The image below is part of a computer-generated model representing covalently bonded nonmetal atoms arranged in a crystal lattice. Four small atoms are bonded to each large atom. The structure extends in every direction.
The covalent network solid represented by the model likely
A.
is hard and strong.
B.
has a low melting point.
C.
is an electrical conductor when in the molten state.
D.
is a good conductor of both heat and electricity.
Answers
Answer:
A: is hard and strong
Explanation:
The crystal lattice shown is that of silica, SiO2. For a single molecule of silica to form, the silicon atom would have to form double bonds with each oxygen. Instead, each atom of silicon forms a bond to four different oxygen atoms, each of which is bonded to another silicon atom. This forms a covalent network.
Covalent network solids have the following properties:
They are hard and strong.
They have high melting points.
They usually do not conduct heat.
Silicon dioxide is an electrical semi-conductor.
Hope this helped :)
The structure extends in every direction. The covalent network solid represented by the model likely is hard and strong. Thus option A is correct.
what is covalent network ?
The Covalent Network describes the progressive decentralization of Covalent toward both community-owned and community-run protocol, It has the capabilities like Big data tools compatible, Multi-chain compatible, Storage efficient, Network efficient etc.
Covalent network solids are hard and strong, high melting points, usually do not conduct heat, Silicon dioxide is an electrical semi-conductor.
Covalent networks are large, hard and three-dimensional arrangements of atoms which are bonded together by covalent bond , for example Boron, Carbon and Silicon all form covalent networks.
Thus option A is correct.
Learn more about covalent , here:
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Related Questions
A hurricane sweeps across the ocean and damages the houses of people living along the coast. This is an example of interactions between the
biosphere, atmosphere, and sand
hydrosphere, sand, and biosphere
atmosphere, sand, and hydrosphere
atmosphere, hydrosphere, and biosphere
Answers
Answer:
I think its atmosphere, sand, and hydrosphere
Explanation:
good luck :)
From the video segment about crows in Japan:
What mechanism did the crows use to crack open the nuts for food?
Answers
Answer:
is this ur fist time doing this?
Explanation:
can i know a little more about this pls then i might be able to help!
Quick question. What is this? Should I move out???
Answers
Answer:
thats a bed bug you're screwed
Think and discuss:Suppose you are a farmer trying to grow plants in a greenhouse. Why would it be important to know what the limiting factor is
Answers
Answer:
Because limiting factors affect plant growth
Explanation:
A limiting factor is a condition that limits the population's growth in an ecosystem by slowing or stopping its growth. These factors are generated by the lack or excess of a particular resource. In plants, limiting factors include, among others, light, water, temperature, oxygen, food, (i.e., nutrients and minerals), space, etc. In this case, the farmer must know which greenhouse conditions are limiting factors in order to ensure the survival and optimal development of the plant population.
What is an organism’s phenotype? its specific set of physical traits. the number of genes in its genome. its specific set of genes. the number of nucleotides in its genome
Answers
Answer:
A
Explanation:
Hshsnanwjwjwjw
A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformation are taking place?
choices:
Chemical>light>electrical
Mechanical>sound>light
Thermal>solar>electrical
Electrical>thermal>light
Answers
Answer:
Electrical>thermal>light
Explanation:
Electrical energy refers to energy which is gotten from potential energy. This energy source could be a wall socket.
Thermal energy on the other hand refers to internal energy of a system where temperature is constant.
Light energy is made up of photons which transmits electromagnetic radiation which move in waves and become visible to human eye.
Therefore, the energy transformation taking place according to the question is option D.
The flask with phenolphthalein and NaOH changes color when the ___ gas formed during respiration was passed through the solution. The gas dissolves in the solution and forms____. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a) oxygen..........water b) carbon dioxide.......water c) carbon dioxide........carbonic acid d) nitrogen........ammonia
Answers
Answer:
c
Explanation:
The flask with phenolphthalein and NaOH changes color when the carbon dioxide gas formed during respiration was passed through the solution. The gas dissolves in the solution and forms carbonic.
The dissolution of CO2 into an aqueous solution of NaOH is a two steps reaction.
1. CO2 first reacts with water to form carbonic acid
[tex]CO_2(aq)+H_2O(l) --> H_2CO_3(aq)[/tex]
This makes the phenolphthalein to change color.
2. The product in step 1 reacts with NaOH to form NaHCO3 and water
[tex]H_2CO_3(aq)+NaOH(aq)-->NaHCO_3(aq)+H_2O(l)[/tex]
Hence, the correct option is c.
WHY ARE C-19 (CORONA VIRUS) NOT ACCURATE AS TOLD?
