Answers
Answer:
99°C
Explanation:
asking questions is Best in life of education
The kinetic theory of matter states the movement of the particles in matter. The water sample at 99°C will vibrate at the fastest speed. Thus, option B is correct.
What is the kinetic theory of matter?The kinetic theory of matter states the properties of the particles including the effect of factors like temperature, volume, and pressure on the various phases of matter.
The temperature of the water sample at 99°C is the highest and hottest that increasing the kinetic energy exhibited by the particles. This event in turn increases the collision and the speed of the particles and molecules.
The temperature has a direct relation to kinetic energy, collision, and speed. As the temperature increases, the random movement causes an increase in the kinetics.
Therefore, option B. water sample at 99°C has the molecules with the fastest speed.
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Related Questions
A physical change produces a new element, a chemical change results from breaking bonds between atoms. A physical change results in a new compound being formed; a chemical change results in the formation of a new element. A physical change results in a new compound being formed; a chemical change results in the formation of a new element. A physical change results in a new substance being formed, which is different than what results from a chemical change. A physical change results in a new substance being formed, which is different than what results from a chemical change. A physical change is a change from one state of matter to another; a chemical change results in the formation of a new substance.
Answers
A physical change is a change from one state of matter to another; a chemical change results in the formation of a new substance.
What is Physical and Chemical change ?Examples of physical changes include changes in the composition or size of materials. Physical changes include changes from one state to another, for as going from a solid to a liquid or a liquid to a gas. Some of the processes that result in physical changes are cutting, bending, dissolving, freezing, boiling, and melting.
Chemical changes are those in which one or more new compounds are created. A chemical reaction is another name for a chemical change. Examples include the burning of any substance and the corrosion of iron.Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they are typically irreversible barring additional chemical reactions.Learn more about Physical and Chemical change here:
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a weather balloon is inflated to a volume 2.2 10square3 L with 374g of helium. what is the density of helium in grams per liter
Answers
Answer:
Density = 0.17 g/L
Explanation:
It is given that,
Volume of the inflated balloon filled with Helium, \(V=2.2\times 10^3\ L\)
Mass, m = 374 g
We need to find the density of helium. It is equal to its mass per unit volume. It can be given by :
d =m/V
\(d=\dfrac{374\ g}{2.2\times 10^3\ L}\\\\=0.17\ g/L\)
So, the density of helium in the balloon is 0.17 g/L.
Which statement BEST describes how a golf club does "work" on a golf ball?
(A) When the club hits the ball the club transfers all of its kinetic energy to the ball.
(B) All of the kinetic energy from the club is transferred to the ball as they both move through the air.
(C)
Some of the kinetic energy from the golf club is transferred to the ball and some transforms into sound
and heat, but the total energy remains the same.
(D) The golf club loses kinetic energy when it hits the ball and the ball gains kinetic energy from the air as it
travels
Answers
Answer:
C
Explanation:
It looks pretty reasonable to me
Pls help I’ll give brainly
Answers
Calculate the molecular mass of trichlorofluoromethane, also known as Freon-11
Answers
Answer: Trichlorofluoromethane, also known as CFC-11 and Freon 11, is a refrigerant, aerosol propellant, and foam-blowing agent.
Which profile best shows the topography alone line AD
Answers
Formula unit meaning?
Answers
Formula unit is defined as the empirical formula of any covalent or ionic network solid compound which is used as an independent entity for the stoichiometric calculations.
Formula unit is the lowest whole number ratio of ions which represented in an ionic compound.
A molecule consist of two or more elements which are covalently bonded and a formula unit represents the lowest whole number ratio of ions in an ionic compound.
Molecular mass is also termed as molecular weight and it actually indicates the mass of a molecule relative to the carbon-12 atom which has a mass of twelve units. Formula mass of any substance is defined as the sum of atomic masses of constituents atoms in an ionic compound.
Formula mass and molecular mass are basically the same terms but they are uses differently because an ionic compound cannot be a molecule whereas molecules are actually covalent compounds means they have only nonmetals and therefore we can say formula mass when we are taking ionic compounds.
The molecule is made up of two or more elements which are covalently bonded. It is defined as the smallest particle of a covalent substance that has the properties of that particular substance, the smallest particle of that substance which can take participate in a chemical reaction.
Thus, we concluded that formula unit represents the lowest whole number ratio of the ions in an ionic compound.
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According to Coulomb's law, what will happen to the electric force between two identical negative charges as they move closer together?
