Answer:
Five Postulates of KMT.
Gas particles travel in straight lines unless they collide with other particles or the walls of the container.
Gas particles have negligible volume compared to the free space between them..
Molecular collisions are perfectly elastic and kinetic energy is conserved.
Gas particles experience negligible intermolecular forces, there are no attractive or repulsive forces between particles.
The average kinetic energy of the particles in a sample of gas is proportional to the absolute temperature.
The fifth postulate is very important to note as it relates kinetic energy to temperature.
For a gaseous particle most of the kinetic energy is in translation.
When do forces occur?
Answer:
When there is an interaction between two objects.
Explanation:
How are valence electrons and ionization energy related?
How many electrons does an alpha particle contain
How many metals, nonmetals and metalloids are there in the periodic table?
Answer:
There are 118 elements in the nature.
Metals s = 92
Non metals = 20
Metalloids Ms = 6
Explanation:
Which of the following is equal to avogadros number?
A. The number of atoms of bromine in 1 mol Br2
B. The number of molecules of chlorine in 0.50 mol Cl2
C. The number of molecules of nitrogen in 1 mol N2
D. The number of atoms in 1 mol CO
Answer:
A. The number of atoms of bromine in 1 mol Br2
Explanation:
Hello?
In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules.
In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules. The solution will have also been C. But it is talking about molecules. Please bear in mind that molecules is based on grams that it an element contains overall.
I hope this helps. Have a nice studies.
Which is a common unbalanced force acting on objects in motion?
a. friction
b. speed
c. inertia
d. acceleration
Answer:
a. friction
Explanation:
What is a common unbalanced force acting in motion? Common forces that are often unbalanced include the force of gravity and applied forces. When these forces are unbalanced, objects accelerate, change their position and find new configurations for which all forces are again balanced.
Friction is a kind of force.
Plants combine water (liquid) and carbon dioxide (gas) to make sugar (solid) during photosynthesis. This is an example of__.
Answer:
Explanation:
It' an example of photosynthesis and plants make oxygen and suger (glucose). Hope this helped
A 12.0 L helium balloon is inflated in an air-conditioned store at 21.0C. Assuming that the pressure remains constant, how large is the balloon when it is taken outside on a hot day at 40.0C?
The ballon will be 22.86L large when it is taken outside on a hot day at 40⁰C
According to pressure law, the volume of a given mass of gas is directly proportional to the temperature. This is expressed as:
V = kT
k = V1/T1 = V2/T2
Given the following parameters
V1 = 12.0L
T1 = 21⁰C
T2 = 40.0⁰C
Required
Final volume
Substitute the given parameters into the formula
12/21 = V₂/40
21V₂ = 12 * 40
21V₂ = 480
V₂ = 480/21
V₂ = 22.86L
Hence the ballon will be 22.86L large when it is taken outside on a hot day at 40⁰C.
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I need help with this
The density of butter is 0.86 g/cm3. what is the mass of 240 cm3 of butter?
Answer:
mass= 206.4 g
Explanation:
Density= mass/volume
0.86=x/240
x=240×0.86
=206.4g
The density of butter is 0.86 g/cm³. 206.4g is the mass of 240 cm³ of butter. The phrase "specific volume" is occasionally used in thermodynamics to refer to a substance's reciprocal of its density.
Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in metre-kilogram-second or SI units). For example, the density of air is 1.2 kilograms per cubic metre.
Density= mass/volume
0.86=x/240
x=240×0.86
=206.4g
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Which of the following actions will not increase the rate at which a solid dissolves in
a liquid?
using smaller particles of the solid
O lowering the temperature of the system
O increasing the surface area of the solid
stirring the solid and the liquid
Answer:
O lowering the temperature of the system
What is the pH of a solution if [H+] = 1.0 x 10-5M? *
1 point
5.00
7.00
11.00
50.0
Answer:
5.00
Explanation:
because ignoring the pH solution part and doing the math it comes around to 1.0x5.0 which 1 times anything is itself so its 5
Based on their definitions, electron affinity could be considered the opposite of
Based on their definitions, electron affinity could be considered the opposite of electron affinity. This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons.
What is meant by electron?The electron is a subatomic particle with a negative one elementary charge electric charge. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles.
An electron is a negatively charged subatomic particle that can exist either free or bound to an atom (not bound). Along with protons and neutrons, electrons are one of the three primary types of particles that make up an atom. Together, protons, neutrons, and electrons make up the atom's nucleus.
