Which two statements describe force?
D A. Force is the ability to change an object's motion.
DB. A force can have mass or weight.
C. A force can be a push or a pull.
D. Force causes an object's motion to remain constant.
Answers
Answer:
A. force is the ability to change an objects motion
Explanation:
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Related Questions
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). *
Answers
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.
is it possible for a molecule to have polar bonds and not have a net dipole?
Answers
Please use the image to answer the question thanks : >
Bye, Have a good day.
Answers
what image? you didn't attach one.
How are valence electrons and ionization energy related?
Answers
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
Answers
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
(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?
Answers
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.
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A chemist who frequently carries out a complex experiment is
likely to have high:
a. Precision, but low accuracy
b. Precision
c.Accuracy, but low precision
d.Accuracy
Answers
Answer:
c.
Explanation:
This is because the chemist will get the average of the experiment from multiple attempts but not precision because the experiment is complex rather than simple.
The chemist will most likely have high accuracy, but low precision. A
chemist who has been performing experiments frequently will be accurate
when taking the required measurements for the experiment due to the
frequency.
Precision however won't be affected because precision deals with how
close his results from the experiment are. The complexity of the
experiment and the different variables used makes him likely to have low
precision.
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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?
Answers
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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i2 is an example of which covalent molecule
Answers
1.Iodine
I hope it help you
Answer:
Yes, it has only a single covalent bond.
Explanation:
It has only a pair of electrons between the iodine atoms in order to gain a stable arrangement of 8 electrons in its outer shell. It is sharing them, so it's a covalent bond as a single iodine atom cannot be stable on its own. It's a halogen and is a single covalently-bonded diatomic molecule.
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?
Answers
So no new mass is created or destroyed it’s simply added to the nail from the airs oxygen.
Determine the enthalpy for this reaction: Ca(OH)2(s) CO2(g)→CaCO3(s) H2O(l).
Answers
Answer: This is an acid-base reaction (neutralization): Ca(OH) 2 is a base, CO 2 is an acid. ; White, odorless powder. [Note: Readily absorbs CO2 from the air to form calcium carbonate.]
Explanation:
Answer:
-113.2 kJ/mol
Explanation:
(-1207-285.8)-(-981.1-393.5)= -133.2
(Products)-(Reactants)= Answer
THIS IS DUE LIKE REALLY SOON I RLLY NEED HELP :,)
Answers
Based on their definitions, electron affinity could be considered the opposite of
Answers
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
study the mixture below and classify whether it is a solution, suspension or colloid.
Answers
Answer:
Mayonnaise - Colloid
Oil and Water - Suspension
salt and water - Solution (saline)
Need Explanation?
How is fission different from a simple chemical reaction? (1 point)
Protons cause fission reactions, while chemical reactions involve electrons.
Fission can happen with radioactive forms of atoms.
Fission reactions run out of control, while chemical reactions are controlled.
Atoms are split into smaller pieces during fission.
Answers
Answer:
C
Explanation:
Fission reactions run out of control, while chemical reactions are controlled. :)
"Chemical reactions are depends on electrons while fission depends on protons. In fission , there is no any effect of temperature while in case of chemical reaction rate of reaction will be affected."
What is chemical reaction?
The type of reaction in which more than one molecule get combined and form a different kind of product then such type of reaction can be considered as chemical reaction.
What is Fission reaction?
Fission is the breaking of a heavy nucleus into lighter nuclei, while fusion is the joining of nuclei to create a larger and heavier nucleus.
To know more about chemical reaction
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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
Answers
Answer:
A. covalent bond
Explanation:
Hope this helps out!
Which two options are examples of chemical changes?
Answers
Answer:
gas and liquid ;-;
Explanation:
correct me if im wrong
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
Answers
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.
I need help with this
Answers
2. 115
THIS IS TO REACH 20 CHARACTERS
2. 115
I hope this helps:)
When do forces occur?
Answers
Answer:
When there is an interaction between two objects.
Explanation:
The primary way in which the amount of carbon dioxide in the atmosphere can be increased is by ____.
Answers
the burning of fossil fuels
The boiling point of ethanol is 78c, State what this means
Answers
It mean , ethanol, with a molecular weight (MW) of 46, has a boiling point of 78 °C (173 °F), whereas propane (MW 44) has a boiling point of −42 °C (−44 °F).
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?
Answers
Answer:
City Hall - directs necessary activities throughout the city
Explanation:
Answer:
Town Hall,
Explanation:
NaF NF3 SiF4 CaF2 NH4F
Identify and explain which of the listed compounds from the list are ionic and which are covalent.
no outside links please
Answers
-NaF = ionic (Na is a metal, F is a non-metal)
-NF3 = Covalent (N is a non-metal, F is a non-metal)
-SiF4 = Ionic (Si is a metalloid, F is non-metal)
-CaF2 = ionic (Ca is a metal, F is a non-metal)
-NH4F = covalent (N is a non-metal, H is a non-metal, F is a non-metal)
Hope this helps
Which is a common unbalanced force acting on objects in motion?
a. friction
b. speed
c. inertia
d. acceleration
Answers
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.
How many metals, nonmetals and metalloids are there in the periodic table?
Answers
Answer:
There are 118 elements in the nature.
Metals s = 92
Non metals = 20
Metalloids Ms = 6
Explanation:
I can’t find the answer, can you help me please?
Answers
Answer: Warm ocean air then rises into the storm, then forming an area of low pressure underneath. :)
Explanation:
How many electrons does an alpha particle contain
Answers
What compound is this?
Answers
Answer:
Carbon Tetrachloride
Explanation:
1 Carbon atom, 4 chlorine atoms (hence "tetra" prefix)
Which of the tests would involve a chemical change in the mineral?
Answers
hmmm water
Explanation:
Water can change if you put food coloring
in it
