Which is not a critical part of collision theory?
orientation
energy
amplification
collisions
Answer:
Amplification
Explanation:
Which of the following diatomic gases has the shortest bond between its two atoms?
A. HI
B. O2
C. CI2
D. N2
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what is a Hydrogel?
Answer:
Hydrogels can be defined as systems comprising of three-dimensional, physically or chemically bonded polymer networks entrapping water in intermolecular space.
Explanation:
Hydrogen and nitrogen react to produce ammonia gas as shown in the following chemical
equation.
N2 + 3H2 - 2NH:
How many grams of hydrogen must react to produce 31.5 grams of ammonia?
Explanation:
[tex]31.5 \: g \: aommnia \: \times \: \frac{1 \: mol \: ammonia}{8 \: g \: ammonia \: } \: \times \frac{3 \: mol \: hydrogen}{2 \: mol \: ammonia} \: \times \frac{1 \: g \: hydrogen}{1 \: mol \: hydrogen} = \: 5.90625 \: g \: hydrogen \: must \: react \: [/tex]
How many grams is 2.393 x 10^24 atoms of CI
70.45 g CI
140.9 ga
140.9 mole CI
70.45 mole CI
Answer:
There are 140.9 grams in 2.393*10²⁴ aotms of Cl.
Explanation:
Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if 6.023*10²³ atoms are contained in 1 mole of the compound, 2.393*10²⁴ atoms are contained in how many moles?
[tex]amount of moles=\frac{2.393*10^{24} *1 mole}{6.023*10^{23} }[/tex]
amount of moles= 3.973
If the molar mass of Cl is 35.453 [tex]\frac{g}{mole}[/tex], then the amount of mass that contains 3.973 moles can be calculated as:
3.973 moles*35.453 [tex]\frac{g}{mole}[/tex]= 140.85 grams ≅ 140.9 grams
There are 140.9 grams in 2.393*10²⁴ aotms of Cl.
what do you get if oceanic plates are moving away from one another
Answer:
Explanation:
When two plates are moving away from each other, they are called a divergent plate boundary.Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere.
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and a 40N Torce in a southeriy direction?
4. A car works harder to accelerate from 0 to 10km/hr than it does to maintain a 10km/hr speed. Why is this? A. b/c
static friction is harder to overcome than kinetic or rolling friction. B. b/c static friction is easier to overcome than
kinetic or rolling friction. C. b/c static friction is harder to overcome than potential energy. D. b/c static friction is
easier to overcome than gravity.
Answer:
I Don't Know.
Explanation: I'm Sorry, But I'm Not Good At This Subject. Atleast I'm Being Honest.
0.75 moles of an unknown acid are dissolved in water. If 0.42 moles of H3O+ form, what was the percent dissociation of the unknown acid?
Answer:
56 %
Explanation:
The percent dissociation of a weak acid can be defined as:
Moles of weak acid that produced H₃O⁺ species / Total number of weak acid moles * 100%
We are given all the required data to calculate the percent dissociation:
0.42 mol / 0.75 mol * 100 % = 56 %
The percent dissociation is 56%.
How does catalysts make its way to common usage?
Which of the isotopes are radioactive? Check all that apply.
hydrogen-1
hydrogen-3
helium-4
carbon-14
uranium-235
copernicium-277
fermium-252
carbon-12
Answer:
here you go
Explanation:
hydrogen-3
carbon-14
uranium-235
copernicium-277
fermium-252
Answer:
hydrogen-3
carbon-14
uranium-235
copernicium-277
fermium-252
:)
Explanation:
What mass of methane gas (CH4) is required in order to follow the Law of
Conservation of Mass?
Answer:
2.3g
Explanation: my mom is a teacher
CH₄ + 2O₂ → CO₂ + 2H₂O For this reaction the mass of methane gas (CH4) is required in order to follow the Law of Conservation of Mass is 2.3 gram. Therefore, option D is correct.
What is the Law of Conservation of Mass ?The Law of Conservation of Mass states that the total mass of the reactant is exactly equal to the total mass of the product.
It is also state that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal gets carbon dioxide when it is burned.
This law is important in understanding and production of various chemical reactions. If researchers experience the identities alongside the quantities of the reactants for any particular reaction.
According to the Law of Conservation of Mass, In given combustion reaction to obey this law the mass of reactant is 2.3 grams.
Thus, option D is correct.
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Which of the following preparation of salt is incorrect? *
Acid + alkali
Acid + hydrogen
Acid + carbonate
Acid + metal oxide
Answer:
acid + hydrogen
Explanation:
gives a good combination
Workers who build railway tracks often use a process called thermite welding to connect pieces of track. Thermite is a mixture of aluminum metal (Al) and ferric oxide (Fe2O3). A worker places thermite between two pieces of track and then burns it to form aluminum oxide (Al2O3) and iron (Fe). As the reaction happens, the air around the mixture becomes so hot that the two pieces of track fuse together.
Is this chemical exothermic or endothermic?