Answers
Answer:
According to Coulomb’s law, the electric force between two identical negative charges is inversely proportional to the square of the distance between them. This means that as the distance between the two charges decreases, the electric force between them will increase. Since the charges are both negative, they will repel each other, so as they move closer together, the repulsive force between them will become stronger.
Explanation:
write the structural formula for 2-bromo-3-chloro-4,4-dimethylpentanal
Answers
Answer:
Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO
Explanation:
The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.
The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.
The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.
The methyl groups are non-polar and do not have any significant reactivity.
The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.
The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.
Draw a plausible transition state for the bimolecular reaction of nitric oxide with ozone. Use dashed lines to indicate the atoms that are weakly linked together in the transition state.No(g) + o3(g) --> NO2(8) + O2(g)
Answers
One weakly bound intermediate is formed between the oxygen atom of O3 and one of the nitrogen atoms of NO, and another weakly bonded is formed between the oxygen atom of O3 and the nitrogen atom of NO.
Draw a plausible transition state for the bimolecular reaction of nitric oxide with ozone.The bond between nitrogen and oxygen in NO is partially broken, while the bond between the two oxygen atoms in O3 is also partially broken. The bonds between nitrogen and oxygen in NO2 and between the two oxygen atoms in O2 are partially formed.
How do ozone and nitric oxide interact?Nitric oxide and ozone then easily combine to form nitrogen dioxide and oxygen. No net ozone gain occurs as a result of the technique mentioned above. Concentrations are higher in the troposphere than can be explained by these processes alone.
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In any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called ________, while organisms
that recycle the nutrients trapped in dead organisms are collectively called ________.
A) producers; consumers.
B) producers; decomposers.
C) heterotrophs; consumers.
D) heterotrophs; autotrophs.
Answers
Answer:
B. Producers and decomposers
Explanation:
Producers aka plants convert raw energy into chemical energy.
Decomposers are responsible for decomposing dead organisms.
Answer:
the answer is b
Explanation:
Because it provides for the restoration of the life cycle
Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Determine ΔHrxn for
C(diamond) → C(graphite)
with equations from the following list:
(1) C(diamond) + O2(g) → CO2(g) ΔH = −395.4 kJ
(2) 2 CO2(g) → 2 CO(g) + O2(g) ΔH = 566.0 kJ
(3) C(graphite) + O2(g) → CO2(g) ΔH = −393.5 kJ
(4) 2 CO(g) → C(graphite) + CO2(g) ΔH = −172.5 kJ
Answers
The enthalpy change of the reaction C(diamond) → C(graphite) is -2.9 kJ.
The given information is ΔHrxn for the reaction C(diamond) → C(graphite) can be calculated with the given equations:Equations: C(diamond) + O2(g) → CO2(g) ΔH = −395.4 kJ 2 CO2(g) → 2 CO(g) + O2(g) ΔH = 566.0 kJ C(graphite) + O2(g) → CO2(g) ΔH = −393.5 kJ 2 CO(g) → C(graphite) + CO2(g) ΔH = −172.5 kJThe required reaction can be obtained by adding the equations (1) and (4), as follows:C(diamond) + O2(g) + 2CO(g) → C(graphite) + 3CO2(g)Addition of the two equations (1) and (4) results in a reaction whose products are C(graphite) and CO2.
To get the final equation that involves only the required reactants and products, the equation (2) should be added, which consumes CO2 and produces O2, as shown below:C(diamond) + O2(g) → CO2(g) ΔH = −395.4 kJ [eq. (1)] 2 CO(g) → C(graphite) + CO2(g) ΔH = −172.5 kJ [eq. (4)] 2 CO2(g) → 2 CO(g) + O2(g) ΔH = 566.0 kJ [eq. (2)] C(diamond) + O2(g) + 2CO(g) → C(graphite) + 3CO2(g) ΔHrxn=ΣΔHf(products)−ΣΔHf(reactants) ΔHrxn=[(3 mol CO2)(-393.5 kJ/mol) + (1 mol C(graphite))(0 kJ/mol)] − [(1 mol C(diamond))(0 kJ/mol) + (1 mol O2)(0 kJ/mol) + (2 mol CO(g))(−172.5 kJ/mol)] − [(2 mol CO2)(566.0 kJ/mol)] ΔHrxn=−2.9 kJ.
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Which organelle in the table is correctly matched with its function?
which one is it??
