compare molecular & covalent network crystal solid?
Answers
Answer:
Molecular solids and covalent network solids are two types of solid compounds. The key difference between molecular solid and covalent network solid is that molecular solid forms due to the action of Van der Waal forces where as covalent network solid forms due to the action of covalent chemical bonds.
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Related Questions
What is the nuclear equation for decay of Am - 241
Answers
Americium is a radioactive element .
It goes through alpha decay during nuclear reactions .The nuclear reaction.is given by
[tex]\rm {}^{241}_{95}Am\longrightarrow {}^{237}_{93}Np+{}^4_2\alpha[/tex]
Np stands for NuptuniumHere alpha can be written as He too
how do you treat a sulfuric acid burn with sodium hydroxide
Answers
Could someone help me with this please
Answers
Answer:Your can use the internet There is a web site that is called periodic table.com it is very use full
Explanation:Have fun
A solvent is added to dissolve only one mixture component and then the liquids are separated. Choose... A liquid is carefully poured out, leaving the solid behind in the container. Choose... A solid is caught on paper or a membrane while the liquid passes through. Choose... A solid mixture is heated. One component transitions directly between solid and gas. Choose...
Answers
The solid would be caught on a filter paper or membrane while the liquid passes through.
FiltrationFiltration is used to separate a mixture of insoluble substances in a liquid.
Since the aim is to separate the insoluble component of the mixture from the liquid, filtration using a suitable filter paper or membrane will be the way out.
The liquid will pass through the filter paper or the membrane while the insoluble component will be caught. This can then be dried and collected accordingly.
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An atom has eight protons and nine neutrons. draw the atomic structure of the atom
Answers
draw eight electrons (since electrons = protons in neutral elements) outside of it (2 in one ring, then 6 in a second ring)
An atom has eight protons and nine neutrons. The atomic structure of the atom is attached below in image.
What is an atomic structure ?The term "atomic structure" describes the structure of an atom, which has a nucleus that contains both protons and neutrons . The centre of the nucleus is circled by the negatively charged electrons.
The smallest piece of ordinary matter within an element is called an atom. Protons, neutrons, and electrons are the three subatomic particle types that make up an atom.
An isotope's number is equal to the sum of its protons plus neutrons since their masses are almost identical. Oxygen 16 therefore has 8 protons and 8 neutrons, followed by oxygen 17 with 8 protons and 9 neutrons, and oxygen 18 with 8 protons and 10 neutrons.
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In the photo
Pls pls pls pls pls pls pls pls pls pls
Answers
When an object has potential energy, it means that the object has pent up energy that isn’t being used yet. It is about to do something, but it is at the climax and hasn’t done it yet. For example, if you’re winding up your arm, ready to throw a ball, the energy in the ball isn’t released yet. But, if you were to throw it, it now has kinetic energy.
Kinetic energy happens when an object is in motion. While it is moving, it releases kinetic energy, like my ball example.
Hope this helps! :)
The correct answers are Potential and Kinetic energy.
What are potential energy and examples?An object can store energy as a result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as a result of its position.
What is kinetic energy?Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
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Avogadro’s number is the number of particles in one mole of a pure substance, true or false?
Answers
Answer: The answer is true.
Explanation: Avogadro's number is a mole, which concludes that this statement is true.
Which lists only abiotic factors in this environment?
grass, tree, rock, soil
bird, turtle, grass, tree
sun, water, grass, soil
water, rock, soil, sun
Answers
In this case, among the list of components given, the abiotic factors are water, rock, soil, and sun.
What is an abiotic factor?An abiotic factor is a non-living part of an ecosystem that shapes its environment.
Biotic and abiotic factors make up a community via interaction.
Biotic factors are considered living things (having "life") while abiotic factors are simply non-living things.
Hence, in this case, among the list of components given, the abiotic factors are water, rock, soil, sun
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Is industry pool or flux
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Answer:
What is the difference between pools and fluxes?
