A glass container was initially charged with 1.95 moles of a gas sample at 3.75 atm and 21.7 °C. Some of the gas was released as the temperature was increased to 28.1 °C, so the final pressure in the container was reduced to 0.998 atm. What quantity in moles of the gas sample are present at the end?

Answers

Answer 1

Answer:

45830.4 moles

Explanation:

Ideal gas law is the hypothetical equation in which the pressure, volume, and temperature of the gas are directly related. It can be denoted as:

PV = nRT

The ideal gas law is:

PV = nRT

where,

P = Pressure

V = Volume

R = Gas constant

T =Temperature

n = moles

Given:

Moles in container = 1.95

Temperture = 294.85 K

Pressure = 3.75 atm

Volume =?

Substituting the values:

V = nRT/P

V = 1.95 × 0.082 × 294 / 3.75

Volume = 12.5 L

Now, the condition when changed, such that temperature is 301.25 K, pressure is 0.998 atm, and Volume is 12.5 L, then moles will be equal to:

PV/RT = n

0.998 × 12.5 / 0.082 × 301.25 = n

n = 45830.4 moles

Therefore, 0.521 moles is still present in the container.

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Related Questions

help me please this'll cost me half of my grade

The map shows four bodies of water. The graph shows the area of these bodies of water.

Question 1. Identify the units that should be used for the area of these bodies of water.

Question 2. Use the map to identify which body of water (A, B, C, or D) matches bar 3, and explain your answer.

Question 3. Explain what type of water(fresh or salt) is most likely in these bodies of water.
I'll put a picture of the map and the graph

Answers

Answer:

...

Explanation:

Explanation:

BECAUSE I DONT KNOW AS WELL CAN SOME ONE HELP.

What happens in radioactive decay?

Answers

Answer:

When it decays, a radionuclide transforms into a different atom - a decay product. The atoms keep transforming to new decay products until they reach a stable state and are no longer radioactive. The majority of radionuclides only decay once before becoming stable.

How many grams of nicl2∙6h2o will be used to prepare a 0. 0350 m, 500. 0 ml of nicl2 solution?

Answers

The mass of NiCl₂•6HO₂ needed to prepare a 0.035 M 500 mL solution of NiCl₂•6HO₂ is 4.165 g

What is molarity?

This is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

How to determine the mole of NiCl₂•6HO₂Molarity = 0.035 MVolume = 500 mL = 500 / 1000 = 0.5 L Mole of NiCl₂•6HO₂ =?

Mole = Molarity × Volume

Mole of NiCl₂•6HO₂ = 0.035 × 0.5

Mole of NiCl₂•6HO₂ = 0.0175 mole

How to determine the mass of NiCl₂•6HO₂Mole of NiCl₂•6HO₂ = 0.0175 moleMolar mass of NiCl₂•6HO₂ = 238 g/mol Mass of NiCl₂•6HO₂ =?

Mass = mole × molar mass

Mass of NiCl₂•6HO₂ = 0.0175 × 238

Mass of NiCl₂•6HO₂ = 4.165 g

Thus, 4.165 g of NiCl₂•6HO₂ is needed to prepare the solution

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The grams of NiCl₂.6H₂O will be used to prepare a 0.0350M, 500ml of NiCl₂ solution is 2.268 grams.

How do we calculate grams from moles?

Mass in grams of any substance will be calculated by using moles as:

n = W/M, where

W = given mass

M = molar mass

Moles from molarity will be calculated by using the below formula:

M = n/V, where

M = molarity of NiCl₂ solution = 0.0350M

V = volume of solution = 500mL = 0.5L

On putting values, we get

n = (0.035)(0.5) = 0.0175 mol

Now we convert these moles into grams by using the first formula as:
W = (0.0175mol)(129.6g/mol) = 2.268g

Hence required mass of NiCl₂.6H₂O is 2.268g.

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What does the abreviation asa stand for chemically?.

Answers

Answer:

Acrylonitrile Styrene Acrylate

Explain why air resistance is a contact force and gravity is a non-contact force.