Answers
because it is a new virus that us humans have not experienced and we are still learning about it
What is the elevation for points
A
B
C
D
X
Answers
Answer:
The highest elevation would be x the lowest would be c
What kind of rock is shown in the picture ?
How do you know what type of rock it is ?
Answers
Answer:
Sedimentary
Because it is made is sediments
Explanation:
got it right , edge 2020
The picture shown here is of sedimentary rock. It is visible so because of the identification features of a rock as shown in the image.
What is the formation of rock making process ?The process is that the soil and the sand that gets accumulated and together with the mud gets collected in order to form a hard mass by the passing of time called as rock.
The kind of rock identification is done on the basis of rock identification aspects that are decided for each type of rock that has been kept under observation. In sedimentary rock, the grains and the displacement of rock grains together gives a larger or smaller appearances.
The types of layers and mud particles joined together along with the ripple marks that have been put together shows the marks on the rocks.
Learn more about sedimentary rock at :
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If the organisms in this food chain shown below were arranged in an energy pyramid, which organism would have the most available energy? C SRED producer decomposer primary consumer secondary consumer O producer O decomposer O primary consumer O secondary consumer
Answers
Brainly involved! :) Why is studying animals in the wild considered to be somewhat experimentally "out of control"?
A) There are many factors that cannot be controlled that could influence the study.
B) It does not take place in a laboratory and is therefore not a valid experiment.
C) The test subjects are not trained to behave in a certain manner.
D) The experimenters are as careful with recording their results.
Answers
Answer:
Hmmm i tied between A and C because they both seem correct but since C sounds a little off ima say A
Explanation:
Answer:
A)
Explanation:
Other answers seem to appear only partially correct or not correct at all. If there's anything unclear, feel free to ask.
Leaves serve many functions. Which of the following is NOT a function of leaves?
Answers
Im 4 and my sis is 13. SHE told me she was on her period but then I told her there was this thing called subject and predicate and how she isnt supposed to have a period at the end of her statement because it wouldnt make any sense... and ya, it didnt go well cause' she put on a tantrum.
But the weird thing is that Google said this "Tantrums are most common between the ages of one and four, then decrease when children start school." SO HOW COME I DIDN"T HABE A TANTRUM!! life makes no sense.
P.S: I even saw mom buying DiApERS for her! Like I stopped my diapers and got potty trained about 1 or 2 months ago and IM 4yrs old. SHE IS 13.
man she must have a hard time walking with those things in her short skinny pants.
AND lm A boy by the way.
Answers
Answer:
Stop the cappin
Explanation:
Answer:
Please destroy your tablet.
Explanation:
First of all, why are you on Brainly when you're 4.
And second of all, you're sister is wearing short pants, so she is going through a lot right now. Even 13 year old's have tantrums.
The number of_____in the nucleus is also known as the____number.
Answers
Answer:
The mass number also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.
Answer:
The number of Protons and Neutrons in the nucleus is also known as the Covalent bonds.
Hope I helped!
what are the defining characteristics of the animal cell
Answers
Answer:
in the explanation ALSO PLEASE ANSWER MY LATEST QUESTION PLEASE ITS A TIMED TEST.
Explanation:
animal cells have a nucleus and other membrane-bound organelles Unlike the cells of plants and fungi, animal cells lack a cell wall. This gives animal cells flexibility.
How is the blackjack seed suited to its method of dispersal?
Answers
Answer:
Seeds are widely dispersed through the fruits hook-like bristles that embed themselves in clothing and the fur of mammals and feathers of birds. They are also spread by wind, water and soil.
Explanation:
animal cells have structures that perform specific functions in the cell. Mitochondria are oranelles that float within the cell. Because they produce most of the cell’s energy, mitochondria are nicknamed the “powerhouse of the cell”.
which of the following types of cells would have the greatest number of mitochondria?
skin cell
blood cell
muscle cell
fingernail cell
Answers
Answer:
skin cell because the skin is considered the largest part of the cell tissue based on order.
EXPLAIN 2 DIFFERENCES BETWEEN THE BREAD MAKING ANDALCOHOL PRODUCTION PROCESSES.
Answers
Answer:
Pastry dough is rolled out thinly and used as a base for baked products. Pastry is differentiated from bread by having a higher fat content, which contributes to a flaky or crumbly texture. ... On the other hand, overmixing results in long gluten strands that toughen the pastry.
The kinetic theory of matter states that matter is made up of tiny particles that are in
constant motion. The kinetic theory of matter is most useful in describing which of the
following?
o the relationship between mass and weight
o the relationship between mass and energy
o the relationship between a balance and a scale
the relationship between the motion of particles and their state: solids, liquids, and gases
Answers
Answer:
its D
Explanation:
have a good day
The period during smooth muscle contraction of sustained tension is referred to as the
Answers
Answer:
I could be wrong but I believe the answer is fused tetanus.
