Answers
Answer:
A catalyst is a substance that speed up the chemical reaction or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. Catalyst is a process of adding a catalyst to facilitate a reaction. A catalyst works by providing an alternative reaction pathway to the reaction of product.
Explanation:
Hope This Helps You!!!
Related Questions
What mass (grams) of sodium sulfate would be formed by the complete reaction of 120.0 grams of sodium hydroxide?
Answers
Answer:
The mass of sodium sulfate formed by the comolete reaction of 120.0 grams of sodium hydroxide is 142.04 grams.
Explanation:
The balanced chemical equation for the reaction between sodium hydroxide and sulfuric acid is:
2NaOH + H2SO4 -> Na2SO4 + 2H2O
From the equation, we can see that 2 moles of sodium hydroxide react with 1 mole of sulfuric acid to form 1 mole of sodium sulfate. We can use this information, along with the molar masses of the compounds, to calculate the mass of sodium sulfate formed.
First, we need to convert the given mqss of sodium hydroxide to moles. The molar mass of sodium hydroxide is 40.00 g/mol, so:
Moles of NaOH = Mass of NaOH / Molar mass of NaOH
Moles of NaOH = 120.0 g / 40.00 g/mol
Moles of NaOH = 3.00 mol
Next, we can use the mole ratio from the balanced equation to calculate the moles of sodium sulfate formed:
Moles of Na2SO4 = Moles of NaOH / 2
Moles of Na2SO4 = 3.00 mol / 2
Moles of Na2SO4 = 1.50 mol
Finally, we can convert the moles of sodium sulfate to grams using its molqr mass of 142.04 g/mol:
Mass of Na2SO4 = Moles of Na2SO4 x Molar mass of Na2SO4
Mass of Na2SO4 = 1.50 mol x 142.04 g/mol
Mass of Na2SO4 = 213.06 g
Therefore, the mass of sodium sulfate formed by the complete reaction of 120.0 grams of sodium hydroxide is 213.06 grams.
Macon is 50 miles away from Atlanta. If it takes Jim one hour to drive from Macon to Atlanta on Monday but takes him an hour and a half on Tuesday, what happened to his speed?
Group of answer choices
It decreased
It increased
It averaged out to the same speed
It stayed the same because the distance stayed the same
Answers
Answer:
it decreased
Explanation:
the distance stayed the same, and if it takes him longer to get somewhere than it did another day, it would mean his speed decreased.
When an object radiates heat, the strength of this radiation far from the object decreases when distance from the source increases as shown in the graph below:
That is, radiated heat is much stronger near its source.
The universe is full of heat that was radiated by a source that no longer exists. This heat is known as cosmic background radiation. Cosmic background radiation is not stronger in any one direction or part of the universe than in others.
The following image is a map of the cosmic background radiation. Red areas are only 0.0002 K hotter than the blue areas. The overall temperature of the radiation is 2.725 K.
Image by the WMAP team, courtesy of the Legacy Archive
for Microwave Background Data Analysis (LAMBDA) supported by NASA
What does the uniformity of this radiation imply about its source?
A.
The source of cosmic background radiation filled the entire universe.
B.
The source of cosmic background radiation moved randomly.
C.
The source of cosmic background radiation existed for a very short time.
D.
The source of cosmic background radiation existed for a very long time.
Answers
The uniformity of the cosmic background radiation implies that the source of the radiation filled the entire universe.
What is radiation?Radiation refers to the emission of energy in the form of waves or particles through space or a material medium. This energy can be in the form of electromagnetic waves, such as visible light, radio waves, and X-rays, or it can be in the form of particles, such as alpha and beta particles, neutrons, and protons. Radiation can be natural, such as from the sun, or it can be man-made, such as from nuclear power plants and X-ray machines. Radiation can have both beneficial and harmful effects, depending on the amount and type of radiation and the way it is used or encountered.
Here,
This is because the radiation is not stronger in any one direction or part of the universe than in others, indicating that the source was uniformly distributed throughout space. If the source had moved randomly or existed for a very short or very long time, it would not be expected to produce such a uniform distribution of radiation.
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How many electrons do two ethylene monomers () share to form a covalent bond?
Answers
Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.
Its 2
Answer:
2 would be the amount to form a covalent bond
gold is used for making ornaments give reason
Answers
Answer:
Because looks good for a Christmas tree.
Explanation:
Gold ornaments look pretty shiny and cool to look at.
Hope I helped!
S plus 11r minus fifteen
Answers
Answer:
s+11r-15
Explanation:
What is the empirical formula for a
compound that contains 0.126 mol CI
and 0.44 mol O?
