What causes the air above a pot of boiling water to become warm?

The air transfers thermal energy to the water vapor.
The water vapor transfers thermal energy to the air.
The particles in the air lose kinetic energy.
The particles in the water vapor gain kinetic energy.

Answers

Answer 1
Sorry wish I knew this one :(
Answer 2

Answer: The water vapor transfers thermal energy to the air.

Explanation:


Related Questions

How many electrons are there in the only energy level of helium, a noble gas? * Two Three Six Eight​

Answers

Answer:

Explanation:

Noble gases are the least reactive of all known elements. That's because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons.

Match the terms below to the correct definitions
3. Atom
1. The mass on the periodic table.
b. Electrons
2. Region surrounding the nucleus where electrons are found.
C. Protons
3. Positively charged center of an atom.
d. Neutrons
4. Particles that differ in number between isotopes.
e. Electron
cloud
5. Vertical column in the periodic table.
1. Nucleus
6. Positively charged particles in an atom.
R. Quark
7. Negatively charged particles in the outermost energy levels of the electron cloud.
8. Table that organizes the elements by properties.
9. Atoms of the same element that have different masses.
h. Atomic
number
1. Mass number
10. Smallest known particle that makes up protons and neutrons.
j. Average
atomic mass
11. All elements in the same one of these has the same number of energy levels in
their electron cloud.
k. Isotopes
12. The smallest form of matter that still retains the properties of an element.
1. Valence
electrons
13. Negatively charged particles in an atom.
m. Group
14. The sum of protons and neutrons in an atom.
n. Period
15. Represents the identity of an element.
o. Periodic
Table

Answers

Answer:

Explanation:

1=i

4=d

5=m

6=c

8=o

9=j

10=a

13=b

14=h

15=l

Theses are the ones i knew

What is the mass of 4.39 mol Na?

Answers

Answer:

101 g Na

Explanation:

To convert between moles and grams, you have to use the molar mass of the substance. The molar mass of sodium is 22.99 g/mol. You use this as the unit converter.

[tex]4.39molNa*\frac{22.99gNa}{1molNa} = 100.9261gNa[/tex]

Round the number to the lowest number of significant figures; 101 g Na.

The mass of 4.39 moles of sodium (Na) is 100.97grams.

HOW TO CALCULATE MASS:The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass. That is;

Mass = no. of moles × molar mass

According to this question, there are 4.39 moles of Na. The molar mass of Na is 23g/mol.

Mass of Na = 4.39 × 23

Mass of Na = 100.97grams.

Therefore, mass of 4.39 moles of sodium (Na) is 100.97grams.

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Help plzzzzz ASAP!!!!!!!

Answers

Answer:

3.  The total number of protons and neutrons in an atom is its mass number.

4.  The mass number of a helium atom with 2 protons and 2 neutrons is 4.

5.  A beryllium atom with 4 protons and a mass number of 9 has 5 neutrons.

6.  The chemical symbol is Ne.   The atomic number is 10.  The mass number is 22.

7.  Neon-22

8.  Not enough information

at room temperature oxygen gas travels at 393.5 meters per second. How fast does oxygen travel in mile per hour ?

Answers

Answer:

Oxygen travels in 1,416,600

Explanation:

Describe the relationship between an element and a compound.

Answers

Answer:

An element is a material that consist of a single type of atom . each atom type contains same number of protons . chemical bonds link elements to form more complex molecules called compound A compound consist of two or more elements held together by covalent or ionic bonds.

are you clear?

A student measures the mass and volume of a
substance and calculates its density as 1.40 g/mL. The
correct, or accepted, value of the density is 1.30 g/mL.
What is the percentage error of the student's
measurement?

Answers

Answer:

The answer is 7.69 %

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual number = 1.30 g/mL

error = 1.40 - 1.30 = 0.1

We have

[tex]p(\%) = \frac{0.1}{1.3} \times 100 \\ = 7.692307...[/tex]

We have the final answer as

7.69 %

Hope this helps you

Scientists and nutritionists have long suspected that high-fructose corn syrup, used to

sweeten soft drinks, is one of the causes of childhood obesity. In a recent study, at the

University of Cincinnati, researchers found that mice that drank water with added

fructose ate less solid food, gained more weight, and put on 90% more body fat than

mice that drank only water. Scientists concluded that fructose may affect metabolism in

a way that favors fat storage.

What is the independent variable?

The mice that drank only water

The presence of fructose in their diet

The quantity of water provided

The weight gained by the mice

Answers

Answer:

The presence of fructose in their diet

Explanation:

The independent variable in an experiment is the type of variable which is changed at intervals in order to study if it has a direct effect on the dependent variable.