Answers
Answer:
\(\huge\boxed{\sf Ribosomes}\)
Explanation:
Organelles and their function:Lysosomes:Lysosomes functions in the digestion of food of the cell.It contains hydrolytic enzymes.Vacuole:Vacuole mostly functions in storage.Mitochondrion:Mitochondrion is the power house of the cell.Ribosome:Ribosome functions in protein synthesis.\(\rule[225]{225}{2}\)
Baseballs pitched by a machine have a horizontal velocity of 30 meters/second. The machine accelerates the baseball from 0 meters/second to 30 meters/second in 0.5 seconds. If a baseball has a mass of 0.15 kilograms, the force the machine exerts is newtons. Use F = ma, where a = v − u t .
Answers
The machine exerts a force of 9 newtons on the baseball to accelerate it from 0 m/s to 30 m/s in 0.5 seconds.
To calculate the force exerted by the machine on the baseball, we can use Newton's second law of motion, which states that force (F) is equal to the product of mass (m) and acceleration (a).
In this case, the acceleration can be determined using the formula a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time taken for the acceleration.
Given:
Mass of the baseball (m) = 0.15 kg
Initial velocity (u) = 0 m/s (as the baseball starts from rest)
Final velocity (v) = 30 m/s
Time (t) = 0.5 s
First, let's calculate the acceleration:
a = (v - u) / t
a = (30 m/s - 0 m/s) / 0.5 s
a = 60 m/s^2
Now, we can use the calculated acceleration and the given mass to determine the force:
F = m * a
F = 0.15 kg * 60 m/s^2
F = 9 N
The machine exerts a force of 9 newtons on the baseball. This force is calculated using Newton's second law of motion, which states that force is equal to mass multiplied by acceleration.
By determining the acceleration of the baseball using the formula a = (v - u) / t and substituting the given values, we find that the acceleration is 60 m/s^2. Multiplying the mass of the baseball (0.15 kg) by the acceleration gives the force exerted by the machine as 9 newtons.
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Modeling Nuclear Processes Quick Check
1 of 51 of 5 Items
Question
Which phrase best describes nuclear fusion?(1 point)
the process by which small nuclei combine into a larger nucleus
the process by which small nuclei combine into a larger nucleus
the process by which a large nucleus is divided into smaller nuclei
the process by which a large nucleus is divided into smaller nuclei
the spontaneous emission of radiation from an unstable nucleus
the spontaneous emission of radiation from an unstable nucleus
a series of reactions in which particles from one reaction trigger the next reaction
Answers
The phrase which best describes nuclear fusion is: A. the process by which small nuclei combine into a larger nucleus.
A nuclear reaction can be defined as a type of chemical reaction in which the nucleus of an atom of a radioactive chemical element is transformed by either being joined (fusion) or split (fission) with the nucleus of another atom of a radioactive chemical element and accompanied by a release of energy.
Generally, there are two (2) main types of nuclear reaction and these include:
Nuclear fission: it involves the collision of a heavy atomic nucleus with a neutron, thereby causing a split and release of energy.Nuclear fusion: it involves the joining of two smaller nuclei of atoms to form a single massive or heavier (larger) nucleus with the release of energy.In conclusion, nuclear fusion is best described as the process by which small nuclei combine into a larger nucleus, accompanied by a release of energy.
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how many moles of atoms of each element in one mole (NH4)2CO3
Answers
Answer:
Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).\
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Explanation:
1 mole of (NH₄)₂CO₃ has:
2 moles of N atoms.8 moles of H atoms1 mole of C atoms.3 moles of O atoms.Let's consider the chemical formula of ammonium carbonate: (NH₄)₂CO₃.
The subscripts inform us of the number of moles of atoms in 1 mole of molecules.
Nitrogen has 2 subscripts: "1" (which is not written) and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.
\(N: 1 \times 2 = 2\)
Hydrogen has 2 subscripts: "4" and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.
\(H: 4 \times 2 = 8\)
The subscript for carbon is "1".
The subscript for oxygen is "3".
1 mole of (NH₄)₂CO₃ has:
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Balance the chemical equation
C2H6+O2 = CO2 +H2O
Answers
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When a chemical reaction occurs blank happens
Answers
Answer:
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
Finding dead insects or mouse droppings in the kitchen indicates which of the following: Pest infestation Chemical contamination Food spoilage Cross contamination
Answers
Finding dead insects or mouse droppings in the kitchen is an indication of pest infestation.
Pests are living organisms that are capable of spreading diseases, causing economic damages, or generally constituting nuisance to the environment.
