An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.59 amu. What is the percent abundance of ¹²²X?

Answers

Answer 1

Answer:

[tex]\%_{X-122}=29.5\%[/tex]

Explanation:

Hello!

In this case, since isotopes are atoms of the same element with equal number of protons and electrons but different atomic mass, we can write the equation used to compute the average atomic mass of the considered X:

[tex]m_X^{avr}=\%_{X-120}*120+\%_{X-122}*122[/tex]

However since both percentages compose the 100%, we can write one of those in terms of the other:

[tex]m_X^{avr} = (100\%-\%_{X-122})*120+\%_{X-122}*122[/tex]

Thus, we can solve for the percent abundance of X-122 as shown below:

[tex]120.59 = 120-\%_{X-122}*120+\%_{X-122}*122\\\\120.59-120=\%_{X-122}(122-1200)\\\\120.59-120=\%_{X-122}*2\\\\\%_{X-122}=\frac{0.59}{2}=29.5\%\\[/tex]

Thus the percent abundance of the other isotope would be 70.5 %.

Best regards!


Related Questions

what would you expect in the melting point data if benzoic acid and acetanilide are mixed in equal amount

Answers

Answer:

There will be an increased span of the melting point of acetanilide

Explanation:

if benzoic acid and acetanilide are mixed in equal amounts, there will be an increased span of the melting point of acetanilide than what is known already. This is because the two compounds have mixed together to become a mixture.

. A block of wood has a mass of 150 grams and a volume of 550 cm3. What is its density?

Answers

Answer:

mass= 150 g

volume= 550 cm3

density= mass/ volume

= 150/550

= 0.27 g/cm3

A reaction of 100mL of 1.35 M HCl and 100mL of 1.76 M NaOH is monitored and the following
temperatures were recorded: starting temperature = 24.6 C; and final temperature = 38.8 C.
Calculate the AH of this reaction.

A) -92142
J/Mole
B) -12439.2
J/Mole
C) 876
J/Mole

Answers

Answer:  [tex]\Delta H[/tex] for the reaction is 87935 J

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

[tex]Molarity=\frac{moles}{\text {Volume in L}}[/tex]

[tex]moles of HCl[/tex]=[tex]Molarity\times {\text {Volume in L}}=1.35\times 0.01=0.135moles[/tex]

[tex]moles of NaOH[/tex]= [tex]Molarity\times {\text {Volume in L}}=1.76\times 0.01=0.176moles[/tex]

As 1 mole of HCl neutralizes 1 mole of NaOH

0.135 moles of HCl will neutralize = 0.135 mole of NaOH

Thus HCl is the limiting reagent.

[tex]Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})[/tex]

Q = Heat absorbed by water = ?

m = mass of water = 200 g    (volume of water=200ml, density of wtaer = 1 g/ml)

c = specific heat capacity = [tex]4.18 J/g^0C[/tex]

Initial temperature of water = = 24.6°C

Final temperature of water=  = 38.8 °C

[tex]Q=200\times 4.18\times (38.8-24.6)[/tex]

[tex]Q=11871.2J[/tex]

Thus heat released by 0.135 moles is = -11871.2 J

heat released by 1 mole is =[tex]\frac{-11871.2 J}{0.135}\times 1=-87935J[/tex]

The heat of reaction, ΔH is 87935 J

Molarity and Heat of Reaction ΔHMolarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.The heat of reaction ΔH, is the amount of heat evolved or absorbed when a chemical reaction occurs between molar quantities of the reactants as represented in the equation of reaction.

Equation of reaction between HCl and NaOH is given below:

HCl + NaOH ----> NaCl + H₂O

Molarity = number of mole/volume

Number of moles = molarity * volume

Number of moles of  HCl = 1.35 M * 0.1 L = 0.135 moles

Moles of NaOH = 1.76 M * 0.1 L = 0.176 moles

1 mole of HCl neutralizes 1 mole of NaOH

Therefore, 0.135 moles of HCl will neutralize 0.135 mole of NaOHTherefore, NaOH is in excess and  HCl is the limiting reagent.