Image result for Is industry pool or flux
Fluxes describe the movement of energy and matter between different pools. When you pour a glass of juice for yourself, the juice bottle and the glass are both “pools” for the apple juice. The act of pouring it from the bottle to the glass is the flux
Explanation:
Calculate the ionization constant of each reaction. hcl (aq) + h2o (l) equation h3o+ (aq) + cl- (aq); [hcl] = 16.9m, [h3o+] = 13.3m, [cl-] = 7.4mka =
Answers
The ionization constant from the reaction as shown in the calculation is 5.8.
What is the ionization constant?The term ionization constant refers to the extent to which the acid is ionized in solution. It is calculated from;
Ka = [H3O^+] [Cl]/[HCl]
Thus when we substitute the values;
Ka = 13.3 * 7.4/ 16.9
Ka = 5.8
The ionization constant from the reaction as shown in the calculation is 5.8.
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The pressure of x ml of a gas was increased from 2 atm to 4 atm at constant temperture. what will be the new volume?
Answers
The new volume of the gas given the data from the question is 1/2X mL
Data obtained from the question
Initial volume (V₁) = X mL
Initial pressure (P₁) = 2 atm
New pressure (P₂) = 4 atm
New Volume (V₂) = ?
How to determine the new volume
The new volume of the gas can be obtained by using the Boyles’ law equation as illustrated below:
P₁V₁ = P₂V₂
2 × X = 4 × V₂
2X = 4V₂
Divide both side by 4
V₂= 2X / 4
V₂ = 1/2X mL
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if this strand is replicated what is the complementary strand that is produced
Answers
Answer:
During DNA replication, each of the two strands that make up the double helix serves as a template from which new strands are copied. The new strand will be complementary to the parental or “old” strand. Each new double strand consists of one parental strand and one new daughter strand.
Explanation:
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The process of seeping of water into the ground in called
Answers
Answer: Infiltration
Explanation: it is the process by which surface water, rainwater or snowmelt seeps into the ground
You can make a solution (solid solute) more concentrated by
adding more solute
O increasing the pressure
adding more water
adding more solvent
Answers
Answer:
increasing the pressure
Explanation:
You can make a solution more concentrated by increasing the pressure.
how can you explain that even though you continue to add pure water into a substance, even though the resultant ph might differ a little, the acidity or alkalinity of substance still remains the same to that of substance?
Answers
Addition of pure water does not change pH of a solution because pure water has neutral pH.
Why the pH does not change when pure water is added?Even though you continue to add pure water into a substance, the acidity or alkalinity of substance still remains the same to that of substance because pure water has neutral pH which can't change the acidity or alkalinity of a solution.
So we can conclude that addition of pure water does not change pH of a solution because pure water has neutral pH.
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Which type of scientist would most likely study how electricity could be
produced more efficiently?
Answers
Electrical engineers are the scientists that study the production of electricity more efficient.
Which type of scientist would study how electricity could be produced more efficiently?
Electrical engineers are the type of scientist that would most likely study how electricity could be produced more efficiently because they produced new technologies which are cost efficient as well as produce high amount of electricity.
So we can conclude that electrical engineers are the scientists that study the production of electricity more efficient.
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Which of the following lists electromagnetic radiations from lowest to highest energy?
Your answer:
radio waves, microwaves, ultraviolet radiation, visible light
microwaves, radio waves, visible light, X-rays
radio waves, infrared radiation, visible light, ultraviolet radiation
gamma radiation, infrared radiation, visible light, X-rays
Answers
Answer:
Highest wavelength : radio waves
So lowest energy: radio waves
Hence order is:
radio waves < microwaves < IR waves < visible light < ultraviolet radiation < X-rays < gamma rays
Describe the difference between the rate of diffusion seen for sodium and urea.
Answers
When energy decreases what happens to particle motion?
Answers
Answer:
When a substance is cooled, its internal energy decreases: the movement of its particles decreases. bonds between particles form when a substance condenses or freezes, or sublimes to form a solid from a gas. What is called energy? Energy is the capacity of a physical system to do work.