Answers

Answer:

The air resistance is a special type of frictional force that acts upon objects as they travel through the air. The force of air resistance is often observed to oppose the motion of an object. This force will frequently be neglected due to its negligible magnitude (and due to the fact that it is mathematically difficult to predict its value). It is most noticeable for objects that travel at high speeds (e.g., a skydiver or a downhill skier) or for objects with large surface areas. Air resistance is a contact force.

The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. By definition, this is the weight of the object. All objects upon earth experience a force of gravity that is directed "downward" towards the center of the earth. Gravitational force is considered to be a non-contact force because it is an attracting force which does not include contact between the objects to exert force

Answer this question

Answers

Answer:

1.312788 atm

Explanation:

How many grams of O2 are made if 2.90 moles of potassium chlorate react based on the same unbalanced equation below

Answers

Answer: 139.2 g

Explanation:

2.9 mol KClO3 (3 mol O2 / 2 mol KClO3) (32 g / 1 mol O2) = 139.2 grams :)

If you dispense 40 ml of hexane, but it turns out you only need 5 ml, what should you do with the remainder?

Answers

After subtracting the volume needed from the volume dispensed, we got a remainder of 35ml

Subtraction of Numbers

Given Data

Volume of Hexane dispensed = 40mlVolume needed = 5 ml

Let us compute the amount of excess hexane/ the volume that will remain

Remainder = The difference in volume dispensed and the volume needed

Remainder = 40-5

Remainder = 35 ml

The remainder is 35ml

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If you dispense 40 ml of hexane, but it turns out you only need 5 ml, then we should have 35 mL of remained hexane.

How would we calculate the remaining volume?

Remaining volume of any liquid will be calucted as:

Remaining Volume = Total volume - Used volume

Given that, total volume of hexane = 40 mL

Used volume of hexane = 5 mL

On putting values in above equation, we get

Remaining volume = 40 - 5 = 35 mL

Hence required value of remaining volume is 3 mL.

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what is fractional distinction​

Answers

Explanation:

which one of the following a correct way of finding current?

In a triprotic acid, which ka has the highest value?.

Answers

Answer:

The answer is Ka1

▬▬▬▬▬▬▬▬

When it comes to dissociation, Ka1 is fairly the most even-out level, classifying it as a Weak Acid.

What differentiates a weak from a strong acid?

They must be fully separable into ions. If that's the case, you are dealing with a Strong acid.

If this is not the case, that would make the acid Weak.

▬▬▬▬▬▬▬▬

In conclusion, I hope this helps you and I hope you have a great day!

Water is constantly being _____________.

Answers

Answer:

Cycle

Explanation:

Water on the earth is constantly on the move, it recycles over and over again. This movement is called the water cycle. Precipitation occurs when there is so much water in the air it cannot hold onto it anymore. It will rain, snow, sleet or hail. It fills up our lakes, streams and oceans on the surface of the earth.

60 points please help me i will appreciate it!

Answers

Answer:

This is a pretty straightforward example of how an ideal gas law problem looks like.

Your strategy here will be to use the ideal gas law to find the pressure of the gas, but not before making sure that the units given to you match those used by the universal gas constant.

So, the ideal gas law equation looks like this

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

P

V

=

n

R

T

a

a

−−−−−−−−−−−−−−−

Here you have

P

- the pressure of the gas

V

- the volume it occupies

n

- the number of moles of gas

R

- the universal gas constant, usually given as

0.0821

atm

L

mol

K

T

- the absolute temperature of the gas

Take a look at the units given to you for the volume and temperature of the gas and compare them with the ones used in the expression of

R

.

a

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a

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Have

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Liters, L

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Liters, L

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Celsius,

C

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×

Notice that the temperature of the gas must be expressed in Kelvin in order to work, so make sure that you convert it before plugging it into the ideal gas law equation

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

T

[

K

]

=

t

[

C

]

+

273.15

a

a

−−−−−−−−−−−−−−−−−−−−−−−−

Rearrange the ideal gas law equation to solve for

P

P

V

=

n

R

T

P

=

n

R

T

V

Plug in your values to find

P

=

0.325

moles

0.0821

atm

L

mol

K

(

35

+

273.15

)

K

4.08

L

P

=

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

2.0 atm

a

a

−−−−−−−−−−−

The answer is rounded to two sig figs, the number of sig figs you have for the temperature of the gas.