Answers
Answer:
In Explanation
Explanation:
The empirical formula of a compound is the simplest whole-number ratio of atoms in a molecule. To find the empirical formula of a compound that contains 0.126 mol CI and 0.44 mol O, we can divide the number of moles of each element by the smallest number of moles among all the elements present. This will give us the simplest ratio of atoms in the compound.
First, we can divide the number of moles of CI by the number of moles of O:
CI/O = 0.126 mol / 0.44 mol = 0.2857
This means that for every atom of oxygen, there are 0.2857 atoms of chlorine.
To simplify this ratio, we can multiply both sides of the equation by the smallest whole number which will make the ratio a whole number. In this case, we can multiply by 4, so the ratio becomes:
CI/O = 4*0.2857 = 1.1428
So the simplified ratio of atoms in the compound is 1 atom of chlorine for every 1 atom of oxygen. The empirical formula is ClO
Answer:
Cl2O7
Explanation:
Didn't round ratio.
research to find out to physicaly properties of the element selected for each families. the physical properties are: density, boiling, melting, point and conductivity. In additional,name at least two common uses for every element
Answers
A physical property of a pure substance is anything that can we can observe without changing its identity.
What are the properties of the density, boiling, melting point, conductivity.
Density:
The density is property of matter which expresses a relationship of mass to volume.
Melting:
The melting pint is the physical property because we can determine the melting point of a substance without changing its chemical composition.
Boiling:
As the liquid matter is heated further it eventually boils or vaporizes into a gas at the boiling point.
Conductivity:
Conductivity is the physical property because the identity of the substance does not change.
So we can conclude that a physical property of a pure substance is anything that can we can observe without changing its identity.
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The irreversible isomerization A
B was carried out in a batch reactor and the following concentration time data were obtained:
Time vs Concentration data in a Batch reactor
t 0 3 5 8 10 12 15 7.5
mol/h 4 2.89 2.25 1.45 1.0 0.65 0.25 0.07
Determine the reaction order,
, and the specific reaction a rate constant, k, using any method of your choice.
Answers
The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.
The term "kinetics" refers to the study of reaction rates, which are determined by measuring the concentration of reactants and products as a function of time.Kinetics experiments can be used to determine the reaction rate and order of reaction. A chemical reaction's rate is defined as the change in the concentration of a reactant or product per unit time. The order of a reaction refers to the number of molecules that must react to produce a product. The order of reaction can be determined by measuring the initial rate of the reaction as a function of concentration.Methods for determining the reaction rate order include the initial rate method, the half-life method, and the integrated rate method. The initial rate method determines the reaction order by measuring the initial rate of the reaction at different reactant concentrations. The half-life method determines the reaction order by measuring the time it takes for the reactant concentration to decrease by half.The integrated rate method determines the reaction order by measuring the concentration of the reactant or product at different times.The specific rate constant can be determined by using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and frequency factor. The frequency factor can be determined by measuring the rate constant at different temperatures.For such more question on polymerization
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Question 7 of 10If two atoms are bonded with a bond energy of 455 kJ, what must be done tobreak the bond?O A. The bond will break with no energy added or removed.B. The bond order has to go up by one.O c. 455 kJ of energy must be added.D. 455 kJ of energy should be taken from the reaction and put intothe surroundings.SHIRT
Answers
According to the explanation given in a previous session about endothermic reactions, in this type of reaction we need to add energy in order for the reaction to occur, therefore if the bond has an energy of 455 kJ, we need to add this amount of energy to break it, therefore the answer will be letter C
a jaguar can run up to 50 miles per hour, how many feet can he run per second? give your answer in scientific notation to one and three significant figures.
Answers
Answer:
50x10^0
Explanation:
20 points!
Which two structures produce energy that cells can
use?
A and B
B and C
C and D
D and A
Answers
Answer:
c and d
Explanation:
mitochondria and vacoule
Answer:
It is actually D and A
Explanation:
I took this assignment before on edge and the guy who said C and D is wrong
What is the atomic number of this atom?
6
8
9
16
Answers
The atomic number of this atom : 8
Further explanationGiven
Atomic model (attached)
Required
The atomic number
Solution
To determine the atomic number of an element, we can look at the number of electrons or the number of protons, because
atomic number = number of protons = number of electrons in neutral atoms
While the mass number is the number of neutrons + the number of protons located in the atomic nucleus
The charge of each of these atomic sub particles:
electron: charge -1proton: charge +1neutron: not charged / 0If we look at this atomic model, there are 8 electrons in the shell, consisting of 2 electrons in the first shell and 6 electrons in the second shell (which can also be called valence electrons)
Whereas in the atomic nucleus there are 8 protons and 10 neutrons
Answer:8
Explanation:
You just drove from Washington into Canada. You are driving a 1966 Ford Mustang. You notice the road sign says 100. Why are the other cars not speeding past you? Explain with a calculation, show your work. Remember 2.54 cm = 1 in.