Calculating the quantity of heat evolved:

Q = mcΔT

where m is mass, c is specific heat capacity, ΔT is temperature change

Quantity of heat evolved by reaction = Heat absorbed by water

Heat absorbed by water, Q = mcΔT

mass of water = density * volume

density of water = 1 g/mL

volume of water = 200 mL

mass of water = 1 g/mL * 200 mL

mass of water = 200 g

specific heat capacity of water, c = 4.18 J/g°C

ΔT = final temperature of water - initial temperature of water

Initial temperature of water = = 24.6°C

Final temperature of water=  = 38.8 °C

ΔT = 38.8 - 24.6 = 13.7°C

Q = 200 g * 4.18 J/g°C * 14.2°c

Q =  11871.2 J

Therefore, heat released by 0.135 moles is = -11871.2 J

Heat released by 1 mole = 11871.2 * 1/0.135

Heat released by 1 mole = 87935 J

Therefore, the heat of reaction, ΔH is 87935 J

Learn more about heat of reaction at: https://brainly.com/question/18721983

Is strontium phosphide a ionic or covalent bond

Answers

Answer:

Strontium is a soluble earth metal with the nuclear number 38. Phosphate is a polyatomic particle containing phosphorus and oxygen molecules. Strontium loses electrons to turn out to be emphatically charged, and phosphate is an adversely charged particle.

Explanation:

When strontium phosphide comes into contact with water, it transforms into a solid that emits poisonous and combustible fumes. It is a highly reactive substance utilized in the production of chemically reactive devices as well as a laboratory reagent. Strontium phosphide is ionic.

Two elements combine to form an ionic compound. Sr is the metal while P is the non-metal in the ionic combination. After transferring its two valence electrons to P to create the phosphide ion, which has a net negative charge of -3, strontium becomes a cation.

Ions are charged particles that form when an atom (or group of atoms) receives or loses an electron, and ionic compounds are composed of these charged particles.

To know more about ionic compounds, visit;

https://brainly.com/question/13058663

#SPJ6

8.3.2 Test (CST): Chemical Reactions Question 2 of 25 For a certain chemical reaction, the bond energy of the reactants is 68 kJ, and 25 kJ of energy is released. For energy to be conserved, what is the bond energy of the products? O A. 83 kJ O B. 93 kJ C. 43 kJ OD. 33 kJ​

Answers

Answer:

C. 43 kJ

Explanation:

Bond energy (bond enthalpy (H) or bond strength) is the amount of energy required to break a bond. The bond energy is used to determine the strength of a chemical bond.

The bond energy is the difference between the energy of the reactants and the energy of the products. The bond energy is given by:

[tex]\Delta H=\Sigma Bond\ energy\ reactants-\Sigma Bond\ energy\ products\\\\Where \ \Delta H=bond\ energy\ or\ energy\ released\\\\Given\ that\ \Delta H=25\ kJ,\Sigma Bond\ energy\ reactants=68\ kJ, Hence:\\\\\Delta H=\Sigma Bond\ energy\ reactants-\Sigma Bond\ energy\ products\\\\Substituting:\\\\25\ kJ=68\ kJ- \Sigma Bond\ energy\ products\\\\ \Sigma Bond\ energy\ products=68\ kJ-25\ kJ\\\\ \Sigma Bond\ energy\ products=43\ kJ\\[/tex]

Answer: is simply C.

A 20.0 ml sample of glycerol has a mass of 25.2 grams. What is the mass of 63 ml sample of glycerol?

Answers

The mass of 63 ml sample : 79.38 g

Further explanation

Given

20 ml and 25.2 g of glycerol

Required

The mass of 63 ml sample

Solution

Density is the ratio of mass per unit volume

Density formula:

[tex]\large{\boxed {\bold {\rho~=~ \frac {m} {V}}}}[/tex]

Density of glycerol :

= m : V

= 25.2 g : 20 ml

= 1.26 g/ml

Mass of 63 ml sample :

= density x volume

= 1.26 g/ml x 63 ml

= 79.38 g

PLZZZ HELP
The cooling of water vapor enough to return to a liquid state

A Evaporation

B Condensation

C Precipitation

D Transpiration

Answers

The cooling of water vapor enough to return to a liquid state is condensation.

