According to the given information As velocity increases kinetic energy and potential energy.
What is kinetic energy and give an example?Kinetic energy, which may be seen in the motion of an object, atom, or group of particles, is the electricity of motion. Every moving item uses kinetic energy, such as a person walking, a baseball being tossed, a piece of food falling from the a table, or a charge particle in an electromagnetic current.
Why does kinetic energy occur?When potential heat is produced, among other catalysts such as elastic forces or gravity, kinetic is generated. Motion is created by kinetic energy. The velocity of an object increases as force applied to it and it accelerates.
To know more about Kinetic energy visit:
https://brainly.com/question/26590527
#SPJ1
The complete question is -
As velocity____kinetic energy and potential energy
gaseous butane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of carbon dioxide is produced from the reaction of of butane and of oxygen gas, calculate the percent yield of carbon dioxide.
Gaseous butane [tex](CH3(CH2)2CH3)[/tex]reacts with gaseous oxygen (O2) to produce gaseous carbon dioxide [tex](CO2)[/tex] and gaseous water [tex](H2O)[/tex]. If [tex]0.256 g[/tex] of water is produced from the reaction of [tex]1.2 g[/tex] of butane and [tex]1.6 g[/tex]of oxygen, So far i have balanced the equation to be [tex]2 (CH3(CH2)2)CH3) + 13 O2 > 8 CO2 + 10 H2O[/tex]
what is reaction yield?
The reaction yield (absolute yield) of a chemical reaction is the amount of pure and dry product yielded in a reaction. Normally, in order to measure the efficiency of a chemical reaction in organic synthesis, the relative or percentage yield (%) is calculated.To express the efficiency of a reaction, you can calculate the percent yield using this formula: %yield = (actual yield/theoretical yield) x 100. A percent yield of 90% means the reaction was 90% efficient, and 10% of the materials were wasted (they failed to react, or their products were not captured).The percentage yield of a chemical reaction is an important consideration in industrial chemistry. It can be calculated to compare the yield (quantity) of product actually obtained with what could have been obtained in theory, if all of the reactants were converted with no loss or waste.Theoretical yield is what you calculate the yield will be using the balanced chemical reaction. Actual yield is what you actually get in a chemical reaction. Percent yield is a comparison of the actual yield with the theoretical yield.to determine the percent yield: Divide the actual yield made in the lab by the calculated theoretical amount, and multiply by 100. For a synthesis – to find the overall percent yield, multiply the individual percent yields of every step by each otherto know more reaction yield about follow
https://brainly.com/question/27885168
#SPJ4
In three to five sentences, identify the type of bonding that would form between potassium (k) and chlorine (cl). Use electronegativity to justify this bond type. Provide the chemical formula for the resulting compound.
The chemical potassium chloride is created when one potassium ion and one chlorine ion interact in a specific ratio.
Chemical Compound: What is it?Chemical compounds are made up of several molecules, each of which is made up of an element and its constituent atoms in a specific ratio.
Covalent compounds and ionic compounds are the two different types of compounds. Ionic compounds are created by the total transfer of electrons, while covalent compounds are created by sharing electrons.
In response to our inquiry, sodium is a metal that may give an electron to chlorine in order to form an ionic bond. Because chlorine is more electronegative than sodium, it can easily absorb an electron from the latter.
The equation is balanced when
K⁺ + Cl⁻ → Kcl
Thus, it is clear from this that one potassium atom and one chlorine atom combine to produce the ionic compound potassium chloride.
To learn more about chemical compound, here:
brainly.com/question/26487468
#SPJ4
what is the molarity of a hcl solution if 2.50 l is needed to reacted with 12.7 g of al according to the reaction?
The molarity of a HCl solution if 2.50 l is needed to reacted with 12.7 g of al is 5.08 M
What is molarity ?A chemical species' concentration in a solution, specifically the quantity of a solute per unit volume of solution, is measured by its molar concentration.
The number of moles per liter, denoted by the unit sign mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.
Molarity is the number of moles of solute per liter of solution. Mole fraction is the proportion of solute moles to all other moles of substances present. Parts per thousand. grams is mass percentage, the ratio of the solute's mass to the solution's mass multiplied by 100.
