Answer/Explanation:
[1] The difference in electron movement between ionic and covalent bonding is ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms.
[2] One way you can predict if a bond would be ionic or covalent based on the location of the elements on the periodic table is to look how far apart the two atoms forming the bonds are in the periodic table. If one atom is on the far left (Group 1 or 2) and the other is on the far right (Group 5, 6, or 7), then the atoms will have large differences in EN and will form an ionic bond.
[3] You can predict if a bond would be ionic or covalent based on electronegativity is If the electronegativity difference is less than 0.5, then the bond is nonpolar covalent. If the ΔEN is between 1.6 and 2.0 and if a metal is involved, then the bond is considered ionic. If only nonmetals are involved, the bond is considered polar covalent.
[4] In Order for bonds to break in reactants Molecules must collide in order to react. In order to effectively initiate a reaction, collisions must be sufficiently energetic (kinetic energy) to break chemical bonds.
[5] The height of an object affect the amount of gravitational potential energy it has by gravitational potential energy (P.E) depends on the mass of the body and the height at which it travels, the two quantities will therefore dictate the work done on the object which is eventually the same as magnitude of the gravitational potential energy P.E. It is assumed that gravitational pull acts toward the earth surface. The more the object move upward the more the work is done on the object to pull it down. We can have different masses of object at different heights, but gravitational field strength will always remain constant on earth.Since the gravitational potential energy P.E depend on the mass of the body and the height at which it travels, the two quantities will therefore dictate the work done on the object which is eventually the same as magnitude of the gravitational potential energy P.E.
[6] Kinetic energy is a form of energy that an object or a particle has by reason of its motion.Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
[7] The connection between kinetic energy and temperature is the relationship between temperature and kinetic energy is that the higher the temperature, the more kinetic energy there is. As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container.
[RevyBreeze]
how many moles of AI are necessary to produce 5.92 miles of hydrogen gas
Answer:
ok
Explanation:
why I needed to give a answer to a question. I want to ask the question. brainly solve this issue. i cant ask questions without answering to 1 questions.
What type of bond holds the complementary bases together?.
Answer:
hydrogen bonding
Explanation:
The two strands of DNA are held together by hydrogen bonds between complimentary nucleotides.
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all of them are right
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Which consumers are cornivores
Answer:
Carnivores and omnivores are secondary consumers. Many carnivores eat herbivores. Some eat omnivores, and some eat other carnivores. Carnivores that consume other carnivores are called tertiary consumers.
E.g
Felines, ranging from domestic cats to lions, tigers, and other large predators.
Some canines, such as the Gray Wolf
Hyenas.
ferrets.
Polar Bears.
Pinnipeds ( seals, sea lions, walruses, etc.)
Birds of prey, including hawks, eagles, falcons, and owls.
Why does metal expand when heated?
Answer:
Metal expands when heated. Length, surface area and volume will increase with temperature. ... Thermal expansion occurs because heat increases the vibrations of the atoms in the metal
Explanation:
hope this help :)
Answer:
Length, surface area and volume will increase with temperature.
Explanation:
Metal expands when heated. Length, surface area and volume will increase with temperature. ... Thermal expansion occurs because heat increases the vibrations of the atoms in the metal
A large hamburger sandwich contains 628 kcal and 36 grams of fat. Approximately what percentage of the total energy is contributed by fat
The percentage of the total energy contributed by fat = 51.59% of fat
Calculation of total energy in fatThe quantity of fat in the hamburger = 36grams
But 1 gram of fat = 9 kcal( standard energy value per gram of fat).
That is , 9kcal = 1 gram
X kcal = 36 grams
cross multiply,
X kcal = 9 × 36
= 324kcal
To calculate the percentage of 324kcal of fat in 628 kcal,
[tex]\% = \frac{324}{628} \times \frac{100}{1} [/tex]
[tex]\% = \frac{32400}{628} [/tex]
% = 51.59% of fat
The percentage of the total energy contributed by fat = 51.59%
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38. Assuming a sample mixture made from sand and sugar had a mass of 53.5 g, and
it was separated using decantation and boiling to remove the water used in the
separation procedure, what is the mass percent of sugar in the sample assuming 35.2
g of sugar was recovered, and 16.0 g of sand was recovered?