Helppppp
Question 19
The active ingredient in many spices has the empirical formula CsH.O. It's molecular formula could be
Link to Periodic Table of the Elements
o Only C10H1202
Neither C5H.0 nor C10H 1202
Only CsHO
Either C5H.0 or C10H1202

Answers

Answer: Either [tex]C_5H_6O[/tex]  or [tex]C_{10}H_{12}O_2[/tex]

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.  

The empirical formula is [tex]C_5H_6O[/tex]

Now we have to calculate the molecular formula:

[tex]n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}[/tex]

n is a whole number

The molecular formula could be=[tex]1\times C_5H_6O=C_5H_6O[/tex]

Thus molecular formula could be = [tex]2\times C_5H_6O=C_{10}H_{12}O_2[/tex]

I have 4 oribitals and 6 valence electrons
Which element am i?

answer choices
a. Lead (Pb) I’m a metal
b. Selenium (Se) i’m metal
c. Lead (Pb) I’m a nonmetal
d. selenium (Se) I’m a non metal

Answers

Answer:

d. selenium (Se) I’m a non metal

Explanation:

What we know about the element in view is that it has:

              4 orbitals

              6 valence electrons

The orbitals are the energy levels in the element.

Valence electrons are the outermost shell electrons.

The orbitals tells us the periods in which an element belongs. Since we have 4 orbitals, this suggests that our element belongs to the 4th period.

The number of valence electrons tells us the group in which the element could be found. Since we have 6 valence electrons, the group number is 6.

Therefore, the element is period 4 and group 6 is selenium. Selenium is a non-metal.

Pentane (CH3CH2CH2CH2CH3) and neopentane (C(CH3)4 both have the C5H12 formula. Which compound has stronger induced dipole, induced dipole forces

Answers

Answer:

n-Pentane

Explanation:

All molecules possess dispersion forces. It is possible in non-polar molecules that a temporary distortion in the electron distribution of one molecule can affect the electron distribution in a neighboring molecule. This is known as  induced dipole, induced dipole forces.

However, this  induced dipole, induced dipole forces depends on the shape of the molecule. Molecules of n-pentane are capable of better interaction via  induced dipole, induced dipole forces since the molecules interact over the entire length of the molecule rather than neopentane which is more compact and nearly spherical.

What are in the energy levels that surround the nucleus of an atom?

Answers

electrons are the thing in the outer energy levels

What is the mole fraction of ions in solution if the vapor pressure of an aqueous solution of NaCl is 2.02 kPa

Answers

Answer:

.133

Explanation:

Dissolution of solute lowers the vapor pressure of solvent .

Relative lowering by non -volatile solute is equal to mole fraction of solute dissolved .

Vapor pressure of pure water is 2.33 k Pa

Lowering of vapor pressure = 2.33 - 2.02 = .31 k Pa .

relative lowering = .31 / 2.33 = .133

relative lowering will be equal to mole fraction of non volatile solute like NaCl

so mole fraction of NaCl dissolved = .133

What process caused the accumulation of sand that produce the sand dunes?

A. deposition

B. physical weathering

C.

chemical weathering

D.

erosion

Answers

Answer:

Anwser A

Explanation:

Sand dunes are created by wind deposition.

The accumulation of sand that produce the sand dunes is called wind deposition. Therefore, option (A) is correct.

What is the process form sand dunes?

Sand dunes are formed when wind deposits the sand on top of each other. It stays until a small mound starts to form. As the first mound forms, sand builds up on the windward side more and more until the edge of the dune breaks due to its own weight.

When the angle of the dune becomes too big to support the weight,  the collapse of sand dune begins. This is called the angle of repose usually around 30°-34° also depends upon wind speed, grain size, and roundedness of the individual grains.

As these dunes collapse, the sand starts to move in the same direction as the wind. The sand piles up on multiple sides of the dune by changing wind direction and is unable to get the angle of repose such dune never collapses.

Therefore, the sand dunes produce the accumulation of sand through a process called wind deposition.

Learn more about sand dunes, here:

https://brainly.com/question/15268007

#SPJ5

Enter the electron configuration for the ion most likely formed by phosphorus. Express your answer in the order of orbital filling as a string without blank space between orbitals. For example, the electron configuration of Li could be entered as 1s^22s^1 or [He]2s^1.

