Answer:
For a dot structure, I will explain it.
Explanation:
So there's an S (the symbol for Sulfur) and on the top, there are two dots, as well as two on the left side. On the bottom and right of the symbol, there is only 1 dot on each of these sides.
The correct Lewis structure for the sulfur atom has six dots. These six dots are distributed in such a way that two dots are present at the top, two are on the left side, and one each is on the bottom and right side.
What is Lewis's structure?Lewis's structure may be defined as a structural representation of a molecule where dots are used to show electron positions around the atoms and lines or dot pairs represent covalent bonds between atoms.
Sulfur has an atomic number of 16. Its electronic configuration is 2, 8, and 6. It represents that the sulfur atom has six valence electrons. These six electrons are represented by dots in the Lewis structure.
Each sulfur atom is connected to an identical atom on either side by single covalent bonds. This ensures the sulfur completes its octet.
Therefore, the correct Lewis structure for the sulfur atom has six dots.
To learn more about Lewis's structure, refer to the link:
https://brainly.com/question/6224949
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True or False: Air pollution contributes to global warming.
A. True
B. False
Now run this simulation that demonstrates the properties of gases. The simulation shows a container with a lid on top. The lid can be opened and closed by dragging it left and right. On the left side of the container is a yellow handle. Drag this handle right or left to decrease or increase the volume of the container. On the top right of the container are a thermometer and a pressure gauge. Follow these steps to use the simulation, and then answer the question that follows. 1. Reduce the container to its least volume by dragging the yellow handle as far right as you can. 2. In the Gas in Chamber menu, add 80 molecules of heavy species to the container. 3. In the Constant Parameter menu, select Pressure. 4. Increase the number of heavy species molecules to 200. What do you observe when the molecules are increased from 80 to 200 at constant pressure?
link http://contentstore.ple.platoweb.com/content/sharedmedia/phet_sims_batch2/gas-properties/gas-properties_en.html
Answer:
The pressure will increase linearly if you increase the moles/molecules of gas
Explanation:
Calculate the formula weight or molecular for the following:
a. LiCI
b. SO2 (The 2 is in subscript)
Answer:
42.39, 64.06
Explanation:
Formula Weight can be calculated by adding the atomic mass of the elements in the formula.
LiCl
AM for Li is 6.94 amu, AM for Cl is 35.45 amu
[tex](6.94)+(35.45)=42.39[/tex]
SO₂
AM for S is 32.06 amu, AM for O is 16 amu
[tex](32.06)+2(16.00)=64.06[/tex]
How does nitrogen-fixing bacteria make nitrogen available to plants and animals?
Answer:
hi thxs for the points now bye
Answer:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.
Explanation:
Hope It Help
what is the kg of the net force is 30 N and the acceleration is 6 m/s 2
Answer:
5kg
Explanation:
Use the law: F=MA
F= force which is newton
M= mass which is kg
A= acceleration which is [tex]m/s^{2}[/tex]
What category of biological molecules are steroids included in?
Answer:
Lipids
Explanation:
Lipids are a class of macromolecules that are nonpolar and hydrophobic in nature. Major types include fats and oils, waxes, phospholipids, and steroids.
Hope this helps!
Which shape is being shown by the model?
Faces:
13. Explain why a solution containing both NH3 and NH4Cl is less basic than a solution
containing only NH3 of the same concentration.
Answer:
In a solution containing ammonia solution and ammonium chloride, ammonia hydrolyses in water to produce hydroxyl ions.
NH3 +H2O → NH4+ + OH-
Ammonium chloride ionises in the solution to produce ammonium ions and chloride ions where the ammonium ions undergo hydrolysis to produce more ammonia solution.
[tex]NH _{4} Cl→NH _{4} {}^{ + } + Cl {}^{ - } [/tex]
What is the molarity of 2.5 mol of H2SO4 dissolved in 1.00 L of solution?
Need FAST!
Answer:
2.5 M H2SO4
Explanation:
2.5 mol / 1.00 L = molarity of 2.5
answer with explanation and you get brain list
Answer:
B.
Explanation:
There are the same amount of black circles in the reactant and product. There are also the same amount of white circles in the product and reactant.
what metric unit would be most appropriate to use when measuring the length of a paperclip?