This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons. Conceptually, this is the polar opposite of electron affinity.
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The answer would be ionization energy
I need helppppppppppp
A B C
a. Mg(12) 2.8.2 -2e- = Mg2+
b. S(16) 2.8.6 +2e- = S2-
c. MgS
d. No, because it is neutral
Which of the tests would involve a chemical change in the mineral?
hmmm water
Explanation:
Water can change if you put food coloring
in it
Explain how living
on the moon would be similar
to going camping.
Answer:
you will die because no air
Which two options are examples of chemical changes?
Answer:
gas and liquid ;-;
Explanation:
correct me if im wrong
i need help TnT
do you think someday human beings will become extinct also because of diseases and pandemics?
What program or projects you would like to propose to avoid the extinction of human beings to happen?
Write your advocacy program or projects on the space provided below. (You may state your answers with a minimum of 5 sentences in a paragraph or bulleted paragraph form). *
Explanation:
I don't think human beings will ever extinct
cause they are smart and adaptive
Q1. I don't know the future but I would say that Humans will not become extinct because of diseases and pandemics.
Match the correct function to the correct organelle.
Functions
Organelle
Allow substances to enter and leave the cell ___________
Vacuole
Store water or fluids __________
Ribosome
Powerhouse of the cell _________
Golgi Bodies
Produce protein _________
Nucleus
The cell ‘post office’ modify, sort and package protein __________
Cell Membrane
Control the life process of the cell __________
Mitochondria
Answer:
Allow substances to enter and leave the cell=Cell Membrane
Store water or fluids=Vacuole (vacuoles are much bigger in plant cells)
Powerhouse of the cell=Mitochondria
Produce protein=Ribosome
The cell ‘post office’ modify, sort and package protein=Golgi Bodies
Control the life process of the cell=Nucleus
students are comparing the parts of a cell to the parts of a city. Which of the following would provide the best comparison to the nucleus of a cell?
Answer:
City Hall - directs necessary activities throughout the city
Explanation:
Answer:
Town Hall,
Explanation:
I can’t find the answer, can you help me please?
Answer: Warm ocean air then rises into the storm, then forming an area of low pressure underneath. :)
Explanation:
A Rectangular Prism has a height of 4cm, a width of 5cm, a length of 1.2 cm, and a mass of 85,000 g. What is it's density?
A. .00000035416 g/cm3
B. 00035416 g/cm^3
C. 354.16 g/cm^3
D. 3541.6 g/cm
Answer:
The answer is D.
Explanation:
Volume (V) = l x w x h
V = 4 x 5 x 1.2
V = 20 x 1.2
V = 24
Density = Mass/Volume or D = M/V
D = 85,000/24
D = 3541.66666666
is it possible for a molecule to have polar bonds and not have a net dipole?
please help!!!
Select the correct answer.
According to the valence bond theory, what kind of bond forms when valence atomic orbitals overlap with an unpaired electron?
A. covalent bond
B. sigma bond
C. pl bond
D. no bond
Answer:
A. covalent bond
Explanation:
Hope this helps out!
A person has a mass of 80.0 kg on
Earth, what would their mass be on
Mercury, which has 1/3 the gravity of
Earth?
A. more than on the Earth
B. less than on the Earth
C. the same as on earth
Answer:
The same as on earth
Explanation:
mass is the amount of matter in an object and the mass of an object is always the same at any point in time
gravity will only have effect on the weight and not the mass.
so assuming the question was talking about the weight, then we can say the weight will be lesser on Mercury
3. Which part of a cell is not found in the cytoplasm?
a. chromosomes
b. Golgi body
c. ribosome
d. vacuole
Answer:
vacuole
Explanation:
Brainliest please
(Boost your knowledge questions)
1. Can you light Diamond on fire?
2. What is the difference between a Chemical Process and a Physical Process?
3. How many electrons fit in each shell around an atom?
Answer:
a) Diamond can indeed be set on fire since it is made of carbon. ... Although diamond requires a higher temperature to burn, it does indeed burn via normal carbon combustion. You can even burn diamond in a regular flame if you are patient and conditions are right.
b) In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.
c) Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
MARK ME AS A BRAINLIST PLZ
The primary way in which the amount of carbon dioxide in the atmosphere can be increased is by ____.
the burning of fossil fuels
rust results from iron’s reaction to oxygen. an iron nail gains mass when it rusts. how does this reaction support the law of conservation of mass?
THIS IS DUE LIKE REALLY SOON I RLLY NEED HELP :,)