Pest infestation occurs when there is a high number of pests in the environment. When this occurs, their activities are felt in the environment in terms of causing a nuisance, and damaging properties or contaminating foods.
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What type of compound is represented by the graph at right? A. strong base B. strong acid C. weak base D. weak acid
Answers
The type of compound represented by the graph at right is a strong acid (option B).
What is a strong acid?An acid is generally any compound capable of dissociating into its respective constituent ions when in an aqueous solution.
An acid is categorised as strong or weak depending on whether it can dissociate completely or partially. A strong acid dissociates completely in water.
According to this question, HA, when added to water, dissociates into H+ and A- ions, hence, is a strong acid.
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list the 3 pKa's for H3PO4
Answers
Answer:
The three pKa values for phosphoric acid (H3PO4) are 2.12, 7.21, and 12.32.
select all of those molecules from the list that are examples of lipids. multiple select question. a. oils b. cholesterol c. dna d. phospholipids e. glycogen
Answers
All of the lipid compounds are soluble in organic solvents but not in water. Among the given examples, the lipids are oils, cholesterol and phospholipids. The correct options are A, B and D.
What are lipids?The organic compounds which consists of carbon, hydrogen and oxygen atoms and they form the framework for the structure and function of living organisms are called lipids.
These compounds are non-polar molecules which are soluble only in non-polar solvents and it is insoluble in water. They are composed of fats and oils. They are energy rich molecules which provide energy to perform different processes.
Thus the correct options are A, B and D.
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determine the volume of liquid in each graduated cylinders.
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At the south Texas nuclear power plant, uranium atoms are split in order to create heat. The heat is used to make steam, which turns a generator to make electricity. What energy changes takes place during this process?
A-Chemical energy to nuclear energy to electrical energy to heat energy
B-Mechanical energy to nuclear energy to heat energy to light energy
C-mechanical energy to heat energy to chemical energy to electrical energy
D-nuclear energy to heat energy to mechanical energy to electrical energy
Answers
Answer:
Inside the reactor
In a nuclear reactor the uranium fuel is assembled in such a way that a controlled fission chain reaction can be achieved. The heat created by splitting the U-235 atoms is then used to make steam which spins a turbine to drive a generator, producing electricity.
In a chemical reaction is a new substance obtained? Explain your answer
Answers
what is independent (manipulated variable) on the graph
A: mass
B: grams
C: volume
D: density
Answers
How to I make a strength potion?
Answers
Answer:
Hopefully this helps!
Explanation:
In the Brewing Stand menu, you place ingredients in the top box and the potions are created in the bottom three boxes. To make a Potion of Strength (3:00), you will need 1 water bottle, 1 nether wart, and 1 blaze powder.
How would you prepare ketone from a suitably substituted alkyl bromide containing four carbon atoms in the molecule?
Answers
A combination of -carbon alkylation and -dicarboxylic acid decarboxylation is required to create methyl ketone from an acetoacetic ester or an alkyl halide. The process involves the use of a secondary halide or a methyl halogen.
How is acetoacetate used by the body?
Acetoacetate and -hydroxybutyrate are metabolic byproducts of fatty acid oxidation that are used as fuel in extrahepatic tissues. The production and use rates have an impact on their blood level. Oxidation increases as their serum levels do as well.
Does the brain use acetoacetate?
Glucose serves as the main fuel source for supplying the brain's energy requirements. However, the brain uses ketones, such as acetoacetate or beta-hydroxybutyrate, as energy sources in some circumstances, such as diabetes, famine, during the nursing period, and the state of deep sleep.
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what is the mass in grams of 1.204x10^24 atoms of carbon
Answers
Which of the following would a chemist be most likely to study?
A. the structure of a building
B. the materials to make a strong structural parts of a building
C. flood control around a building
Answers
What a chemist would likely study would be the materials to make strong structural parts of a building. The correct option is; B. the materials to make a strong structural parts of a building.
What do inorganic chemists do?Inorganic chemists are employed in fields ranging from mining to microchips. Their work is based on understanding the behavior and analogues for inorganic elements, and how these materials can be modified, separated, and used. Inorganic chemists work in the science field to study the properties of inorganic chemical compounds, such as metals and minerals.
Their duties include taking samples; using specialized equipment to research and investigate molecules, substances, and mixtures; and developing highly complex analyses of your findings. In conclusion, an inorganic chemist might develop metal materials that provide strong structural parts for buildings.
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