Molarity ( M ) = 12.7 mol H₂SO₄ / 2.50 L
= 5.08 M
Thus, the molarity of a HCl solution if 2.50 l is needed to reacted with 12.7 g of al is 5.08 M.
To learn more about molarity follow the link below;
https://brainly.com/question/2817451
#SPJ1
The list below includes some of the properties of ammonia. Identify the physical properties in the list. Check all of the boxes that apply.
• gas at room temperature
• strong, unpleasant odor
• reacts with hydrochloric acid
• dissolves easily in water
• burns in oxygen
The physical properties of ammonia iare as listed below:
gas at room temperature strong, unpleasant odordissolves easily in waterWhat is ammonia?It the compound which is composed of four atoms one is nitrogen and rest are hydrogen.
What are the Physical property?A physical properties are those properties which is measurable and whose values describe the state of a physical system. The favourable changes in the physical properties of a given system is used to describe its changes mostly between the momentary states. Physical properties are referred as a observables. They are not kind of modal properties.
What is chemical property?Chemical property is defined as the characteristic of the particular substance which can be observed in the chemical reaction. Some of the major chemical properties of any substance include toxicity, flammability, pH value, heat of combustion, rate of radioactive decay, and chemical stability.
Thus, we concluded that the physical properties of ammonia are as listed below:
gas at room temperature strong, unpleasant odordissolves easily in waterlearn more about physical properties:
https://brainly.com/question/3434774
#SPJ13
Answer:
- gas at room temperature
- strong, unpleasant odor
- dissolves easily in water
Explanation:
effect of using synthetic fuels on co2 emissions: a compact passenger car that runs on natural gas emits 0.218 kg co2 per mile driven
The output of CO2 and other pollutants discharged into the environment can be greatly decreased by the use of synthetic gas and biofuel. Synthetic fuel for commercial flights and fuel for automobiles are still a long way off, though.
Does coal produce more CO2 than natural gas?When burned in a modern, efficient natural gas power station, natural gas emits 50 to 60 percent less carbon dioxide (CO2) than emissions from a typical new coal plant.
How does the environment get affected by burning natural gas?When burning natural gas for energy, less carbon dioxide (CO2) and almost all other air pollutants are released into the atmosphere compared to when burning coal or petroleum products for the same amount of energy.
To know more about Synthetic fuel visit:-
https://brainly.com/question/981208
#SPJ4
What liquids can I use for my science project? Its a density project and I am trying to find liquids that are not flammable (which means it is not a liquid that catches on fire for no reason), I can use liquids like water, juice, or anything just no flammable liquids at all. It can be syrup, honey, or anything however I am using honey so yeah.
Mercury has the highest density of any liquid. At room temperature, it is the only metal that is liquid.
What is density?Density is defined as the evaluation of how closely something is packed. The relationship between a substance's mass and the amount of space it occupies is known as its density. The concept of density is crucial because it enables us to predict which substances will float and which ones will sink in a liquid.
The density depends on mass and volume of the solution. It is directly proportional to mass and indirectly proportional to volume. So the substance with more mass will have high density.
Thus, mercury has the highest density of any liquid. At room temperature, it is the only metal that is liquid.
To learn more about density, refer to the link below:
https://brainly.com/question/15164682
#SPJ1
which question(s) can be answered from an integrated rate law that cannot be answered by other forms of the rate law? select all that apply.
The question can be answered from an integrated rate law that cannot be answered by other forms of the rate law is 1) how long it will take to use x moles per liter [A] 2) what is [A] after y minutes of reaction.
The rate law defines the relation in between rate and the concentration of the reactants. The integrated rate law describes the reaction at a specific time.
Thus, The question can be answered from an integrated rate law that cannot be answered by other forms of the rate law is 1) how long it will take to use x moles per liter [A] 2) what is [A] after y minutes of reaction.
To learn more about rate law here
https://brainly.com/question/8314253
#SPJ4
what is the percent yield of a reaction if when 5 moles of acetylene (c2h2) is reacted with excess o2 gas, 8 moles of co2 are formed?
A response has an 80% percent yield.
What is percent yield of a reaction?The real yield is calculated as the theoretical yield divided by the theoretical yield multiplied by 100. % Yield = (Actual Yield % Theoretical Yield Numerous factors, which will be covered in later chapters of the course, can cause a chemical reaction's actual yield to be lower than its theoretical yield.