Answer:

[tex]\huge\boxed{\sf P = 1.68 \ atm}[/tex]

Explanation:

Given:

Moles = n = 0.6 mol

Volume = v = 9.13 L

Temperature = T = 38 °C + 273 = 311 K

Gas constant = R = 0.08206 L atm K⁻¹ mol⁻¹

Required:

Pressure = P = ?

Formula:

Pv = nRT

Solution:

Rearranging formula

[tex]\displaystyle P = \frac{nRT}{v} \\\\P = \frac{(0.6)(0.08206)(311)}{9.13} \\\\P = \frac{15.3}{9.13} \\\\P = 1.68 \ atm\\\\\rule[225]{225}{2}[/tex]

Mercury(ii) oxide (hgo) decomposes to form mercury (hg) and oxygen (o2). the balanced chemical equation is shown below. 2hgo right arrow. 2hg o2 the molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2? 3.906 moles 7.813 moles 15.63 moles 73.87 moles

Answers

Decomposition reaction results in the formation of the products by splitting the reactants. Moles of mercury(ii) oxide needed are 15.63 moles.

What are moles?

Moles are the ratio of mass and the molar mass of the compound or the molecule.

Moles of oxygen are calculated as:

[tex]\begin{aligned}\rm n &= \rm \dfrac {mass}{molar\; mass}\\\\&= \dfrac{250}{32}\\\\&= 7.8125 \;\rm moles\end{aligned}[/tex]

The balanced chemical reaction can be shown as,

[tex]\rm 2HgO \rightarrow 2Hg + O_{2}[/tex]

From the reaction, it can be said that 1 mole of oxygen requires 2 moles of mercury oxide.

Moles of mercury oxide are calculated as:

[tex]\begin{aligned} \rm n HgO& = (7.8125 \;\rm moles \; O_{2}) \times (\dfrac{2 \;\rm moles\; HgO}{1 \;\rm mole \; O_{2}})\\\\\rm n HgO &= 15.625 \;\rm moles \end{aligned}[/tex]

Therefore, option C. 15.63 moles of mercury (II) oxide is needed.

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What phase does chloride occur in?

Answers

Answer:

solid

Explanation:

chlorine is liquid

How many moles of oxygen are in 8.25 g of oxygen

Answers

Answer:

0.258 moles of Oxygen.

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

The aldol condensation involves nucleophilic attack of an enolate to a carbonyl. Use the pop-up menus to identify the total number of aldol products that each of the following reactions can produce

Answers

Aldol condensation involves the reaction of an acid or base with a carbonyl group producing a nucleophile that attacks another carbonyl compound  to yield a β-hydroxyaldehyde or β-hydroxyketone compound.

What is aldol condensation?

The aldol condensation is a reaction in organic chemistry in which there is a reaction between an acid or base and a carbonyl group which then serves as the nucleophile that attcks a second carbonyl to yield a β-hydroxyaldehyde or β-hydroxyketone compound.

The aldol condensation may be acid catalysed or base catlysed. The question is incomplete hence the complete mechanimsms can not be decuced.

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A company produces a colorless vinegar that is 5.0% HC2H3O2 in water. Using thymol blue as an indicator, a student titrates a 15.0-milliliter sample of the vinegar with 43.1 milliliters of a 0.30 M NaOH (aq) solution until the acid is neutralized. Identify the negative ion in the NaOH(aq) used in this titration.

Answers

The negative ion in aqueous sodium hydroxide, NaOH(aq) is hydroxide ion, OH-.

What is a neutralization reaction?

A neutralization reaction is a reaction between an acid and a base to form salt and water only.