The dependent variable in the experiment is the amount of weight gained by the mice in each group and the control group is the mice who drank the water without the fructose added.

Which of the following is an example of how pictures of a planet's surface can provide evidence about the planet's natural resources?

Answers

Answer:

it can show how much green is left. and how climate change is going, and the cloud shows how much oxygen is left in the air.

What do these two changes have in common?
sauce burning on a stove
dry ice sublimating and becoming a gas
Select all that apply.
Both are caused by heating.
Both are only physical changes.
Both conserve mass.
Both are chemical changes.

Answers

Answer:

Both are caused by heating and both are physical and chemicals.

Explanation:

The similarity between the two changes that have common things are

A. Both are caused by heating.

C. Both conserves mass.

D. Both are chemical changes.

What are chemical and physical changes?

The term “physical change” refers to a change in an object's appearance. When there is a change in the surroundings of the object, such as a rise in temperature or pressure, a physical change takes place.

When candles are burned, the wax melts, but as soon as the temperature drops, the wax hardens and solidifies once more.

Here, chemical changes happen because these changes can not be undone again. When a substance changes their appearance, they always have the same mass.

Thus, the correct options are A. Both are caused by heating, C. Both conserve mass, and D. Both are chemical changes.

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when do meanders form in a river?

A.young
B.old
C.mature
D.rejuvenated

Answers

Answer:

The formation of a meander. As the river erodes laterally, to the right side then the left side, it forms large bends, and then horseshoe-like loops called meanders . The formation of meanders is due to both deposition and erosion and meanders gradually migrate downstream.

Calculate the molarity of a NaOH solution that is prepared by diluting 100mL of 0.20M NaOH with 150mL of H2O.

Answers

Molarity of solution = 0.08 M

Further explanation  

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution  

[tex]\tt M=\dfrac{n}{V}[/tex]  

Where  

M = Molarity  

n = number of moles of solute  

V = Volume of solution  

mol of NaOH

[tex]\tt mol=0.2~M\times 100~ml=20~mlmol=0.02~mol[/tex]

molarity

Volume of solution = 100 ml + 150 ml = 250 ml

[tex]\tt M=\dfrac{0.02~mol}{0.250~L}=0.08[/tex]

Element X has two naturally occurring isotopes. The isotope with mass 62.93 amu has a
relative abundance of 69.2%. The isotope with mass 64.93 amu has a relative
abundance of 30.8%. Calculate the average atomic mass of Element X. What is the
identity of Element X?

Answers

Answer: the average atomic mass is 63.546. The element is copper.

Explanation:
To solve this, you multiply the mass of each isotope by its relative abundance as a decimal (for this question, it would be 62.93 * .692 and 64.93 * .308), then you add the two results together. That gives you the average atomic mass. Then, you look at the periodic table to find which element the mass matches to. If there is none, check your math.

A scientist is examining a mixture of nitrogen, hydrogen, and ammonia. The individual pressures that are exerted by nitrogen and hydrogen are 0.26 atm and 0.28 atm, respectively. If the total pressure is 0.90 atm, what is the partial pressure of ammonia? Use P subscript T equals P subscript 1 plus P subscript 2 plus P subscript 3 plus ellipses plus P subscript n.. 0.27 atm 0.36 atm 0.54 atm 0.90 atm

Answers

Answer:  0.36 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

[tex]p_{total}=p_1+p_2+p_3[/tex]

Given :  [tex]p_{total}[/tex] = total pressure of gases = 0.90 atm

[tex]p_{N_2}[/tex]= partial pressure of nitrogen =  0.26 atm

[tex]p_{H_2}[/tex] = partial pressure of hydrogen = 0.28 atm

[tex]p_{NH_3}[/tex]= partial pressure of ammonia = ?

putting in the values we get:

[tex]0.90=0.26 +0.28+p_{NH_3}[/tex]

[tex]p_{NH_3}=0.36atm[/tex]

Thus the partial pressure of ammonia is 0.36 atm

Answer:

B) 0.36 atm

Explanation:

Explain what happens if the nucleus, of an atom, becomes unstable.

Answers

Answer:The unstable nucleus of radioactive atoms emit radiation. When this occurs, a new atom and element are formed. This process is called radioactive decay. It continues until the forces in the unstable nucleus are balanced.

Explanation:

Which is the name of O3?
dioxide
oxygen
trioxygen
monoxide

Answers

The answer is C, Trioxygen

The name for O₃ molecule is trioxygen as it is made up of three oxygen atoms.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Surface water is found in oceans, lakes, reservoirs, streams, rivers,and glaciers. Lakes, rivers, and reservoirs are where humans obtain most of the surface water they use. Aquifers are an underground source of water that humans also use.