Explanation:
guess
exothermic because of the heat
Place the characteristics for each phase of matter into the table where it belongs
Answer:
Solid- Definite shape
Solid and Liquid- Definite volume, Not easy to compress, if at all
Gas- No Definite Volume
Liquid and Gas- No Definite shape
The characteristics for each phase of matter in the table where it belongs are as follows:
Solids: Definite shape, very little particle motion. Liquids: Fluid motion. Gases: No Definite Volume, easily compressed. Solids and liquids: Definite volume, Not easy to compress, if at all. Liquids and Gases: No Definite shape, constant, fast particle motion. What are the different States of matter?The states of matter may be defined as the three distinct physical forms which matter can take in most environments. They are as follows:
Solid.Liquid.Gas.Each of the states of matter significantly possesses specific chemical and physical properties. For example, solids generally have a definite volume, are relatively rigid, and atoms or molecules are attached to each other very compactly.
Liquids possess a definite volume and have the ability to alter their shape through flowing. The atoms are loosely bonded to one another.
Gas has no definite volume or shape. This state of matter is easily compressed as well.
Therefore, the characteristics for each phase of matter in the table where it belongs are well described.
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Count the total atoms
Answer:
10
Explanation:
1 Fe atom+ 3 nitrogen atoms+ 6 oxygen atoms= 10 atoms
Please help me on this!!
Answer:
OK
Explanation:
OK
What would happen to an impulse if a neuron cannot produce chemicals at a synapse?
Answer:
Explanation: he axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. ... The binding allows the nerve impulse to travel through the receiving neuron
Predict the nature of the indicated covalent
bond.
polar or non-polar
The nature of the indicated covalent bond in water molecule is polar.
What is a covalent bond?A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.
Examples of compounds that exhibit covalent bondOxygenChlorine gasWater (H₂O), etcPolarity of waterThe atoms that make up the molecule of water causes the water molecule to be polar because of its shape.
Thus, the nature of the indicated covalent bond in water molecule is polar.
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What are the protons neutrons and electrons of Vanadium-52 +3 charge
HELP
Answer:
Protons: 23
Neutrons: 28
Electrons: 23
I THINK
Explanation:
Bases and acids are _
A. Mixtures
B. Gases
C. opposites
D. The same
Answer:
opposite
Explanation:
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In order to solve Ideal Gas Law calculations, what unit must temperature be in? *
Fahrenheit (°F)
Celcius (°C)
Kelvin (K)
Atmospheres (atm)
Answer: Atm
I took a test and got it right.
Which of the following actions decreases the entropy of a system?
A-mixing baking soda and salt
b- freezing water
c- dissolving salt in water
d-boiling water
Answer:
b- freezing water
Explanation:
Solid<liquid<gas is the general rule for entropy increase
Freezing water would change the phase from liquid to solid which would lead to less entropy
What type of ions are commonly formed from halogens
Answer:
they all form diatomic molecules.
for example: H2, F2, Cl2, Br2, I2, and At2) and they all form negatively charged ions H-, F-, Cl-, Br-, I-, and At- .
If the hydroxide concentration of a solution is
[OH-] = 4.67 X 10-8
what would the pH of that solution be?
Answer:
ty
Explanation:
ytReally need help with the rest of them, please it's due in 20 minutes
Answer:
chlorine is for pool
Explanation:
hope is help
Matches=from Chemical energy to light energy+heat energy
Explanation:
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
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The theory of plate tectonics describes the movement of continental plates across the Earth's surface as if they were riding on a
conveyer belt of convection. Although the plate tectonic movement is extremely slow, there is evidence of this theory. Which
statements below support the theory of plate tectonics? Select ALL that apply.
A)Species became extinct more quickly at the end of the Cretaceous period.
B)99
Fossils of nearly identical species are found on both South America and
African continents.
C)Areas of subduction often have high seismic activity as one plate moves
under another plate.
D)Species become adapted to particular environments as random mutations
generate new phenotypes.
E)Marsupials existed on both North American and Australian continents
when these land masses were connected.
Answer:
The Answers are B, C, and E.
Explanation:
Fossils of nearly identical species are found on both South America and African continents. Marsupials existed on both North American and Australian continents when these land masses were connected. Areas of subduction often have high seismic activity as one plate moves under another plate. Since the continents were once joined, there is the likelihood that species originated in one location and then spread to other areas as the continents moved is likely. This explains the similarity of fossils or species in very geographically remote areas. The high activity of seismic movement also is best explained by plate movement.
The statements that supports the theory of plate tectonics are:
B) Fossils of nearly identical species are found on both South America and African continents. C) Areas of subduction often have high seismic activity as one plate moves under another plate.E) Marsupials existed on both North American and Australian continents when these land masses were connected.According to the question, we are asked to prove the evidence of the plate tectonic theory based on the movement of continental plates across the Earth's surface.
Plate tectonic theory states that there is a detachment of the outer crust of the Earth and they join when the upper part meets the continental plates and diverges across the planet.
Therefore, the statements that support this theory are the facts that:
Fossils of similar species are found in different continentsThere are different areas of seismic activity as a result of plate movementMarsupiais both existed on different continents even as their land masses are connected.Therefore, the correct answers are options B, C and E
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How many atoms are present in 2.79 mol of NH3?
Answer:
2.79 mol NH3 have 2.79 mol of N atoms. Answer is 1.68*10²⁴ N-atoms
(1.7m - 2) + (2m – 4)
Answer: 3.7 m − 6
Explanation: Simplify the expression.
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what are 5 reason masks are important for the virus
Answer:
they reduce viral transmission
They prevent asymptomatic spread
You're protecting others from illness.
They're mandated by law in some states
They're good hygiene in general