The reaction between vinegar and NaOH is a neutralization reaction which produces a salt and water only.

NaOH is composed of a positive sodium ion, Na+ and a negative hydroxide ion, OH-

Therefore, the negative ion in the NaOH(aq) used in this titration is hydroxide ion, OH-.

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help ty! I just need help with the third one

Answers

Answer:

D

Explanation:

because if a flea is on a dog that is a parisite to host relashionship

Answer:

for number 3 is D

Explanation:

but i am not 100% sure of that

When a solution of mgcl2 and one of agno3 are mixed, the net ionic equation is:

Answers

When a solution of MgCl₂ and a solution of AgNO₃ are mixed, the net ionic equation obtained is:

2Cl¯(aq) + 2Ag⁺(aq)  —> 2AgCl(s)

What is a chemical equation?

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

How to write the net ionic equation

In solution

MgCl₂(aq) —> Mg²⁺(aq) + 2Cl¯(aq)

AgNO₃(aq) —> Ag⁺(aq) + NO₃¯(aq)

The reaction proceeds as follow

MgCl₂(aq) + AgNO₃(aq) —>

Mg²⁺(aq) + 2Cl¯(aq) + 2Ag⁺(aq) + 2NO₃¯(aq) —> 2AgCl(s) + Mg²⁺(aq) + NO₃¯(aq)

Cancel out the spectator ions (i.e Mg²⁺ and NO₃¯) to obtain the net ionic equation

2Cl¯(aq) + 2Ag⁺(aq)  —> 2AgCl(s)

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When a solution of MgCl₂ and one of AgNO₃ are mixed, the net ionic equation is 2Cl¯(aq) + 2Ag⁺(aq) → 2AgCl(s).

What are net ionic reactions?

Net ionic reactions are those reactions in which each species are written in their respective ions form except the spectator ions.

Given chemical reaction is:

MgCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Mg(NO₃)₂(aq)

Ionic form of the given reaction will be written as

Mg²⁺(aq) + 2Cl¯(aq) + 2Ag⁺(aq) + 2NO₃¯(aq) → 2AgCl(s) + Mg²⁺(aq) + NO₃¯(aq)

Spectator ions are those which are commonly present on both side of the reaction and for this reaction they are Mg²⁺ and NO₃¯. So the net ionic reaction will be:

2Cl¯(aq) + 2Ag⁺(aq) → 2AgCl(s)

Hence required net ionic reaction is 2Cl¯(aq) + 2Ag⁺(aq) → 2AgCl(s).

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How many milliliters of 0. 120 m naoh are required to titrate 50. 0 ml of 0. 0998 m butanoic acid to the equivalence point? the ka of butanoic acid is 1. 5 × 10-5.

Answers

The volume of NaOH required to titrate 50 mL of 0.0998 M butanoic acid to the equivalence point is 41.58 mL

Balanced equation

C₄H₈O₂ + NaOH —> C₄H₇O₂Na + H₂O

From the balanced equation above,

The mole ratio of the acid, C₄H₈O₂ (nA) = 1The mole ratio of the base, NaOH (nB) = 1

From the question given above, the following data were obtained:

Concentration of base, NaOH (Cb) = 0.12 MConcentration of acid, C₄H₈O₂ (Ca) = 0.0998 MVolume of acid, C₄H₈O₂ (Va) = 50 mL Volume of base, NaOH (Vb) =?

CaVa / CbVb = nA / nB

(0.0998 × 50) / (0.12 × Vb) = 1

4.99 / (0.12 × Vb)  = 1

Cross multiply

0.12 × Vb = 4.99

Divide both side by 0.12

Vb = 4.99 / 0.12

Vb = 41.58 mL

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Why isn't this structure possible for an isomer of butanoic acid? Like why does the acid group always be on the end of a molecule?

Answers

It’s just a nomenclature law that the carbonyl group has to be on the end of the chain, so just remember that when drawing it out.

It is not possible for the structure to be an isomer of butanoic acid because it consists of 5 carbon atoms.

What is an isomer of butanoic acid?

