The three general categories into which the elements are divided are metals, nonmetals, or metalloids.
What are elements?Elements are the chemical elements of the periodic table. There are 118 elements in the periodic table. The periodic table displays all the elements according to their atomic numbers.
They are categorized into three terms. They are metals, which are malleable, soft, and luster. Metals are crystalline solid and naturally present in nature. Non-metals are those elements that are hard and brittle and not very reactive.
Metalloids are those elements that have the quality of both metals and non-metals, and they can act like both with time. They are also called semimetals.
Thus, the three general categories are metals, nonmetals, and metalloids.
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Is the c2cl4 molecule polar
Answer:
no
Explanation:
A NON-polar, totally symmetrical molecule like C2Cl4, known as tetrachloroethene, is used for DRY CLEANING clothes because it attracts to the non-polar grease stains that are NOT effectively removed by polar water molecules. The dry cleaning process is NOT dry at all (C2Cl4 is a liquid).
According to the molecular geometry,as C₂Cl₄ molecule is symmetrical it is non-polar.
What is molecular geometry?
Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.
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In a gas, properties such as density and temperature will affect the speed of a wave. For instance, particles in dense, cold air will move a lot slower than particles in hot air. options: True False
Answer:true
I hope this helped! if you need explanation just ask.
State the factors that supports
rusting.
Answer:
water and oxygen
Explanation:
only iron and iron alloys can rust whereas other elements corrode. for rusting to happen, 2 substances need to be present: water and oxygen
Answer:
Metal[Iron]+Water+air[Oxygen]-->Rusting
Explanation:
Rusting is an oxidation reaction.The iron reacts with oxygen and water to form hydrated iron[III]oxide.which is seen as rust due to the change in color [to brown]
In the formula Depth= V(T/2), why is the T (time) divided by 2?
The time taken is 2x the depth of the sea
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
An equation of constant velocity motion
[tex]\large {\boxed {\bold {x = v \times \: t}}}[/tex]
x = distance = m
v = speed = m / s
t = time = seconds
The principle used in measuring depth is to use the reflection of sound waves emitted by the instrument towards the bottom of the sea. The sound will be reflected and received back by the instrument. So that the time taken is 2x the depth of the sea (emitted time + reflected time), so that the calculation of the depth distance must be divided by 2
what is robert hooks main contribution to science?
Answer:
Hi,if its a man by the name of Robert Hooke your looking for information about this is what I found online.Robert Hooke was a English Physicist.He contributed to the discovery of cells while looking at a thin slice of cork. He then thought that cells only exist in plants and fungi.Also in 1665, he published Micrographia.
Hope this is helpful.
Explanation:
I need some help please
Answer:
It is an unstable atom
It would have neutral charge
It would have 8 neutrons
Explanation:
the balanced chemical equation for one neutralization reaction. In your equation, which reactant contributed the salt's positive ion? Which one contributes the salt's negative ion?
Answer:
See the answer below
Explanation:
A neutralization reaction is a reaction that involves acid and base with the production of salt and water as the end products. An example is as below:
HCl + NaOH --> NaCl + H2O
The salt produced here is NaCl. In solution, NaCl will ionize as:
[tex]NaCl --> Na^+ + Cl^-[/tex]
Hence, the salt's positive ion (Na+) was contributed by the base (NaOH) while its negative ion (Cl-) was contributed by the acid (HCl).
05. Select True or False for each.
The absolute location can be identified using the geographic coordinate system.
Lines of longitude run parallel to the Equator.
The Prime Meridian is located at an equal distance from the North Pole and the South Pole.
Jupiter and Pluto are gas giants.
Earth's core is a massive sphere of burning gases that gives off energy.
The tilt of Earth's axis is important to changes in climate on the sun's surface.
Answer:
True
Explanation:
How many moles are in 9.01 g Be
Answer:
1 mol Be
Explanation:
First look at periodic table. Be (Beryllium) has an atomic mass of 9.012
1 mole of Be atoms = 9.012 g Be (this is your conversion factor)
Start with what you are given: 9.01 b Be. Then look at the periodic table. Be has an atomic weight of 9.012g. In order to cancel out the g place how you see here, cross out the g and your are left with mole Be on top. divide 9.01 by 9.012 to get .99977807. round that to 1 mol Be
[tex](\frac{9.01 g Be}{1} )(\frac{1moleBe}{9.012 gBe} )=.99977807 moleBe[/tex]
Which change of state is shown in the model?
condensation
deposition
sublimation
evaporation
Answer:
what model
Explanation:
ill answer if u have model
What is figurative language?
