:
Glycerol is easily soluble in water, because the ability of the polyol groups to form hydrogen bonds with water molecules.
Which of the following apply to organic compounds. Select all that apply. Organic compounds cannot be synthesized. Organic compounds contain carbon. All organic compounds are products of living things. Organic compounds can be synthesized. All compounds that contain carbon are organic.
Answer:
Organic Compounds CAN BE synthesized
Organic Compounds contain Carbon
pls answer this question its important
Answer:
11) B
Explanation:
A characteristic is a feature that helps to identify something. How would you describe the characteristics of a good movie or book?
A characteristic for a movie or book could be how good or bad the plot/story is. You can even get more into detail for movies. Such as, "How was the acting? When the character was sad did you really feel their expressions?" Or so on like that haha. For books, it could be about it's pattern of writing or such, "alliterations, stressed patterens etc. Hope I helped lol.
8th Grade Middle School Science
You measure the mass of an apple using a balance. You get these three measurements:
Trial 1: 167.0 g
Trial 2: 166.9 g
Trial 3: 167.2 g
You know that the true mass of the apple is 172 g. Describe your results in terms of precision and accuracy. Explain your answer.
Answer:
Your results are precise, but not very accurate.
Explanation:
The results are precise because each weight is close to the next. The weights are not accurate because they are pretty far from the true mass.
Answer:
The results of the three trials are accurate because there all very close to the correct mass of the apple is, 172 g. The results are precise because each weight is close to the next. The weights are not accurate because they are pretty far from the true mass.