Answers

Answer:

1s2 2s2 2p6 3s2 3p6

Explanation:

Phosphorus is a non metal. It gains electrons to form ions. The most likely ion formed is the phosphide, where it gains three extra electrons.

Total number of electrons in Phosphide = 15 + 3 =18

The electronic configuration is given as;

1s2 2s2 2p6 3s2 3p6

Electronic Configuration can be defined as the electron distribution of an atom or molecule in an atomic or molecular orbit. The atomic orbit consists of the s, p and d orbitals.

The Atomic number of Phosphorus is 15.

Thus, the Electronic configuration of Phosphorus is 1s² 2s² 2p6 3s² 3p³.

Read more:

What do u mean by electronic configuration? What are basic requirements while writing electronic configuration of an ele...

https://brainly.com/question/21977349?utm_source=android&utm_medium=share&utm_campaign=question

a solution is 5.00% potassium chloride by mass. how much potassium chloride would you expect to collect by evaporating 150.0 g of the solution

Answers

Answer:

When 150.0g of the solution are evaporated, 7.50g of KCl must be collected

Explanation:

A solution 5% of potassium chloride means that there are 5g of KCl per 100g of solution.

When all the solution is evaporated, the solute KCl will be collected as a solid.

In 150g of solution there are:

150g * (5.00gKCl / 100g solution) = 7.50g of KCl are present in 150g of solution.

That means:

When 150.0g of the solution are evaporated, 7.50g of KCl must be collected

What is the wavelength of a 2.99 s -1 wave? (provide work plz)

Answers

Answer:

Explanation:

λ  =  [tex]10^8[/tex]   meters

Explanation:

f : frequency

c :  velocity of light

λ  : wavelength

f  =  c/λ

λ  =  c /f

c  =  2.99  ⋅ [tex]10^8[/tex] m/ s

λ  =  [tex]\frac{2.99 * 10^8}{2.99 s^-^1}[/tex]

λ  =  [tex]10^8[/tex] meters

How many liters of C4H10 are present in 0.25 moles of C4H10 at STP?

Answers

Answer:

V = 5.6 L

Explanation:

Given data:

Number of moles of C₄H₁₀ = 0.25 mol

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Volume of C₄H₁₀ = ?

Solution:

Formula:

PV = nRT

R = general gas constant = 0.0821 atm.L /mol.K

1 atm × V = 0.25 mol ×  0.0821 atm.L /mol.K × 273.15 K

V = 5.6 atm.L/ 1 atm

V = 5.6 L

How many electrons are there in an atom of carbon?​

Answers

Answer:

if its a neutral atom there should be 6 electrons because there are 6 protons

Explanation:

henry moseley showed how the periodic table could be

Answers

Answer: Moseley's experiments in X-ray spectroscopy showed directly from their physics that cobalt and nickel have the different atomic numbers, 27 and 28, and that they are placed in the Periodic Table correctly by Moseley's objective measurements of their atomic numbers.

Explanation:

Which of these describes the role of gelada baboons in their ecosystem?

Answers

Answer:

Gelada baboons plays a significant role.

Explanation:

The role of gelada baboons in their ecosystem is very important because they aerate the soil for plants which is necessary for good plant growth. These gelada baboons also helps in controlling the population of predator in their ecosystem which is very essential for the stability and equilibrium of the ecosystem so gelada baboons has a good effect on both plants and animals in their ecosystem.

Answer: Primary Consumer

Explanation: Gelada Baboons are herbivores, :D



How many moles of Fluorine (F2) are

needed to completely react 8.0

moles of NF3?

Answers

Answer:

12 moles of F₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

N₂ + 3F₂ —> 2NF₃

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Finally, we shall determine the number of mole of F₂ needed to produce 8 moles of NF₃. This can be obtained as illustrated below:

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Therefore, Xmol of F₂ will react to produce 8 moles of NF₃ i.e

Xmol of F₂ = (3 × 8)/2

Xmol of F₂ = 12 moles

Thus, 12 moles of F₂ is needed for the reaction.

As an electron in an atom moves from a higher energy state to a lower energy state, the atom does what?

Answers

Answer: absorbs energy

Explanation:

Answer:

releases energy

Explanation:

write a skeletal equation for the following reaction: An aqueous solution of barium nitrate and an aqueous solution of sodium sulfate are mixed together. Then balance the completed chemical equation.