It is beneficial to have a high yield percentage since it shows that there were fewer contaminants present throughout the experiment and it can improve computation accuracy.
Balanced equation is,
2C₂H₂ + 5 0₂----> 4 CO₂ + 2 H₂O
percent yield of reaction is = moles of product/moles of reactant×100
actual moles of acetylene is = 5/2=2.5
actual moles of Co₂ is = 8/4=2
percent yield of reaction is = 2/2.5×100
percent yield of reaction is = 80%.
To know more about percent yield visit:
https://brainly.com/question/25781371
#SPJ4
24 g of methane were burned in an excess of air. What mass of water would be produced in the reaction assuming complete combustion?.
If 24 g of methane were burned completely in too much air, the reaction would result in the production of 54 g of water. Since methane is both the simplest form and the simplest alkane of hydrocarbons.
It is crucial to understand the characteristics of such a novel chemical, saturated hydrocarbons. The following list of methane's key characteristics includes: Methane's chemical structure is CH4. With a specific gravity of 0.554, methane gas is lighter than air.
An organic substance called a hydrocarbons is made completely of hydrogen and carbon. Group 14 hydrides include things like hydrocarbons.
(18 g H2O/mole H2O) * (2 moles H2O/mole CH4) * (1 mole CH4/16 g CH4) * (24 g CH4) = 54 g H2O.
Learn more about hydrocarbons here
https://brainly.com/question/17578846
#SPJ4
The product of the pressure and the volume of one mole of a gas is equal to the product of the absolute temperature and the universal gas constant.
The rule that states the absolute temperature of a gases and the universal gas standard are equivalent to the product of the volume and the pressure of a single gram of an ideal gas.
What is an example of temperature in chemistry?The associated with the motion energy of atoms or molecules as in system is measured by temperature. The water droplets in a hot cup coffee move more quickly than the hydrogen atoms in a cup of iced tea because the average kinetic energy of hot coffee is higher.
What factors in chemistry affect temperature?The addition of energy (heating), which raises the temperature, increases the movement of atoms and molecules. By removing energy (cooling), atoms and molecules slow down and the temperature drops as a result.
To know more about temperature visit :
https://brainly.com/question/12035620
#SPJ4
After the krebs cycle only a small portion of the energy of glucose has been converted to atp. At this point the majority of usable energy is contained in.
At this point, most of the available energy is contained in the reduced electron carriers NADH and FADH₂.
What is oxidative phosphorylation?Oxidative phosphorylation or electron transfer-associated phosphorylation or terminal oxidation is a metabolic pathway in which cells use enzymes to oxidize nutrients and release chemical energy to produce adenosine triphosphate. This takes place in mitochondria in eukaryotes.
Oxidative phosphorylation often produces the greatest amount of energy produced within the cell. The combination of glycolysis and the citric acid cycle of the Kreb cycle alone yields only four ATPs. Most or most of the remaining energy is stored in the electron carriers NADH and FADH₂.
To know more about oxidative phosphorylation visit:
https://brainly.com/question/29104155
#SPJ4
Which ONE of the following objects is accelerating?
Read over each answer choice carefully before choosing one.
A sign is hanging on a pole in front of a shop
A car is sitting still at a stop light. It's current speed is 0 mph
A skydiver falling down towards Earth opens their parachute, causing them to
slow down from 50 m/s to 2 m/s
A lion walks East across the savannah at a speed of 5 miles per hour
Option a is correct choice a sign is hanging on a pole in front of a shop Because hanging object has gravitational acceleration.
Is the acceleration of 9.8 gravitational?9.8 m/s/s is the most precise measurement of the gravitational acceleration. This number (to the second decimal place) exhibits a small range that is primarily influenced by altitude.
The term "gravitational acceleration," abbreviated "g," is used in physics to describe the strength of a gravitational field. Meters per second squared (m/s 2) is the unit of measurement. 1 g is approximately 9.8 m/s 2 at the earth's surface.
Newton's universal law of gravitation states that the force of attraction between any two bodies is inversely proportional to the square of the distance between them and directly proportional to the product of their masses.
To know more about gravitational acceleration visit:
https://brainly.com/question/14374981
#SPJ1
by what factor does a 100-fold increase in the concentration of h affect the number on the ph scale?