A. millimeter
B. kilometer
C. decimeter
D. centimeter
centimetres
Explanation:
centimetres
Answer:
D. Centimeter is used when measuring the length of a paperclip
Match the procedural step to its purpose by dragging each step in the written procedure for the Fischer esterification of benzoic acid with methanol in the presence of mineral acid into the appropriate box. Purpose: Flat-bottomed flasks transfer heat in an uneven fashion, and may fracture if heated strongly. Procedure: Purpose: Methanol, which is used as a reagent and solvent, is flammable. Prodedue: Purpose: The unreacted carboxylic acid was neutralized under mild conditions. Procede: Purpose: Water needs to be removed before the liquid ester product is collected. Procedure:
Answer:
Explanation:
The task in this question is to match the right procedure to its purpose. It explains the procedure for the preparation of Fischer Esterification. Fischer Esterification Mechanism should incorporate the ceaseless expulsion of water from the framework or the use of a huge amount of excess alcohol since the general reaction is reversible. Fischer Esterification act as an organic reaction that is utilized to change over carboxylic acids within the sight of excess alcohol and a solid corrosive catalyst (acid) to give an ester as the eventual outcome.
Procedure Purpose
[tex]\text{Flat bottomed flask transfer}\\ \\ \text{ heat in an uneven fashion and } \\ \\ \text{ may fracture if heated strongly}[/tex] [tex]\text{The reagents were added to a} \\ \\ \text{round bottom flask prior to the }\\ \\ \text{reaction being heated under reflux}[/tex]
[tex]\text{Methanol which used as a reagent} \\ \\ \text{and solvent is flammable}[/tex] [tex]\text{The solution of benzoic acid and }\\ \\ \text{methanol was heated on steam bath}[/tex]
[tex]\text{The unreacted carboxylic acid was} \\ \\ \text{neutralized under mild conditions}[/tex] [tex]\text{The reaction mixture was washed} \\ \\ \text{ with sodium bicarbonate solution}[/tex]
[tex]\text{Water needs to be removed before the} \\ \\ \text{ liquid ester product was collected}[/tex] [tex]\text{Magnesium sulphate is added to the} \\ \\ \text{ dichloromethane layer before} \\ \\ \text{ the solvent is distilled off}[/tex]
What do these two changes have in common? Shaking up salad dressing. Adding dish soap to water in a sink
Help please...........
2.0 mole of water at STP would occupy what volume?
a) 22.4
b) 22.7
c) 44.8
d) 45.4
plzzz help me
i really kinda need some hell right now :)
The molecule with only single covalent bonds is _. (C) *
CO2
СО
CI2
ON2
Answer:
CO (carbon monoxide)
Explanation:
Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.)
The given question is incomplete. The complete question is:
Write the electron configuration for [tex]Ca^+[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Ca^{2+}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Se^{2-}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]S^{2-}[/tex]. (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.)
Answer:
[tex]Ca^+:19:[Ar]4s^1[/tex]
[tex]Ca^{2+}:18:[Ar][/tex]
[tex]Se^{2-}:32:[Ar]3d^{10}4s^24p^2[/tex]
[tex]S^{2-}:18:[Ar][/tex]
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies. The positively charged species are formed by loss of electrons and negatively charged species are formed by gain of electrons.
[tex]Ca:20:[Ar]4s^2[/tex]
[tex]Ca^+:19:[Ar]4s^1[/tex]
[tex]Ca^{2+}:18:[Ar][/tex]
[tex]Se:34:[Ar]3d^{10}4s^24p^4[/tex]
[tex]Se^{2-}:36:[Ar]3d^{10}4s^24p^6[/tex] or [tex]Se^{2-}:36:[Kr][/tex]
[tex]S:16:[Ne]3s^23p^4[/tex]
[tex]S^{2-}:18:[Ne]3s^23p^6[/tex] or [tex]S^{2-}:18:[Ar][/tex]
24. Explain what happens at the particle level when a solid melts.
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. ... At this point the solid is melting to form a liquid. The particles in the liquid are the same as in the solid but they have more energy.
Explanation:
sana maka help
thats ridiculously ridiculous
Answer: beautiful
Explanation:
A gas occupies 5.31 liters at a pressure of 0.55 atm. Determine the volume at standard pressure.
A. 2.92
B. 8.28L
C. 3.54 L
D. 9.65L
Answer:
Option A; V = 2.92 L
Explanation:
If we assume a lot of things, like:
The gas is an ideal gas.