Answers

Answer:

Ba(NO₃)₂(aq) + Na₂SO₄(aq) ⇒ BaSO₄(s) + 2 NaNO₃(aq)

Explanation:

Let's consider the unbalanced double displacement equation for the reaction of an aqueous solution of barium nitrate and an aqueous solution of sodium sulfate.

Ba(NO₃)₂(aq) + Na₂SO₄(aq) ⇒ BaSO₄(s) + NaNO₃(aq)

To get the balanced equation, we will multiply NaNO₃(aq) by 2.

Ba(NO₃)₂(aq) + Na₂SO₄(aq) ⇒ BaSO₄(s) + 2 NaNO₃(aq)

Calculate the volume of 7.28 g of a metal that has a density of 6.28 g/cm

Answers

Answer:

1.16 cubic centimeters

Explanation:

How many molecules of copper sulfate are needed to produce 5.0×1024 molecules of sodium sulfate?
__NaOH + __CuSO4 à __Na2SO4 + __Cu(OH)2

Answers

Answer:

5.0 × 10²⁴ molecules

Explanation:

Step 1: Write the balanced double displacement reaction

2 NaOH + CuSO₄ ⇒ Na₂SO₄ + Cu(OH)₂

Step 2: Calculate the moles corresponding to 5.0 × 10²⁴ molecules of Na₂SO₄

We will use Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.

5.0 × 10²⁴ molecule × 1 mol/6.02 × 10²³ molecule = 8.3 mol

Step 3: Calculate the moles of CuSO₄ required to produce 8.3 moles of Na₂SO₄

The molar ratio of CuSO₄ to Na₂SO₄ is 1:1. The moles of CuSO₄ required are 1/1 × 8.3 mol = 8.3 mol.

Step 4: Calculate the molecules corresponding to 8.3 moles of CuSO₄

We will use Avogadro's number.

8.3 mol × 6.02 × 10²³ molecule/1 mol = 5.0 × 10²⁴ molecule

What is the pH of a 75.0 mL solution that is 0.045 M in weak base and 0.053 M in the conjugate weak acid

Answers

Answer:

7.07

Explanation:

HA = weak acid = 0.053

A+ = conjugate base = 0.045

Ka = 7.2x10^-8

Ka = [H+][A-]/HA

7 2x10^-8 = [H+][0.045]/0.053

[H+] = 7.2x10^-8 x 0.053/0.045

= 8.48x10^-8

PH = -log[H+]

= -log[8.48x10^-8]

PH = -[login.48 + log10^-8]

PH = -0.928 - (-8)log10

= 7.07

Water only gets evaporated from the ocean. True or false?

Answers

Answer:

×

Explanation:

FALSE BECAUSE NOT OCEAN IT IS ALL

Once the activity of americium in a smoke detector falls below 5 percent of its original activity, it's no longer able to effectively detect smoke and trigger the alarm. If the half-life of americium-241 is approximately 432.2 years, how many years will it take before the americium-241 is unable to detect smoke?

Question 11 options:


A)


10 years


B)


20 years


C)


1,868 years


D)


2 years

Answers

Answer:

C 1,868 years

Explanation:

I just took the test - I tried doing the math and was close but couldn't get it exact; so I guessed and I was correct :)

Answer:

1,868 years

Explanation:

An element crystallizes in a face-centered cubic lattice. If the length of an edge of the unit cell is 0.408 nm, and the density of the element is 19.3 g/cm3 , what is the identity of the element?

Answers

Answer:

Au

Explanation:

For the density of a face-centered cubic:

[tex]Density = \dfrac{4 \times M_w}{N_A \times a^3}[/tex]

where

[tex]M_w[/tex] = molar mass of the compound

[tex]N_A=[/tex] avogadro's constant

[tex]a^3 =[/tex] the volume of a unit cell

Given that:

Density [tex](\rho)[/tex] = 19.30 g/cm³

a = 0.408 nm

a = [tex]0.408 \times 10^{-9} \times 10^{2} \ cm[/tex]

a = [tex]4.08 \times 10^ {-8} \ cm[/tex]

[tex]19.3 = \dfrac{4 \times M_w}{(6.023 \tmes 10^{23})\times (4.08 \times 10^{-8})^3}[/tex]

[tex]M_w= \dfrac{19.3\times (6.023 \times 10^{23})\times (4.08 \times 10^{-8})^3}{4}[/tex]

[tex]M_w=197.37 \ g/mol[/tex]

Thus, the molar mass of 197.37 g/mol element is Gold (Au).