The increase in the concentration of H ions by 100 folds, decreases the pH by 2 units.
What is pH?
pH is the measure of the acidity or basicity of the aqueous solution or any given liquid which can be indicated by numbers ranging between 0-14. 7 is the neutral, anything below 7 is acidic and anything above 7 is taken as basic. It also is a measure of H ions in any given solution.
pH can be calculated as,
pH = -log [H+]
Ration of [H+], [H+2] / [H+1] =100
Change in pH, = pH2 - pH1 = -log [H+2] / [H+1] = -log [100] = -2
Therefore, pH decreases by 2 units, when the H ion concentration is increased by 100 folds. Here negative sign indicates the decrease in the pH.
To learn more about pH click on the given link https://brainly.com/question/172153
#SPJ4
suppose that copper (i) phosphide (cu3p) is added as an impurity to vanadium (iii) phosphide (vp), what types of vacancies are likely to form
copper phosphate = c
Copper phosphate is the given compound.Cu₃(PO₄)₂Copper (II) phosphate is another name for it.Cupric salt of phosphoric acid is another name for it.The molar mass of this compound is 380.58 g/mol.It is light blue in color and comes in the form of powder.It is not water soluble.Mineral acids and ammonia dissolve it.Copper is the cation in this compound, while phosphate is the anion.When it comes into contact with strong acids like sulfuric acid, it produces phosphoric acid and copper salt.3 Cu2CO3(OH)2 + 4H3PO4 2Cu3(PO4)2 + 3CO2 + 9H2O
To learn more about copper please click on below link
https://brainly.com/question/13677872
#SPJ4
A 10. 0 ml syringe contains 0. 10 g of nitrogen gas at 0. 0 degrees celsius. What is the pressure inside the syringe? 8. 0 atm 0. 80 atm 224 atm 0. 22 atm.
The pressure inside the syringe is 0.68 Pa
What is ideal gas equation?The ideal gas law, also known as the general gas equation, is the equation of state for a hypothetical ideal gas. It has some limitations, but is a good approximation of the behavior of many gases under many conditions.
It is specified by the following formula:
PV = nRT
P = nRT/V
n = mass/ molar mass
n = 0.1/28
n = 0.003 moles
R = 8.314 J/(mol.K)
T = 0°C or 273 K
V = 10 ml
P = nRT/V
P = 0.003× 8.314×273/10
P = 0.68 Pa
To know more about ideal gas equation visit:
https://brainly.com/question/3637553
#SPJ4
during one of the trials in this project, the initial weight of ethanol is 77 g and after the combustion, the final weight of ethanol is 10. what are the number of moles of ethanol consumed during the experiment? the molar mass of ethanol is 46.07 g/mol. report and round your answer to the first decimal place.
The number of moles of ethanol consumed during the experiment is
The combustion reaction is given as :
C₂H₅OH + 3O₂ -----> 2CO₂ + 3H₂O
the initial weight of ethanol = 77 g
the final weight of ethanol is = 10 g
initial moles = mass / molar mas
= 77 / 46.07
= 1.67 g
final moles = mass / molar mass
= 10 / 46.07
= 0.21 mol
the moles consumed = 1.67 - 0.21 = 1.46
thus, during one of the trials in this project, the initial weight of ethanol is 77 g and after the combustion, the final weight of ethanol is 10. the number of moles of ethanol consumed during the experiment. the molar mass of ethanol is 46.07 g/mol is 1.46 mol
To learn more about moles here
https://brainly.com/question/26416088
#SPJ4
What can dehydration lead to?.
Dehydration can range from mild to severe, depending on how much fluid you lose from your body. Thirst and black urine are two early indicators of dehydration. The body is attempting to enhance water intake and reduce water loss by doing this.
Other signs can include:
a feeling of faintness or dizzinessheadache fatiguedry eyes, lips, and mouth, and infrequently passing little volumes of the urine (less than three or four times a day)Strength and stamina can also be lost as result of dehydration. It is a major contributor to heat exhaustion.By consuming extra liquids, you should be able to reverse dehydration at this point.Chronic dehydration can affect your kidney function and raise your risk of kidney stones. In addition, it can also lead to the muscle damage and constipation.
To know more about dehydration, please refer
https://brainly.com/question/1301665:
#SPJ4
Measured value 28.7053 cm, which has six significant figures.