Answers

Freshwater on the land surface is a vital part of the water cycle for everyday human life. On the landscape, freshwater is stored in rivers, lakes, reservoirs, and creeks and streams. Most of the water people use everyday comes from these sources of water on the land surface.

by . Figure the density of the liquid in each beaker: The mass and volume of each liquid have been given in Table 1. Using the formula for density and a calculator, figure the density of each liquid and record it in the density column of Table 1. Round and write your answer out to the nearest hundredth. (This means you will have two numbers after the decimal point.) Don't forget to write the units!!!!!! (Hint: The formula was the answer to #2 on the front page.)​

Answers

Answer:

Well what are the numbers but ik that it ius 5

Explanation:

A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water. The paperclip floats. What happens if the student adds a drop or two of dish soap to the water?

Answers

Answer:

Adding soap would cause the paper clip to fall through the water and onto the base of the dish because soap is a surfactant.

Explanation:

The concept surface tension is used here to determine what happens to the paperclip when a drop of dish soap is added to the water. Here the paperclip sink into the water.

What is surface tension?

The property exhibited by the surface of a liquid in order to resist the action of an external force because of the cohesive nature of the molecules is known as the surface tension. Due to this property the surface of a liquid behaves as an extended elastic membrane.

The paperclip float on water because of the high surface tension as the water molecules at the surface are strongly attracted among themselves. But on adding one or two drops of dish soap to water causes the paperclip to sink.

The addition of the drops of dish soap to the water weakens the attraction among the water molecules and thereby lowers the surface tension. As a result of this the surface film disappears and the paperclip sink into the water.

Thus the paperclip fall into the water when a drop of dish soap is added to the water.

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Is the study of the living plants and animals in the ocean

Answers

Answer:

marine biologist

Explanation:

marine biologist

Answer:

marine biologist a scientist who studies creatures that live in ocean water, from bacteria and shellfish to kelp and whales. mean One of several measures of the “average size” of a data set. .organism Any living thing, from elephants and plants to bacteria and other types of single-celled life.

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. The chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production. c. Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. Chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone.

Answers

Answer:

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?  Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.

Explanation:

The statement for small quantities of chlorofluorocarbons so harmful to the ozone layer is "Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone."

What is ozone layer?

The ozone layer is a thin layer of air in the Earth's atmosphere that absorbs nearly all of the sun's damaging UV radiation.

What is CFCs?

CFCs (chlorofluorocarbons) are harmless and nonflammable compounds made up of carbon, chlorine, and fluorine atoms.

The earth's protective ozone layer is destroyed by chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and halons, which shield the earth from damaging ultraviolet (UV-B) rays released by the sun. CFCs and HCFCs also warm the earth's lower atmosphere, causing global climate change.

When some substances are exposed to high UV radiation in the stratosphere, they emit chlorine or bromine. Ozone-depleting chemicals are compounds that contribute to ozone depletion (ODS). Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform are examples of ODS that produce chlorine. Halons and methyl bromide are two ODS that emit bromine.

Because there isn't much ozone in the atmosphere, what little there is is critical for protecting the Earth's surface from excessive UV light from the Sun. It turns out that it reacts with chlorine, which means that chlorine effectively eliminates ozone.

When the chlorine in CFCs combines with ultraviolet light, it releases chlorine, which then reacts with ozone, reducing the protection humans get from ultraviolet light, allowing more CFCs to release chlorine, and so on. Multiple ozone molecules will interact with one free chlorine atom, which is free because UV light has hit the CFC molecule. As a result, the damage it can cause is likely to be significantly more than you might imagine.

Hence the correct option is c.

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Which statement describes a molecule that has a trigonal pyramidal molecular shape?
The molecule has a trigonal planar electron domain geometry with one lone pair.
O The molecule has a tetrahedral electron domain geometry with one lone pair.
O The molecule has a trigonal planar electron domain geometry with two lone pairs.
O The molecule has a tetrahedral electron domain geometry with two lone pairs.

Answers

The statement describes a molecule that has a trigonal pyramidal molecular shape is "The molecule has a trigonal planar electron domain geometry with two lone pairs".

So, option C is correct one.

What is difference between shape and geometry of the molecule?

In finding geometry of the molecule, lone pairs and bond pairs both are included but in finding shape of the molecule only bond pairs are are involve.

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Answer:C

Explanation: Took the test

Why are biopharmaceuticals in high demand?