Explanation:
Searched it up, but it could be incorrect.
Pls help i dont understand :( will give Brainliest + 25 points!!
Answers
Answer:
commensalism
Explanation:
an association between two organisms in which one benefits and the other derives neither benefit nor harm.
Hope that helps :)
Answer: mutualism
Explanation: because in mutualism it helps both organisms involved... hope this helpsβ
Which set of organelles would be found in both human and lemon tree cells.? F chloroplast,nucleus, and cell wall. G nucleus, endoplasmic reticulum, and cell wall. H mitochondria,nucleus, and endoplasmic reticulum. J mitochondria, chloroplasts, endoplasmic reticulum, and centrioles
Answers
Answer:
Mitochondria, nucleus, and endoplasmic reticulum, and centrioles
Explanation:
trust me
Which process passes genetic material to offspring?
Answers
The Genetic inheritance occurs due to genetic material, in the form of DNA, being passed from parents to their offspring. When organisms reproduce, all the information for growth, survival, and reproduction for the next generation is found in the DNA passed down from the parent generation.
During which phase of meiosis does the separation of homologous chromosomes occur?
Answers
Answer:
In anaphase I, centromeres break down and homologous chromosomes separate. In telophase I, chromosomes move to opposite poles; during cytokinesis the cell separates into two haploid cells.
Let me know if this helps
Thanks :)
Explanation:
Which physical evidence supports the evolution of Earth due to chemical weathering? (10 points!)
a
Hammer shape of Bryce Canyon rocks
b
Red color of Bryce Canyon rocks
c
Streaks on the face of Wave Rock
d
Concave shape of Wave Rock
Answers
Answer: B
Explanation: It is believed that Thor's Hammer started out as a large plateau 40 to 60 million years ago and has slowly evolved through the natural processes of weathering and erosion to its current formation. The red coloring on the rock is due to oxidation, a form of chemical weathering.
Answer: B
Explanation: It is believed that Thor's Hammer started out as a large plateau 40 to 60 million years ago and has slowly evolved through the natural processes of weathering and erosion to its current formation. The red coloring on the rock is due to oxidation, a form of chemical weathering.
How did Claire's digestion reaction weights tell you that the problem was in her small intestine, and not in her stomach
Answers
Answer:
The reaction rate of the digestion helps in understanding which part of the digestive system having trouble in digestion especialy stomach and intenstine related.
It involves the fact that most of the enrgy or calories are get by the small intestine and also vitamins and minerals are absorbed by this part of the digestive system so if the small intestine is having problem the rate of digestion would be affected and and an individual could be malabosrbed.
If the problem lies in the stomach it might show some effects of a poor digestion, however the rate of digestion would be better than if the problem lies in the small intestine.
what is fertilization?
Answers
Answer:
Here is the definition of fertilization: the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote. Or this one: the action or process of applying a fertilizer to soil or land.
Answer:
the action or process of fertilizing an egg or a female animal or plant, involving the fusion of male and female gametes to form a zygote.
The atomic mass of an atom is the weight of
?
Answers
Answer:
No the atomic mass is the same as the atomic number
Explanation:
E. coli Is a species of bacteria that causes many different Infections in humans. Certain E. coli strains have developed resistance to antibiotics,
making Infections with these strains difficult to treat. How do bacteria such as E. coll, which reproduce asexually, galn new tralts such as
antibiotic resistance?
O A. by adapting to changes in environmental conditions without undergoing changes in their DNA
OB. by mutating their DNA in response to environmental conditions to gain beneficial traits
OC. by undergoing spontaneous mutations when they replicate, which increases genetic variation in a population
OD. by producing offspring with new gene assortments from genetic recombination, which increases diversity in a population
Answers
Answer:
The correct answer would be B
Explanation:
Antibiotic resistance in bacteria develops in response to the environment in which the bacteria survives.
The antimicrobial resistance trait is acquired by any species of bacteria through one of the two ways that are either by making changes in their DNA sequences or through horizontal gene transfer mechanisms.
In the given E. coli gained the trait to develop resistance against antibiotic by making changes in their DNA as once the gene is altered or mutated, the trait can be passed on to the offsprings.
Therefore, Option-B is the correct answer.
Answer:
B. By mutating their DNA in response to environmental conditions to gain beneficial traits
Explanation:
Through the process of natural selection, bacteria such as E coli can gain new traits that benefit them.
This can occur when a DNA mutation occurs, where the mutated gene is actually beneficial to respond to environmental conditions.
Then, these bacteria with the gene will survive and produce more offspring with the same gene. This is how E coli can develop antibiotic resistance.
So, B is the correct answer.