URGENT!!!!!! Please help I will give brainliest

Answers

The first and the third are balanced and the second and last aren’t balanced
Other Questions
While George Washington rode into many towns on his horse, Nelson, current presidents have use of Air Force One.TrueFalse When a particle is moving fast it has a lot of kinetic energy in it. ? Delaney plans to run at least 5 miles each week for her health. Delaney has a circular route in the neighborhood to run. Once around that route is 420 yards. If runs that route times during the week, will cover at least 30 miles? A: No, because 5 miles is (8800) yards and 30 times around the route is ( ) yards.B: Yes, because 5 miles is (8800) yards and 30 times around the route is ( ) yards. Directions: Find the verbs in this story and underline the ones you think are vague (Not clearly stated). Anthony is taking Denise for a ride in his new car. He moves fast down the highway. Suddenly Denise says, Look out! A truck moves into their lane, right in front of them. Anthony puts his foot on the brake-hard. The car goes first to the right, then to the left. Dont use the brake! Denise says. Anthony takes his foot off the brake and gets control of the car. Were safe, Anthony goes to Denise. New paragraph-Rewrite the above paragraph with new, more clearly stated verbs. Factor the following trinomial. If it cannot be factored, indicate "Not Factorable".4x^221x+20 Causes of drug abuse What is the value of x?X = Max hears on the news that a total solar eclipse will be visible from his town in the coming week. Which of the following explains why the total solar eclipse will be visible where Max lives? A. His town will be located within the umbra during the eclipse. B. His town will be located within the penumbra during the eclipse. C. A total solar eclipse is visible from all places on Earth's night side. D. A total solar eclipse is visible from all places on Earth's day side. in the novel Harris and Me, what perspective was it written in, and how does this impact the story Cul es el tema del siguiente prrafo? Encuentra los cognados y las palabras que ya sabes para entender su significado.Hace muchos siglos, Cristbal Coln sali de Espaa para explorar el mundo. Primero vio la isla de Cuba pero Santo Domingo lleg a ser su primera colonia en el Nuevo Mundo.Christopher Columbus' first accomplishments in the New Worldeuropean exploration of the New Worldbuilding the New World describe the effects of cloud cover and particulate matter on the amount of solar radiation received at the earth's surface Complete each sentence below with the correct preterite form of tener.Ellos ____________________ que comprar los billetes.The following sentence is written in Indirect Speech. Rewrite the sentence using Direct Speech.Example: Laura dice que quiere su libro. Answer: Laura dice: Quiero mi libro.Paco dice que quiere un refresco.Write sentences with the preterite tense of hacer to say what Alberto and his family did during their last trip and what the weather was like.mi hermano / hacer la maletaComplete each sentence below with the correct preterite form of tener.l ____________________ que hacer la maleta. ok real quick question how does your teacher give you a D on one of your assignments after they just signed you up for an honor class?an honor class is something that helps with your collage and could raise you up a grade but my teacher goes ahead and gives me a D she must be missing brain cells right she has to be because that is ridiculous Combine the following like terms 8y - y = -21, -18, ____, -12, ____, ____, -3, ____, 3, 6, ____, ____, 15, 18, ____ find the missing numbers Why is India known as a subcontinent?Group of answer choicesIt is protected by mountain ranges.Rivers run through it.It has poor resources.It is located "under" Asia. What is the unit cost per bottle if a pack of 6 bottles of juice sells for $4.80? $0.28 per bottle $28.80 per bottle $0.80 per bottle $8.00 per bottle Can somebody help me out pleaseeee ?? 2 ( r - 1 ) + 3 = 19 The grain is pumped out of a full-grain silo into a barge at a rate of 9 cubic meters per minute. The silo holds 2000 cubic meters of grain. Let y be the cubic meters remaining in the silo after x minutes. Write an equation in slope-intercept form that models the amount of grain in the silo.How would I solve this?