Answers

Answer:

the market is largely driven by the growing population, increasing burden of chronic disease, and rising inclination toward targeted therapy.

Explanation:

also, the huge demand of biopharmaceutical is facilitated by an accelerating focus in research and related investment.

How many meters is a 50 yards olympic size swimming pool?

Answers

Answer:

An official Olympic Sized pool is 50 meters long by 25 meters wide.

Explanation:

Where do we live a.Troposphere b.Thermosphere c. Mesosphere D.Stratosphere

Answers

Answer:

troposphere

Explanation:

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

We live in the troposphere since 99% of the water vapor in the atmosphere is found here.

How many neutrons make up one of these potassium atoms?

Answers

Potassium has twenty neutrons

Answer:

20

Explanation:

Which of the following is true about metals?
A. They are usually less reflective in luster than metalloids.
B.
They are usually better conductors than nonmetals.
C. They are usually less malleable than nonmetals.
D.
They are usually more brittle than metalloids.

Answers

B. They are usually better conductors than nonmetals

Unit: Scientific Measurement“One, Two, and More Step Problems” – Wksh #2

1.How many g are equal to 345.7 mg?
2.Change 0.00765 kL into mL.
3.How many seconds are there in 2.5 days?
4.How many minutes are there in 1.000 week?
5.How many seconds long is this chemistry class if it lasts 40.0 minutes?
6.A chemistry student’s height is measured at 68.5 inches. How tall is the student in cm?
7.This same chemistry student has a weight of 155 lbs. What is the student’s weight ingrams? (16oz=1lb, 1 oz = 28.34 g)
8.A homerun in a baseball game was measured at 450 feet. How many meters is this equalto?
9.Mount Everest is approximately 8,000 meters high. How many miles high is MountEverest?
10.A 5.0 km race is scheduled for this weekend. How many miles is this race?

Answers

Answer:

1. 0.3457g

2. 7650mL

3. 216000 seconds

4. 10080minutes

5. 2400 seconds

6. 173.99cm

7. 70283.2g

8. 137.16metres

9. 4.968miles

10. 3.105miles

Explanation:

1. 1000mg = 1g

345.7 mg = 345.7/1000

= 0.3457g

2. 1kL = 1000000mL

0.00765 kL = 0.00765 × 1000000

= 7650mL

3. 1 day = 86400s

2.5 days = 2.5 × 86400

= 216000 seconds

4. 1 week = 10080minutes

1.000weeks is equivalent to 1 week, hence there are 10080minutes in 1.000week.

5. 1minute = 60seconds

40.0minutes = 40 × 60

= 2400seconds.

6. 1 inch = 2.54cm

68.5inches = 68.5 × 2.54

= 173.99cm

7. 1Ib = 16oz

155Ibs = 155 × 16

= 2480 oz

1 oz = 28.34 g

2480oz = 2480 × 28.34

= 70283.2g

8. 1 foot = 12 inches

450 feet = 450 × 12

= 5400inches

1 inch = 0.0254metres

5400 inches = 5400 × 0.0254

137.16metres

9. 1 metre = 0.000621 mile

8000 metres = 8000 × 0.000621

= 4.968miles

10. 1 kilometers = 1000 metres

5km = 5 × 1000

= 5000metres

1 metre = 0.000621 mile

5000metres = 5000 × 0.000621

= 3.105miles

Arkeisha and Rodney are having a discussion about the correct use of the term "battery acid." Arkeisha insists that an alkaline battery does not have an actual acid contained within it, but Rodney disagrees and says that all batteries have acid in them. Which student is correct? A. Arkeisha is correct because the fluid in an alkaline battery has a pH between 0.0 and 6.9. B. Arkeisha is correct because the fluid in an alkaline battery has a pH between 7.1 and 14.0. C. Rodney is correct because the fluid in all batteries has a pH between 0.0 and 6.9, including alkaline batteries. D. Rodney is correct because the fluid in all batteries has a pH between 7.1 and 14.0, including alkaline batteries.

Answers

Arkeisha is correct because the fluid in an alkaline battery has a ph between 7.1 and 14.0

Batteries are filled with acidic fluid mostly of sulphuric acid. It have a pH about 0.8. Alkaline batteries are filled with potassium hydroxide or zinc chloride the pH is around 7 and the term battery acid cannot be used here. Thus option A is correct.

What is pH?

pH of a solution is the measure of H+ ion concentration in the solution. It says how acidic or basic the solution is. If the solution has a pH of 7 it is neutral and if its less than 7 it is acidic and a pH of more than 7 is basic.