Round the measurement to four significant figures.
Measured value 28.7053 cm, which has six significant figures . Round the measurement to four significant figures is 28.71 cm
To count the significant number there are some rules to follow are :
all non zero number are significant figure.zeros between the two non zero number are count as significant figurea trailing zero in the decimal portion only are significant figure.if zero precedes the bon zero number then it is not consider as the significant figure.zero at the end or on the right side of the given number also consider as significant figure.Thus, Measured value 28.7053 cm, which has six significant figures . Round the measurement to four significant figures is 28.71 cm
To learn more about significant figure here
https://brainly.com/question/17345250
#SPJ1
Which compound is an exception to the octet rule?
H₂O
HCI
CCL
CIF 3
drag and drop each of the following conditions so that it matches up with the type of shift it would create in the oxygen-hemoglobin dissociation curve.
Left Shift: Lower temperature, lower 2,3-BPG concentration, lower PCO2 levels, higher pH. Right Shift: Increasing PCO2, increasing 2,3-BPG concentration, lowering pH, and raising temperature .
Explain what temperature is.Temperature is a unit used to represent hotness or coolness on any of a number of scales, including Fahrenheit and Celsius .Heat energy will logically go from a hotter (body with a higher temperature) to a colder (body with a lower temperature) according to temperature (one at a lower temperature).
What is the temperature unit?According to the International System of Units, Kelvin, which is denoted by the letter K, is the SI unit of temperature .The Kelvin scale is widely recognized or used in the scientific and technical disciplines. To measure temperature, however, the majority of the globe uses the Celsius or Fahrenheit scale.
To know more about temperature visit :
https://brainly.com/question/12035620
#SPJ4
explain why the intermolecular force is always stronger at the surface of a liquid than in the middle of the liquid.
2. Magnesium metal reacts with sulfuric acid (H₂SO4) forming hydrogen gas and magnesium
sulfate
Answer: Mg(s) + H2SO4(aq) + H2(g)
Explanation:
Magnesium sulfate:
Magnesium sulfate is a chemical compound, a salt with the formula .
Magnesium reacts with dilute Sulphur acid to form Magnesium sulfate and Hydrogen gas.
Mg(s) + H2SO4(aq) + H2(g)
This reaction is a single displacement reaction and also exothermic.
Therefore, the balanced chemical equation for the reaction of magnesium solid with sulfuric acid to form hydrogen gas and magnesium sulfate is
Mg(s) + H2SO4(aq) + H2(g)
.
what mass of naoh(s) must you dissolve in enough water to make 5.00 x 102 ml solution in order to create a 0.267 m solution?
Mass of NaOH must you dissolve in enough water to make 5.00 × 10² mL solution in order to create a 0.267 M solution is 5.32 g.
Given that :
molarity = 0.267 M
volume = 5.00 × 10² mL = 0.5 L
molarity expression is given as :
molarity = moles / volumes in L
moles = molarity × volume
moles = 0.267 × 0.5
moles = 0.133 mol
mass of NaOH = moles × molar mass
mass of NaOH = 0.133 mol × 40 g/mol
mass of NaOH = 5.32 g
Thus, Mass of NaOH must you dissolve in enough water to make 5.00 × 10² mL solution in order to create a 0.267 M solution is 5.32 g.
To learn more about molarity here
https://brainly.com/question/16727614
#SPJ4
6 kg of coal (carbon) is burned in air. what mass of carbon dioxide will be produced? ignoring any impurities in the coal, the chemical equation for this reaction is: c o2 → co2
Answer:
14kg
Explanation:
your equation is wrong ?
it is meant to be c+o=co
we have the mass of c so we calculate the mole and mole =mass\molar mass
molar mass(M) of carbon is 12 so our mole is
6/12=0.5 mol
note the unit of mole is mol
so since from the equation 1c+1o=1co we see that there is an invincible 1 there fore c and co is 1:1 so therefore o.5 mol of c will produce o.5 mol of Co
if the ratio was 1:2 it would have been therefore 0.5 mol of c will make 0.5/2 mol of Co.
but that is not the case so back to what we were saying. note(just saying and example,not part of answer )
to find mass of Co it will be mole = mass/ M
so mass= mole × molar mass and the molar mass of Co is (12)+(16)=28 kg/mol so our mass will be 0.5×28= 14kg
therefore the mass of Co is 14kg
The diagram above shows the repeating groups of atoms that make up two samples. Both samples are green gases at room temperature. Will the other properties of the two samples be the same or different?