An isomer of butanoic acid is a chemical compound with the same molecular formula but a different structural arrangement of its atoms.

Butanoic acid, also known as butyric acid, has the molecular formula C₄H₈O₂. It is a carboxylic acid with a straight-chain arrangement of four carbon atoms.

One isomer of butanoic acid is called isobutyric acid (2-methylpropanoic acid). Isobutyric acid has the same molecular formula C₄H₈O₂, but its carbon atoms are arranged in a branched structure.

So from the given structural formula, it is not possible for the structure to be an isomer of butanoic acid because it consists of 5 carbon atoms.

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Would the ph at the equivalence point be acidic, basic, or neutral for each given titration?.

Answers

Answer:

At the equivalence point, equal amounts of H+ and OH– ions will combine to form H2O, resulting in a pH of 7.0 (neutral). The pH at the equivalence point for this titration will always be 7.0, note that this is true only for titrations of strong acid with strong base.

Explanation:

PLS ANSWER ME QUICK!!

CaO mass is 25 grams
CO2 volume is 144 liters
CaO + CO2 = CaCO3
what is the mass of CaCO3?​

Answers

Answer:

100.09 amu is the answer.

Answer:

45g

Explanation:

first we will find out which is the limiting reactant (hope you know how to find it)

Cao is the limiting reactant

so

we will find the number of moles of cao which is 0.45 mol

as according to the equation cao and caco3 have ratios 1:1 so both will have the same no. of moles

then by multiplying 0.45mol by 100 (mr of caco3) we will get the mass of caco3 which is 45g

The process that breaks down granite into sediment is deposition

True
false​

Answers

True. Is the correct answer


How do acquired characteristics differ from adaptations

Answers

Answer:

acquired traits are traits that organisms develops over a lifetime. adaptation are trait that enhances an organism's ability to survive and reproduce in its environment.

A compound has a molecular weight of 112. 124 atomic mass units and the empirical formula C3H4O. What is the molecular formula of the compound? Use the periodic table to help you. A. C6H8O B. C9H12O3 C. C8H4O2 D. C4H8O2 E. C6H8O2.

Answers

The molecular formula of the compound which has a molecular weight of 112.124 atomic mass units is C₆H₈O₂.

What is molecular formula?

Molecular formula of any compound tells about the composition and numbers of each entities present in that molecule.

Steps involved in the prediction of molecular formula:

First we predict the molar mass of given emperical formula as:

      Molar mass of C₃H₄O = 3(12) + 4(1) + 16 = 56

Now we divide the given mass by the calculated mass of empirical formula:

        112.124/56 = 2

Now we multiply the subscripts of given empirical formula by this whole number and we get:

        Molecular formula = (C₃H₄O)₂ = C₆H₈O₂

Hence correct option is (E).

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Based on the ksp experiment describe a way to soften water by removing calcium ions

Answers

Addition of sodium carbonate is a way to soften water by removing calcium ions

How calcium ions are removed?

Water can be softened by the addition of lime to precipitate the calcium as carbonate. Sodium carbonate is also added to remove the remaining calcium salts and to make the water soft.

So we can conclude that addition of lime or sodium carbonate is a way to soften water by removing calcium ions.

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A process based on ksp experiment to soften the water by removing calcium ions is by ion exchange resin process in which the calcium ion is substituted by a sodium ion.

What is removing calcium ions from water?

The water containing a large number of calcium ions is called hard water.

Hard water is not suitable to use.

To remove calcium ion or soften the water, there are various methods are used.

They are ion exchange resin, distillation, and sodium hydroxide.

Thus, a process based on ksp experiment to soften the water by removing calcium ions is by ion exchange resin process in which the calcium ion is substituted by a sodium ion.

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Review the map that shows earthquake zones as yellow lines and active volcanoes as red dots. what pattern can you determine about the focation of the volcanoes and the earthquake zones? also explain why the earthquake zones are long lines on the globe. write 3 to 5 sentences. ​

Answers

A map that shows the location of volcanoes is called a Geologic Map. This kind of map contains information about the geological history and condition of volcanic sites.