Explanation:
At what temperature would 0.46 moles of a gas occupy 13.3 L if the pressure is 734 mm Hg?
Answers
Answer: 341.6k
Explanation:
R= 0.0821
n= 0.46moles
v= 13.3L
p= 734mmhg = 734/760 = 0.97
[tex]T = \frac{p*v}{n*R}[/tex]
[tex]T = \frac{0.97*13.3}{0.46*0.0821}[/tex]
T= 341.6k
Answer:
10100101
Explanation:
this is for the other person alt.
How many particles would be found in a 12.7g sample of ammonium carbonate?
answer choices are:
2.9 x 10^22 particles
7.96 x 10^22 particles
i cannot get it, please help
Answers
multiplying terrorist to power 23, divided by 96. Multiplied by 12.7. so this is 76.48
7.96 x 10²² particles would be found in a 12.7g sample of ammonium carbonate. A particle is a tiny, localized item.
What is particles in chemistry?A particle is a tiny, localized item that may be defined by a number of physical or chemical characteristics, including volume, density, and mass. They range significantly in size or number from tiny particles like atoms to subatomic particles such as the electron.
Depending upon their density, particles can potentially be utilized to mimic even bigger things, such as moving celestial bodies or a throng of people. Although the meaning of the word particle is quite broad, different scientific disciplines might refine it as necessary. Any substance made up of particles is referred to as a particulate.
number of moles = given mass/ molar mass
= 12.7/ 96.08
= 0.13moles
number of particle= 0.13 × 6.022×10²³
= 7.96 x 10²²
Therefore, 7.96 x 10²² particles would be found in a 12.7g sample of ammonium carbonate.
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9. (05.06 mc)
during an experiment, the percent yield of calcium chloride from a reaction was 80.34%. theoretically, the expected amount should have been 115 grams. what was the actual yield
from this reaction?
caco, + hc - cacl + co, + h20 (5 points)
a. 090.1 grams
b. 92.4 grams
c. 109.2 grams
d. 115.3 grams
Answers
The actual yield of the experiment given the data from the question is 92.4 g (Option B)
What is percentage yield?This is the ratio of the actual yield to the theoretical yield of a given reaction multiplied by 100
Percentage yield = (Actual / Theoretical) × 100
What is actual yield?This is the amount obtained from the expriment procedures
What is theoretical yield?This is the amount obtained from simple calculations as regarding the experiment.
How to determine the actual yieldPercentage yield = 80.34%Theoretical yield = 115 gActual yield =?Actual yield = percentage yield × theoretical yield
Actual yield = 80.34% × 115
Actual yield = 0.8034 × 115
Actual yield = 92.4 g
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What mass of Na2CO3 will be required to dissolve in 0.3 L of water to make a 0.5 M solution?
Answers
The mass of [tex]Na_2CO_3[/tex] that will be required to be dissolved in water would be 15.9 grams
Solution preparationRecall that: molarity = mole/volume in L
In this case, the volume is 0.3 L and the molarity is 0.5 M.
Thus, mole = molarity x volume = 0.5 x 0.3 = 0.15 moles
Mass of 0.15 moles [tex]Na_2CO_3[/tex] = 0.15 x 106 = 15.9 grams
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What happens when a solid is dissolved into a liquid?
O Solid particles float toward the surface layer of liquid particles.
O Solid particles sink down toward the bottom layer of liquid particles.
O Solid particles become evenly dispersed among liquid particles.
O Solid particles become suspended in the middle of liquid particles.
Answers
When a solid dissolves in a liquid to form a solution, solid particles become evenly dispersed among liquid particles.
What are solutions?Solutions are formed when a solute particle dissolves in another substance known as a solvent.
Usually, solutions are formed when solids dissolve in liquids.
The solid is the solute while the liquid is the solvent.
When a solid dissolves in a liquid, solid particles become evenly dispersed among liquid particles.
Therefore, solutions are formed when solute particles dissolve in solvents.
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Answer:
c
Explanation:
chem ed 2022