Answers
Because the speed limit sign is in kilometres per hour and the driver is accustomed to miles per hour, no other cars are passing too quickly. The permitted speed is roughly 62 mph.
How do speed limit signs work?A regulatory sign is the speed limit sign. The purpose of speed limit signs is to inform drivers of the legal maximum and minimum speeds that are required of them. Drivers are not permitted to go over the limit stated by the sign.
What is the top speed at which a car can pass a procession?When approaching or passing a troop, police, or military procession, or when driving past construction workers fixing roads, a motor vehicle's driver must travel at a pace of no more than 25 kph.
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Which number represetns a coefficient?
2
3
4
7
Answers
Scientists discover remains of wooden structures near a Celtic runes site. What kind of testing will indicate when the stones were moved into place by the Celts?
Carbon dating
Radioactive dating
Answers
Answer:
Carbon
Explanation:
Bc i got this question on my test
Answer:
A. Carbon dating
Explanation:
I took the test proof
A piece of black onyx was cut into a rectangular solid measuring 5.10 cm by 5.10 cm by 2.50 mm . What is the volume in cubic centimeters?
Answers
Answer:
\(Volume = 6.5025cm^3\)
Explanation:
Given
Initial Form: Onyx
Final Form: Rectangular Solid
Dimension of Solid = 5.10 cm by 5.10 cm by 2.50 mm
Required
Volume of the solid (in cm³)
The volume of a solid is calculated as thus;
\(Volume = Length * Width * Height\)
Assume the following;
\(Length = 5.10cm\\Width = 5.10cm\\Height = 2.50mm\)
The first thing to do is to convert the assumed height from mm to cm
Given that;
\(1mm = 0.1cm\)
This implies that
\(2.50mm = 2.50 * 0.1cm\\2.50mm = 0.25cm\)
Hence, the dimension of the solid in cm is:
\(Length = 5.10cm\\Width = 5.10cm\\Height = 0.25cm\)
The Volume is then calculated as;
\(Volume = 5.10cm* 5.10cm * 0.25cm\)
\(Volume = 6.5025cm^3\)
Hence, the volume of the rectangular solid is \(Volume = 6.5025cm^3\)
Which diagrams best characterize a pure element? Pick all that apply
Answers
Step 1 - Understanding what is a pure element
A pure substance is a substance that is not mixed up with any other substances. Water, for example, is a pure substance, as well as alcohol (ethanol). But if we mixture water and alcohol, we have a mixture, not a pure substance.
A pure substance is therefore composed only of molecules of the same kind. However, a pure substance is not the same thing as a pure element. A substance may be formed by different elements, such as water, which is formed by two elements, H (hydrogen) and O (oxygen).
A pure element is thus a pure substance formed by only one type of element. Some examples are hydrogen gas, H2, oxygen gas, O2, and so on. Note that they are pure elements because they are pure substances (they're not mixed with anything else), but are formed by just one kind of atom.
Step 2 - Using the definition of pure element to solve the question
We are looking for a substance formed by only one kind of atoms. Therefore, in the pictures, we should only select those squares containing balls (atoms) of the same kind.
Note that the 2nd and the 3rd squares both have several kinds of atoms, thus constituting a mixture and a pure substance, respectively, but never a pure element.
Squares 1 and 4, on the other hand, show only one kind of atom. They correctly represent, therefore, pure elements.
Which strand of hydrocarbons is used to produce plastic?
O Strand 2
O Strand 3
O Strand 4
●Strand 1
Answers
The strand 1 of hydrocarbons is used to produce plastic, hence option D is correct.
Raw resources like natural gas, oil, or plants that have been processed into ethane and propane are used to make plastics. The subsequent "cracking" procedure uses heat to transform ethane and propane into ethylene and propylene. To produce various polymers, these components are mixed.
Propylene is a substance found in large quantities in petroleum. In order to speed up chemical processes, refiners combine heated propylene with a catalyst to create plastic. Propylene molecules start to cluster together like beads on a thread as a result.
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what's a petroleum industriously
Answers
Answer: Petroleum is a naturally occurring liquid found beneath the earth’s surface that can be refined into fuel. Petroleum is a fossil fuel, meaning that it has been created by the decomposition of organic matter over millions of years. Petroleum is formed when large quantities of dead organisms–primarily zooplankton and algae–underneath sedimentary rock are subjected to intense heat and pressure.
Explanation:
Answer:
Given to industry; acting or working with diligence; sedulous: as, a person industrious in business.
Marked by industry; done with or characterized by diligence; busily pursued, performed, or employed: as, an industrious life; industrious researches.
Expert; clever; shrewd.
Hope this helped
Explanation:
A cube with sides 4cm. It's mass is 54g. will it sink or float ?