It is important to note that the properties of the green gas of the sample can remain the same because the repeating groups of atoms that make up the sample have an identical quantity of atoms and an identical temperature.
What is green gas?Greenhouse gases are defined as gases that absorb and emit radiant energy in the thermal infrared spectrum, causing the greenhouse effect. The following according to scientific studies account for the primary or key greenhouse gases in the atmosphere of the earth:
Water vaporcarbon dioxidemethanenitrous oxide, and ozoneNote as well that one of the four basic forms in which matter exists is gas. A pure gas can be composed of individual atoms, elemental molecules composed of one kind of atom, or complex molecules composed of many atoms. A gas mixture, such as air, comprises a variety of pure gases.
Gas contracts when pressure is applied to it. When the pressure is discharged, expansion occurs with the gas.
Learn more about the properties of gas:
https://brainly.com/question/3450728
#SPJ1
when a reaction is properly refluxing, where should you see the vapors from the heated mixture? select one: vapors should be escaping from the top of the condenser. vapors should be contained to the reaction flask. no visible vapors should be formed. vapors should be about 1/3 up the condenser height.
Answer: Vapors should be contained to the reaction flask
Explanation: O Vapors should be about 1/3 up the condenser height.
How many different uncharged (neutral) stable hydrogen atoms can you build? In the space below, briefly describe the similarities and differences in their composition.
The number of different uncharged (neutral) stable hydrogen atoms which one can build is two and the similarity is that they both have a single proton while the difference is that one has a neutron while the other has zero neutron.
What is an Atom?This is referred to as the smallest particle of an element which can exist and has subatomic particles such as proton and neutron.
The different uncharged (neutral) stable hydrogen atoms which one can build include:
1p & 0n & 1e1p & 1n & 1eFrom this we can infer that they both have one proton and electron and one has no neutron while the other has just one.
Read more about Atom here https://brainly.com/question/6258301
#SPJ1
Which of the following is the end product of a natural radioactive series?
A. Stable isotopes of iodine
B. Stable isotopes of lead
C. Bismuth
D. Thorium
Answer:
Bismuth
Explanation:
The decay constant of the end product of natural radioactive series is zero because at the end of the radioactive decay, the product formed is a stable one and will not undergo any further decay in the future.
in an effusion experiment, it was determined that nitrogen gas, n2 , effused at a rate 1.812 times faster than an unknown gas. what is the molar mass of the unknown gas?
The molar mass of unknown gas is 91.93 g/mol
It is Given that
[tex]r_{1}[/tex] of N2 gas = 1.812 x [tex]r_{2[/tex] of unknown gas
r1 = effusion rate of N2
r2 = effusion rate of unknown gas
[tex]r_{1}[/tex] = 1.812 [tex]r_{2[/tex]
[tex]\frac{r1}{r2}[/tex] = [tex]\sqrt[2]{m2 /m1}[/tex] =1.812
where molar mass m1 of N2 = 28 g/mol
molar mass m2 of unknown gas =?
[tex]\sqrt{m2/28}[/tex] = 1.812
[tex]\frac{m2}{28}[/tex] = [tex]1.812^{2}[/tex]
m2 = [tex]1.812^{2}[/tex] x 28
m2 = 91.93 g/mol
To learn more about molar mass click here:
https://brainly.com/question/20552052
#SPJ4
What is sanitizer testing?.
Manufacturing companies may verify ingredients and check for contaminants to make sure their products are safe to use by testing the raw materials that go into their sanitizers and disinfectants.
What does sanitizer really mean?a material or item used to lessen or get rid of harmful elements (like germs) on surfaces. As of the beginning of September, sales with alcohol-based hand sanitizers remained roughly 17% higher than they were during the same time last year.
Is booze an effective sanitizer?However, broadly speaking, sanitizers with 60 to 95% alcohol are appropriate. The Center fer Prevention and Control suggests formulations using 80% (percent quantity) ethanol and 75% isopropyl alcohol.
To know more about sanitizer visit:
https://brainly.com/question/29545088
#SPJ4