A. language used in a manner that is light and whimsical
B. language used in a manner that implies another, less literal meaning
C. language used in a manner that provides context clues
D. language used in a manner that is direct and straightforward
Answer:
B
Explanation:
literal means actual
The language used in a manner that implies another, less literal meaning is figurative language. Option B is correct.
What is figurative language?Figurative language is a type of language which is written in words and paragraphs which are meaningful and readable but not true or right or litrally true just use for giving examples.
Some examples are love is a battlefield or I am going through a rollercoaster of emotions etc. basically comparison of real-life situations to fictional thoughts or not literally true.
Therefore, option B is correct. The language used in a manner that implies another, less literal meaning is figurative language.
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The best example of an energy transformation is ?
Answer:
riding a bicycle or running!
Explanation:
You can not use energy driving! riding a bike is exercise and running is also♡
Hope it helped luv♡ ;)
Henry is in the community investigating sources of chemical energy for his science experiment. Select the best examples of chemical energy Henry can use.
Answer:
This question is incomplete, the options to this question are:
(A)A gas station and people playing hopscotch
(B)A squirrel eating acorns and a fire burning
(C)Someone reading a book and eating a sandwich
(D)Someone sliding down the slide and someone drinking water
The answer is B
Explanation:
Energy, which cannot be created nor destroyed according to the law of conservation of energy, exists in different forms. These forms of energy are, however, interconvertible. According to this question, Henry is in the community investigating sources of chemical energy for his science experiment.
Chemical energy is one of the forms of energy produced or used up during chemical reactions. Based on the options provided, the best examples of chemical energy Henry can use is "A squirrel eating acorns and a fire burning".
- A squirrel eating acorns is a source of chemical energy Henry can use because chemical energy are stored in the bonds of the food molecule (acorns).
- A fire burning is another source of chemical energy because burning is a chemical process.
Where are elements located based on their mass?
Answer:
they are located on the abbism
I NEED HELP!!! PLEASE HELP ME!!
A store owner needs to hire several new employees to help
with growing demand during the holiday season. Since
many other stores are also hiring at this time of year, the
owner decides to offer each new employee a holiday
bonus and a fairly high hourly wage to make sure she can
attract top candidates.
The passage is most focused on which factor of production?
O A. Labor
O B. Land
O C. Entrepreneurship
O D. Capital
Answer:
A
Explanation:
The amount of work is a strong factor that changes production.
A light emitting diode (LED) glows when an electric current moves in one direction but not the other. What type of material is LED
A).conductor
B).insulator
C).semiconductor
D).capacitor
Answer:semiconductor
Explanation:a solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects. Devices made of semiconductors, notably silicon, are essential components of most electronic circuits.
Complete the following equations (note that the equations are not balanced). Use the activity series if
necessary.
Li>K> Ba > Sr > Ca > Na > Mg > AI > Mn > Zn > Cr> Fe > Cd >
CO > Ni > Sn > Pb > H > Sb > Bi > Cu > Ag > Pd > Hg > Pt> Au
C3H2 +02 →?
C + H20
CH3OH + H2
CO2 + H2O
Chemistry
Answer:
CO2+H20 for the first question, AlCl3 + Ag for the second or C and B
Explanation:
I am looking at it right now on Edge
c) CO₂ + H₂O
C₃H₈+O₂→ CO₂ + H₂O
Explanation:
Firstly we need to know about combustion, it is a chemical process which involves the reaction of a substance with oxygen.
The chemical reaction given below represents the combustion of propane which yields to the production of carbon dioxide and water molecule.
C₃H₈+O₂→ CO₂ + H₂O
The balanced chemical reaction is represented below:
C₃H₈ +5O₂ → 3CO₂ + 4H₂O
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Lucas and Will are in an arm wrestling match. Lucas is pushing with a force of 55 Newtons. Will is pushing with a force of 62 Newtons. Who would win the arm wrestling match? Explain why. Use at least 3 complete sentences using vocabulary and examples from the lessons:
Answer:
This question is incomplete.