A.66%sugar
B.4%sugar
C.30%sugar
39. Using the information from question 38 what is the total percent recovery for the separation? Is the percent recovery greater than less than 100% why might this be the case?
The Mass percent of sugar in the sample was 66% while the Total percent recovery is 95.7%
Equation
An equation is an expression used to show the relationship between two or more variables and numbers.
Given the sample had a mass of 53.5g, hence:
Mass percent of sugar in the sample = (35.2/53.5) * 100% = 66%
Total percent recovery = [(35.2 + 16)/ 53.5] * 100% = 95.7%
The Mass percent of sugar in the sample was 66% while the Total percent recovery is 95.7%
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I need help with this whoever helps will get a surprise
Answer:
wish it helps anything else comment at my answer
In Florida, the beaches are often exposed to hurricanes originating in the Atlantic Ocean. Which of the following is the most reasonable prediction of what could result from a hurricane?
OPTIONS
Creating of new rivers at high elevations
Movement of sand from the beach to offshore sandbars
The generation of local earthquakes after the storm
The creating of new river deltas along the beaches
Answer:
who's asking?
Explanation:
What is the name of Cu4C?
Answer: Copper (I) Carbide
Explanation:
Copper is a polyatomic ion, meaning it has multiple charges. Carbon has an outer shell consisting of 4 valence electrons so it can either add or lose 4 electrons so it’s charge can be -4 or +4. As said Copper has multiple charges but they are positive, so in this case Cu4 would be 4 +1 charges compared to C which would be -4. Therefore this is a 4:1 ratio, meaning Cu4C is Copper (I) Carbide
hope this helps :)
2 Explain why the reaction between aluminum and iron oxide is useful in the railway industry.
Answer:
Sometimes, it is necessary to produce a small amount of iron more quickly, for example if railway workers need to produce molten metal to fix a broken rail.
Explanation:
The thermite reaction uses aluminium powder and iron (III) oxide. When ignited, the mixture reacts vigorously because of the large difference in reactivity between aluminium and iron.
The aluminum can create more durable bonds with oxygen than it can with hydrogen. Since a lot of heat is produced throughout the entire reaction, molten iron that may be used to link railroad tracks is produced as a result of the reaction.
What is aluminum ?Chemical element aluminum has the atomic number 13 and the symbol Al. Aluminum has a density that is around one third that of steel, which is lower than that of most common metals. It has a strong affinity for oxygen, and when exposed to air, creates a protective oxide coating on the surface.
Aluminum (Al) and iron(III) oxide (Fe2O3) react to generate aluminum oxide (Al2O3) and molten iron (Fe). Aluminum displaces iron in iron(III)oxide to generate aluminum oxide in what is known as a displacement reaction.
Iron oxide and aluminum are used to repair machine parts that have cracks or serve as railing on railroad tracks. Thermite reaction is the name given to this process.
Thus, The aluminum can create more durable bonds with oxygen than it can with hydrogen.
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LAST ATTEMPT PLS HELP!!!
What is the correct skeleton equation for the following reaction?
iron + oxygen --> iron(III) oxide
Fe +O—> FeO
Fe + O2 —> FeO2
Fe+ O2 —> Fe₂O₃
Fe + O —> Fe₂O₃
Fe +O2 =Fe2O3 is correct !
Chloroform (CHCl3), an important solvent, is produced by a reaction between methane and chlorine.
CH4(g) + 3 Cl2(g) CHCl3(g) + 3 HCl(g)
How many grams of CH4 is needed to produce 56.0 g CHCl3?
What is the relationship between absorbance and transmittance of a sample in a spectrophotometer?
- indirect
- Direct
- No relationship
Plz help!!
Molecules at a higher temperature have _______ kinetic energy, speed, and momentum compared to molecules at a lower temperature.
Answer:
Molecules at a higher temperature have higher/more kinetic energy, speed, and momentum compared to molecules at a lower temperature.