Answers
If I put you on a goat
Put you in some water
Now you’re gonna float
Physicians tend to use units of calories ,in part because that is what their patients use and understand .Food “Calories “ are actually calories. How many calories are in a calorie?
A.10,000
B.1,000
C.100
D.10
E.1
Please help me what is the answer.
Answers
A sample of gas is held at constant pressure. Increasing the kelvin temperatures of this gas sample causes the average kinetic energy of its molecules
Answers
The gas expands in volume as the temperature rises. The kinetic energy of the gas's molecules increases with temperature. They make greater direct contact with the container's surface. If the container has the ability to expand, the volume rises until the pressure reaches its starting point.
What is kinetic energy ?The energy that an object has as a result of motion is known as kinetic energy. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body holds onto the kinetic energy it acquired during its acceleration until its speed changes.
According to Charles' Law, the volume and Kelvin temperature are directly connected when the pressure on a sample of a dry gas is held constant.
Thus,The average speed and kinetic energy of the gas molecules increase as the temperature rises.
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Brainbreak task:
Write a tweet as if you were Dmitri Ivanovich Mendeleev making his discovery
Answers
Mendeleev sketched out the table he had in mind. Mendeleev created the so-called Periodic Law while assembling these atomic data cards.
What is periodic law?Periodic law is defined as a rule that the elements fall into recurrent groupings when enumerated in order of their atomic numbers, causing elements with similar qualities to appear frequently. "The physical and chemical properties of the elements are periodic functions of their atomic numbers," is how the current Periodic law is best summarized.
Mendeleev found that when all the known chemical elements were arranged in order of increasing atomic weight, the resulting table revealed a periodicity, or repeated pattern, of characteristics within groupings of elements.
Thus, Mendeleev sketched out the table he had in mind. Mendeleev created the so-called Periodic Law while assembling these atomic data cards.
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Which monatomic ions would you expect potassium (Z=19) and oxygen (Z=8) to form?
Answers
The monoatomic ion of potassium is K+ and Oxygen is O2-
The term "monatomic ion" refers to an ion with only one atom. A polyatomic ion is one that has more than one atom, even if they are all from the same element.The monatomic ions generated by potassium (K) and Oxygen (O) are being askedwe will first look for the group number that an element belongs to in order to establish the charge of that element. For non-metals, the charge of the ion is calculated by deducting 8 from the group number For metals, the charge of the ion is equal to the group number.Since K is a metal, its ion is a cation with a charge of 1, and it is a member of group 1A. K+ is hence the potassium's monoatomic ion.similarly oxygen is non metal therefore the monoatomic ion of oxygen is O2−.Learn more about monoatomic ions here:
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Using the table, determine whether adding 11 g of NaNO3 to 25 g of H2O
will produce a saturated or unsaturated solution at 20 degrees Celsius:
Answers
Answer:
\(well \: if \: 11g \: is \: to \: 25 \: grams \: \: \: what \: of \: in \: a \: 100g \: of \: water \:. \: its \: about \: 44g \: which \: is \: signiicantly \: less \: than \: 88 \: \: therefore \: its \: not \: saturated\)
Do you think it's possible for someone to completely eliminate procrastination from their life? Why or why not
Answers
Answer:
No and Yes
Explanation:
This is both possible and impossible. When you put your mind to what you believe, you can achieve it through patience and minded values. Your mind can either be your Greatest enemy or your Best Ally.
What is the name of the compound shown below?
A. 2-pentene
B. 1-propene
C. 2-propene
D. 1-pentene
Answers
The name of the compound shown below is 1- pentene. The correct answer is option D.
A compound is a substance made up of two or more different elements chemically bonded together in a fixed ratio.
1-pentene is an unsaturated hydrocarbon with the chemical formula \(\rm C_5H_{10}\). It is an alkene, which means it contains a carbon-carbon double bond.
The structure of 1-pentene is characterized by a chain of five carbon atoms (pentane) with one double bond between the first and second carbon atoms. The double bond causes the molecule to have a planar structure, with all atoms lying in the same plane. The remaining three carbon atoms in the chain are each bonded to two hydrogen atoms.Therefore, option D. 1-pentene is the name of the compound shown.
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g. Particles in a solid are packed so
close together they can only___
Answers
Answer:
vibrate
Explanation:
im smart trust me
Answer:
vibrate
Explanation:
its simple
how do you find protons in an atom?
Answers
Answer:
Protons are always found in the nucleus of an atom.
Explanation:
Protons and neutrons make up the nucleus of an atom, which is in the center. The electrons "orbit" the nucleus.
Answer:
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules.
Explanation:
The number of protons in the nucleus of the atom is equal to the atomic number (z). The number of electrons in a neutral atom is equal to the number of protons.