Battery is an electronic component which converts chemical energy to electrical energy. It consist of an electrolyte and two electrodes. Usually the fluid used in battery is sulphuric acid  and it is called the battery acid.

Nowadays battery acids are replacing by alkaline fluids which are less hazardous than the acids. Most commonly potassium hydroxide, zinc chloride etc. are used as alkaline fluids.

The electrodes used in batteries are commonly zinc and magnesium. Thus, the pH of battery acid about 0.8 and option A is correct.

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Answer question number 2

Answers

Answer:

it would be the second choice

Other Questions
Read the poem below and answer the question that follows.Hanging Fireby Audre LordeI am fourteenand my skin has betrayed methe boy I cannot live withoutstill sucks his thumbin secrethow come my knees arealways so ashywhat if I diebefore the morning comesand mommas in the bedroomwith the door closed.I have to learn how to dancein time for the next partymy room is too small for mesuppose I die before graduationthey will sing sad melodiesbut finallytell the truth about meThere is nothing I want to doand too muchthat has to be doneand mommas in the bedroomwith the door closed.Nobody even stops to thinkabout my side of itI should have been on Math Teammy marks were better than hiswhy do I have to bethe onewearing bracesI have nothing to wear tomorrowwill I live long enoughto grow upand mommas in the bedroomwith the door closed.Source: Lorde, Audre. Hanging Fire. The Black Unicorn: Poems. New York: Kitchen Table: Women of Color Press, 1978. El Camino College. Web. 06 June 2011.Which poetic techniques are illustrated in the opening lines I am fourteen/and my skin has betrayed me/the boy I cannot live without/still sucks his thumb/in secret?alliteration and metaphorallusion and alliterationapostrophe and similepersonification and enjambment what is a technology that exists inside another device called Solve: 5(h 3) = 25 Linder Corporation invested $70,000 cash in marketable securities on September 1. On September 7 the company sold $10,000 of these investments for $15,000. On September 28 Linder sold $6,000 of the securities for $4,000. Required:a. Record the purchase of marketable securities on September 1. b. Record the sale of marketable securities on September 7. c. Record the additional sale of marketable securities on September 28. d. Record the necessary month end fair value adjustment on September 30. The market price for Linder Corporation's remaining unsold securities was $58,000. Describe the ways that Balboa treated the native people he encountered on his expeditions. Why do you think he acted differently to the various groups? who introduced permanent settlement and ryotwari settlement Prior to the invention of agriculture the native Americans traveled from place to place in search of food. These people were known as thisnomadsconquistadorsIndiansAnasazi what are the basic element of selection of profession describe any two of them Mr. Heath owns a game store.He offers workshops where students learn about different kinds of games and how to design their own games.Sia designs a board game in which a card is drawn on each turn. A blue card means move forward 4 squares. A red card means move back 6 squares.Sia begins at 0. She draws a blue card on each of her first three turns.Then Sia draws only red cards and ends up back at 0. How many red cards did Sia draw? Help Me need help please it is due today please help ASAP Slope -2/3 , x-intercept at 3 What is the equation of the line that passes through the point (-6,-7)(6,7) and has a slope of 0? 2. Liz claimed that the polynomial 4x -12 + 2x is a trinomial because it has threeterms.Is Liz correct? Explain your reasoning in complete sentences. Be specific! Which number represents the typical annual pay for factory workers in the nineteenth century? What would the name be of the molecule P2O5? What is the Historical significance of old regime Which of these lines describes the free birds character? What is 1047.04 divided by 16 Consider a simple example economy where there are two goods, coconuts and restaurant meals (coconut-based). There are two firms. A coconut producer collects and sells 10 million coconuts at $2.00 each. The firm pays $5 million in wages, $0.5 million in interest on an old loan, and $1.5 million in taxes to the government. We also know that 4 million coconuts are sold to the public for consumption, and 6 million coconuts are sold to the restaurant firm, which uses them to prepare meals. The restaurant sells $30 million in meals. The restaurant pays $4 million in wages and the government $3 million in taxes. The government supplies security and accounting services and employs only labor, and government workers are paid $5.5 million, collected in taxed by the government. Finally, consumers pay $1 million in taxes to the government in addition to the taxes paid by the two firms.Required:a. Compute GDP for this simple economy using the product approach.b. Compute GDP for this simple economy using the expenditure approach.c. Compute GDP for this simple economy using the income approach.d. Now, suppose that the coconut producer cannot sell 1 million coconuts during the course of the year. These are collected coconuts that are not sold to the public (assume that sales to the other firm, the restaurant, remain the same).e. How does this new piece of information affect your calculations in the expenditure approach? Explain. PLEASE ANSWER REALLY EASY