What do Geologic Maps indicate?

Geologic maps indicate the following:

the location of volcanosage of rock deposits found near the volcanowhich volcanoes are active and those that aren'ttypes of rocks at these sitesfaults fracture etc.

Note that the map specific to the question is unavailable hence the general response.

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Young fronds are called____
because of how they are coiled

Answers

Answer:

Fiddlehead

Explanation:

Young fronds are called Fiddleheads

because of how they are coiled

Answer:

Fiddleheads or koru

Explanation:

The coiled, immature leaves are called fiddleheads. Young fronds, called fiddleheads because of their striking resemblance to the head of a violin, start out tightly curled at the base of the root. New, or young fronds are produced from the rhizome. They are tightly coiled into a spiral (called a fiddlehead or koru), and these slowly uncoil as they mature.

What is the molarity of 20g of KNO, in 250 mL of water?

Answers

Answer:

should be 2M

Explanation:

:)

Other Questions
What is origin? Write down the coordinates of origin. Describe sophia adeline Which sentence is punctuated correctly?Thunder is good, said Mark Twain, But it is lightning that does the work.Thunder is good, said Mark Twain, but it is lightning that does the work.Thunder is good said Mark Twain, but it is lightning that does the work.Thunder is good, said Mark Twain, but it is lightning that does the work. Is it necessary to have a subject in creating a masterpiece? How do I right 62% as a decimal Read the excerptWhich choice best explains the effect of the author'suse of a faulty analogy on the overall argument?Kale is one of the most nutritious vegetables on Earth.However, its bitter taste and time-consumingprocessing prevented it from becoming a popular snackfood until the kale chip was invented. Kale chips arejust as nutritious as raw kale but are ready to eat andtastier. Their convenience and trendy marketing havemade them one of the best-selling snack foods. Asimilar approach will easily work with any vegetable,thus making beets the guaranteed next wave innutritious snackingO The comparison of kale and beets weakens theclaim that kale is a delicious and nutritious snackO The exaggerated excitement about kale discouragesthe audience from accepting the claims made aboutbeets.O The unsubstantiated connection between kale andbeets weakens the credibility of the rest of theargumentO The reasoning distracts from the strong evidence inthe argument that kale's popularity is well deserved.APITS C!!!! A huge Ping-Pong tournament is held in Beijing with 65,536 participants at the start of the tournament. Each round ofthe tournament eliminates half the participants.a.If p(r) represents the number of participants remaining after r rounds of play, write a formula to model thenumber of participants remaining. Sharlotta's favorite candy is pixie sticks. A packet of 6 pixie sticks cost $ .42. How many packets of pixie sticks can Sharlotta buy for $13.02 Dion bought 3 pounds of oranges and 2 pounds of grapefruit . Write an expression to represent the amount of money Dion spent on fruit. Then evaluate the expression. How much did Dion Spend?Fruit Prices: Lemons : $0.79 Oranges : $ 0.99 Limes : $ 1.09 Grapefruit : $ 1.59 6. Define money supply ? ________ can contain stacked images, text, and other elements which collectively comprise a Photoshop file. What important role does water play in the function that needs to be performed by the kidneys What necessarily happens when a photographer chooses to give either the aperture or the shutter speedpriority?-The other of the two settings is automatically selected.-The other of the two settings stays as previously selected.-The other of the two settings is overridden.-The other of the two settings is ignored six hundred kilograms of tea were packed in 500 g packets. how many packets of tea were there? As a block falls through the air by 40 meter it does work equal to -1800 joule. Determine the mass of a block. do you like lauge arts it is supper fun in cool Why was Woodstock a landmark event of the counterculture? write one paragraph (75 to 125 words in length) that describes how your understanding of Egyptian history has changed. How has and how will the due process clause change(d) America? Chapter 1 TestWhat is the simplified form of the expression 3 + 8x - 2y - x + 1 + 4y? Enter your answers in the boxes.X +ly+