Explanation:
However, Will should win the match if other conditions are the same between the two of them. This is because Will is pushing with a higher force (of 62 Newtons). This is because the higher the force, the higher the workdone. The formula associated to the workdone here is
Workdone = Force × distance
Wetlands are low laying lands that are constantly wet. What most occur for wetlands to be drained.
A. Wetlands cannot be drained.
B. Water must be removed from from the surface of the lands until it is dry.
C. Surface water in the wetlands must be routed below ground.
D. Groundwater must be removed in sufficient quantities to drop the water table.
Answer:
I think it's choice C because if we route it below the ground the surface will remain dry wild underground will be wet which will be good for soil and its fertility I think that's the answer
How many atoms of N are there in 30.0 g of NH4NO3?
Describe a basic system model.
Answer:
A systems model is a process-oriented representation that emphasizes influences, or flow, of information between modules. A systems model describes how processes interact and what operations these processes perform, but it does not go into details as to how these processes are implemented.
What does the kinetic theory state about the relationship between the speed and temperature of gas molecules?
ОА. .
As the temperature increases, the speed of gas molecules remains constant.
OB
As the temperature increases, the speed of gas molecules decreases,
ОС. .
As the temperature increases, the speed of gas molecules increases.
OD
As the speed of gas molecules increases, the temperature becomes constant.
OE
As the temperature decreases, the speed of gas molecules increases.
Answer:
The kinetic molecular theory can be used. Temperature is increased, so the average kinetic energy and the rms speed should also increase. This means that the gas molecules will hit the container walls more frequently and with greater force because they are all moving faster.
Explanation:
what is the scientific definition of heat?
Answer:
Most of us use the word 'heat' to mean something that feels warm, but science defines heat as the flow of energy from a warm object to a cooler object. ... Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases
why do scientists look for patterns in the world
Answer:
So if they find something that looks illogical they can find thing that are loggical and see if there just put together
Explanation:
You have 2.30 cm3 of Pt. Platinum is selling for $28.10/gram. How much Platinum do you have? Density of platinum is 21.45 g/cm3.
How do hydrogen bonds compare with other intermolecular forces?
A. Hydrogen bonds are stronger than dipole-dipole and van der waals forces.
B. Hydrogen bonds are weaker than dipole-dipole and Van der Waals forces
C. Hydrogen bonds are weaker than dipole-dipole forces but stronger than Van der Waals forces.
D. Hydrogen bonds are stronger than dipole-dipole forces but weaker than Van der Waals forces.
Answer: A
Explanation: Hydrogen bonds compare with other intermolecular forces because of that fact that they are stronger than other Van Der Waals forces. So, the answer to the question should be A.
Hope this helps!
Answer: it's A
Explanation: finished the quiz
Which of the following could be an appropriate citation for an article with 3 authors?
A. Jones, Davis, and Young, 2012
B. Davis, 2012
C. Jones, D and Y, 2012
D. Jones, et al., 2012
Answer:D
Explanation: if you have more than 2 authors , you cite the article by using the last name of the author followed by the phrase “et al”
APA- style citation is a writing format to mention and cite the sources in the journals and papers. Citation for an article with 3 authors is given as, Jones, et al., 2012. Thus, option D is correct.
What is APA- style citation?APA- style citation is the format given by the American Psychological Association. It is a citation style that quotes the author's last name and date. The data quoted are enclosed in parentheses. For example, (Robert, 1997)
Unlike MLA, the APA citation style capitalizes only the titles and proper nouns. The tiles in the source are written in italics. The in-text and the reference list of the citation differ a little.
When a source contains three authors then, the APA citation style writes the last name of the author followed by the et al., and the year like Jones, et al., 2012.
Therefore, option D. Jones, et al., 2012 is the correct APA citation style.
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Plz help!
Sodium and Iodine combine to form an ionic compound. Sodium contains 1 valence electron and iodine has 7. Which is going to be the one to lose an electron and which will gain an electron to form ions and create the bond?
Answer: Ionic compounds/bonds don’t lose electrons. They transfer electrons
Explanation: Sodium is going to get the +7 charge and Iodine will not need to have a charge beside it. Your formula should look like this Na7I
- properly balance this equation?
AgNO3 + H2S Ag2S+ HNO3
Answer:
2AgNO3 + H2S => Ag2S + 2HNO3
Explanation:
Which of the following is true about the organization of living
things?
a
cells are organized into tissues
b tissues are organized into cells
С
organs are organized into organelles
d
organ systems are organized into tissues