The temperature is constant.
The gas does not interchange mass with the environment.
Then we have the relation:
P*V = n*R*T = constant.
Where:
P = pressure
V = volume
n = number of moles
R = constant of the ideal gas
T = temperature.
We know that when P = 0.55 atm, the volume is 5.31 L
Then:
(0.55 atm)*(5.31 L) = constant
Now, when the gas is at standard pressure ( P = 1 atm)
We still have the relation:
P*V = constant = (0.55 atm)*(5.31 L)
(1 atm)*V = (0.55 atm)*(5.31 L)
Now we only need to solve this for V.
V = (0.55 atm/ 1 atm)*(5.31 L) = 2.92 L
V = 2.92 L
Then the correct option is A.
An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
The answer is 553
Answer:
553
Explanation:i did this question today and it was right!
Are real or ideal gases used in labs?
Describe the stages of water cycle
Sort the numbers based on the number of significant figures they have.
Drag each tile to the correct location.
One Significant
Figure
Two Significant
Figures
Three Significant
Figures
Four Significant
Figures
Answer:
I think one significant figure??
50 points
In the image below, light is displayed as particles called photons. Research to find out what photons are and then explain in your own words why they can be useful for modeling light.
Answer:
A photons is a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
Explanation:
Light consists of packets of energy (photons) that can only interact with the atoms and molecules of matter by being absorbed or emitted in discrete units. ... Photons carry momentum and energy like particles, but they also have a frequency and a wavelength like a sinusoidal wave. Thanks to photons we know that all quantum particles have both the properties of waves and particles. I hope it helps✌️
Match it, I’m not sure which category they go in
Answer:
Endothermic is something that needs heat added into it, while exoteric gives heat off
Explanation:
1. Endo(Melting ice)
2. Endo(heat enters the system)
3. Exothermic(making ice)
4. Endothermic( liquid to gas)
5. Exothermic(campfire)
6. exothermic(gas to a liquid)
7. Exothermic (the flame of a candle)
8. Exothermic (heat leaves the system)
9. I don’t know if photosynthesis is exo or endothermic
Why is having a healthy lion population in an African savanna important for maintaining biodiversity in that ecosystem?
C
If the population of lions decreases, there would be less water available for other animals like zebras and antelopes, leading to drought in the ecosystem.
.
The lions are better at hunting animals like zebras and antelopes, ensuring that other predators like cheetahs and hyenas will be outcompeted and eventually become
extinct.
.: +
O
The lions eat enough of the zebras, antelopes, and other plant-eating animals to ensure that they do not overgraze the grass and trees, leading to starvation of the other
animals.
Without the lions to eat animals like zebras and antelopes, there would be fewer predators to consume these animals, causing the zebras and antelopes to consume each
other.
K
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AQDd
1:45 PM
3/11/2021
Answer:c
Explanation:
The healthy lion population in the African savanna has been important as the decrease in the population of lions results in the increase in the increased population of zebras and antelopes and thereby the increased overgrazing. Thus, option C is correct.
In an ecosystem, the biotic components have been arranged in the pyramidical order that has been able to maintain a healthy ecosystem.
The increase or decrease in the level of the ecosystem results in the disturbed ecosystem and thereby the biodiversity. The African savanna has been the forest ecosystem. It has been photosynthetic plants, followed by primary, secondary, and tertiary consumers.
The lion has been the secondary consumer in the forest system. The lions have been able to consume the primary consumers and maintain the balance in the ecosystem.
However, with the decrease in the lion population in the ecosystem, there has been a proportional increase in the population of the primary consumers such as zebras, and antelopes.
The increase in primary consumers results in overgrazing and thereby the starvation of other primary consumers with a decrease in the producers.
Thus, a decrease in the lion population results in disturbing the biodiversity of the ecosystem with an increase in the population of zebras and antelopes. Thus, option C is correct.
For more information about the African Savannas ecosystem, refer to the link:
https://brainly.com/question/4088008
5.
Which is the best example of Newton's Second Law of Motion?
Answer:
ok so if I remember correctly then it basically its like if I have a baseball and throw it full force the the ball will go far because the mass is light and the force was great but if I get a bowling ball and do the same with equal force it will go shorter than the base ball because the mass if more than the force I put in
How many moles of H20 are needed to produce 1 mole of O2 in the following equation?
2H2O + 2H2 + 102