Explanation:
True or False: Increasing the amplitude
changes the wavelength.
Answer:
False
Explanation:
Amplitude does not affect wavelength
A small amount of americium-241 is used in smoke detectors. A stream of radiation flows between two electrodes. If smoke interrupts the stream, the alarm goes off. What feature of the radioisotope americium-241 would be most helpful for the smoke detector to work? long half-life short half-life over-sensitive detection less sensitive detection.
The most helpful feature of the radioisotope americium-241 for the smoke detector to work is its Long half-life.
What is Half-Life?
Half-life is the time required for a quantity to reduce by half to its initial value. The half-life of any radioisotope is represented by [tex]t_{1/2}[/tex] .
Americium-241 (²⁴¹Am) is the most common isotope of americium.
Americium-241 has a half-life of 432 years.
Am-241 decays by emitting alpha particles and gamma radiation to become neptunium-237.
Thus, the most helpful feature of the radioisotope americium-241 for the smoke detector to work is its Long half-life.
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Smoke detectors are the safety devices for fire protection that detects smoke and gives alarms as a warning. The long half-life of the radioisotope would be most practical for the detector.
What is a long half-life?Radioisotopes are chemical substances that have unstable neutrons, protons and some amount of excess energy. They have a half-life which is the time by which they get reduced or decay to half quantity.
Americium-241 is the radioactive isotope of americium and have a half-life of 432.2 years. It helps in the alarm as the smoke particle disrupt the electric current produced by the isotope and results in the warning of the device to go on.
Therefore, option A. long half-life is the feature that would be most useful for the smoke sensor.
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temperature is a measure of how much heat you have in, or around you. is it true or false
Your answer is
true
hope it helps you
How to Separate Iodine and sulfur by technique of saparation
A mixture of iodine and sulphur can be separated by adding Carbon disulphide that is (CS₂) then stir the solution and filter it . As sulphur dissolved in CS₂, so it come into filter and got separated from the mixture.
Which statement about Niels Bohr’s atomic model is true?
Answer:
I believe your answer is B. Each orbit has a specific energy level.
Hope this helped!
what effect does dilute ethanoic acid have on red litmus paper
Answer:
As ethanoic acid is basically a acid
it will turn blue litmus red and on a red litmus paper
there will be no effect
Calculate the mass of 3.00 moles of SeBr2
What is the difference between Speed and Velocity?
Power gathered from the sun and wind?
A
is considered a nonrenewable resource.
B
can provide humans with energy forever.
C
can only be used in the daytime.
D
is not a natural resource.
30 points
Your answer is B
Sun and wind are considered renewable energy, meaning that it won't polute the Earth. And as far as I know, the Sun and wind can't really run out. So it can last a very long time!
Hope this helps!
-Daisuke
When solving net force problems, arrows going opposite directions means you subtract the Newtons.
True
or false
It's actually true hope it helps.
It takes 78.2 J of energy to raise the temperature of 45.6g of lead by 13 degrees celsius. What is the specific heat of lead?
Pls Help!!!!
Answer:
Q = mcΔt but this time rearrange to find for c
Explanation:
Q or energy = 78.2J
mass of lead = 45.6g
Specific heat capacity of lead = ????
Δt = 13°C
Q = mcΔt
Rearrange the equation to find for c
c = Q / m x Δt
c = (78.2) / (45.6) x (13)
c ≈ 0.132 J °C
Is melting an ice cube a physical or chemical change.
Why are crystal clues used to identify metamorphic and igneous rocks, but not sedimentary rocks?
Answer:
because there is not enough pressure to form a crystal in sedimentary rocks. This is my understanding
Explanation:
Please correct me if wrong.
what is the symbol of the periodic table for aluminum
Answer:
Al
Explanation:
Al = Aluminum
What is the difference between heavy cream and heavy whipping cream?.
Answer: The main difference between the two is their fat content. Heavy cream has slightly more fat than whipping cream. Otherwise, they are nutritionally very similar. You can use them interchangeably in recipes without affecting the taste, although they may lead to different consistencies.
Explanation: