Robert S.

The temperature of a sample of fluorine gas is changed without changing its volume, causing a change in pressure from 114.6 kPa to 133.9 kPa. If the starting temperature was 210 °C, what is the... more

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Chemistry

03/19/21

chemistry question help

A 54.9 L sample of nitrogen gas experiences a change in pressure from 87.0 kPa to 149.7 kPa. What is the resulting volume in liters if the temperature changes from 27oC to 59oC?

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Math Calculus Chemistry

03/19/21

In which equation is the value of y the same as in the equation 19y =95

In which equation is the value of y the same as in the equation 19y =95a.y + 10 = 20b.y/10 = 2c.y - 2 = 3d.y + 5 = 19

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Chemistry

03/18/21

Which ions are most abundant in water?

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Calculus Chemistry Precalculus

03/18/21

Use a system of equations to solve the following problem

A private jet flies the same distance in 4 hours that a commercial jet flies in 3 hours. If the speed of the commercial jet was 168 mph less than 2 times the speed of the private jet, find the... more

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Math Algebra 1

03/18/21

Math question need help!

Mr. Burke is getting married. He wants to rent a catering hall to hold his wedding reception. 21’s Catering Company charges a booking fee of $525 and then $50 per guest. Future’s Hall charges a... more

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Math Algebra 1

03/18/21

need an answer on this question been struggling

Steph Curry is contemplating whether to stay with “Under Armor” or to launch a new sneaker brand called, “The Bibliography”. His current contract with Under Armor is u(d) = 1200d + 9000. IF he... more

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Chemistry

03/17/21

For the reaction ? C6H6 + ? O2 → ? CO2+? H2O , what is the maximum amount of CO2 which could be formed from 11.43 g of C6H6 and 5.93 g of O2? Answer in units of mol.

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Precalculus

03/17/21

pre calculus math

If f(x) is a linear function, f(−4)=5, and f(3)=0, find an equation for f(x)f(x) =

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Precalculus

03/17/21

pre calculus college

A town's population has been growing linearly. In 2003 the population was 38,000. The population has been growing by 1200 people each year.Write an equation for the population, P, x years after... more

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Chemistry

03/17/21

Given: P1: 4.2162 atm, P2: 5.7166 atm, V2: 53.914L, T1: 681.53K, T2: 891.28K , Wanted: liters of CH4

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Chemistry

03/17/21

Use the following reaction: 3Ca(OH)2 + 2H3PO4→ Ca3(PO4)2 + 3H2O How many grams of H2O will be produced if 111.5 grams of Ca(OH)2 are reacted with excess H3PO4?

show all work please! i need it in order to get credit

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Chemistry

03/17/21

If you know 10 moles of C4H10 undergoes combustion with excess oxygen, what’s the maximum amount of carbon dioxide that will be produced?

Make sure you show your work to get credit, including the balanced reaction.

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Geometry

03/16/21

If their combined annual salaries amount to $145,500, what is the annual salary (in dollars) of each?

The salaries of a secretary, a salesperson, and a vice president for a retail sales company are in the ratio 2 : 3 : 5. If their combined annual salaries amount to $145,500, what is the annual... more

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Algebra 2 Trigonometry

03/16/21

NEED HELP SOON!

The pH scale for acidity is defined by pH=−log10[H+] where [H+]is the concentration of hydrogen ions measured in moles per liter (M).A solution has a pH of 6.35.Calculate the concentration of... more

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American History

03/16/21

If quantity demanded increases, the quantity of supplies and price decrease. True False

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Chemistry

03/16/21

chemistry question help

How many psi are present if the number of mm Hg is 674?

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Chemistry

03/16/21

chemistry question help

How many Torr are present if the number of atmospheres is 0.935?

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Chemistry

03/16/21

Gas Laws Chemistry

The temperature of a sample of fluorine gas is changed without changing its volume, causing a change in pressure from 72.5 kPa to 92.7 kPa. If the starting temperature was 30 degrees C, what is the... more

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Chemistry

03/16/21

Use the following reaction: H2SO4 + 2NaOH -> 2H2O + Na2SO4 How many grams of water are produced if 2.0 moles of sodium sulfate are produced?

show all work please!! i need to show all work in order to get credit

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Algebra 1

03/16/21

if a1 = 4 and an = (an -1) ^2 - 1 then find the value of a4

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Calculus Finance Calc

03/16/21

Q10.4: The rate of change of pressure at the end of 20 years is _______ mm/year. (Type an integer or decimal rounded to the nearest hundredth as needed.)

A research group using hospital records developed an approximate mathematical model relating systolic blood pressure and age.P(x)=50+25ln(x+3) 0≤x≤65P(x) is pressure measured in millimeters of... more

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If you needed to produce 33.0 g of NH3, how many grams of H2 would you need? (Stoichiometry)

help please Use the following reaction: Zn + 2HCl -> ZnCl2 + H2

A sample of C2H6 in a rigid container has its temperature changed from 455.07 K to 223 K. If its new pressure is 813.95 kPa, what was its initial pressure in kilopascals?

chemistry question help

chemistry question help

In which equation is the value of y the same as in the equation 19y =95

Which ions are most abundant in water?

Use a system of equations to solve the following problem

Math question need help!

need an answer on this question been struggling

For the reaction ? C6H6 + ? O2 → ? CO2+? H2O , what is the maximum amount of CO2 which could be formed from 11.43 g of C6H6 and 5.93 g of O2? Answer in units of mol.

pre calculus math

pre calculus college

Given: P1: 4.2162 atm, P2: 5.7166 atm, V2: 53.914L, T1: 681.53K, T2: 891.28K , Wanted: liters of CH4

Use the following reaction: 3Ca(OH)2 + 2H3PO4→ Ca3(PO4)2 + 3H2O How many grams of H2O will be produced if 111.5 grams of Ca(OH)2 are reacted with excess H3PO4?

If you know 10 moles of C4H10 undergoes combustion with excess oxygen, what’s the maximum amount of carbon dioxide that will be produced?

If their combined annual salaries amount to $145,500, what is the annual salary (in dollars) of each?

NEED HELP SOON!

If quantity demanded increases, the quantity of supplies and price decrease. True False

chemistry question help

chemistry question help

Gas Laws Chemistry

Use the following reaction: H2SO4 + 2NaOH -> 2H2O + Na2SO4 How many grams of water are produced if 2.0 moles of sodium sulfate are produced?

if a1 = 4 and an = (an -1) ^2 - 1 then find the value of a4

Q10.4: The rate of change of pressure at the end of 20 years is _______ mm/year. (Type an integer or decimal rounded to the nearest hundredth as needed.)

Still looking for help? Get the right answer, fast.

OR

Robert S.

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Emmersion

If you needed to produce 33.0 g of NH3, how many grams of H2 would you need? (Stoichiometry)

help please Use the following reaction: Zn + 2HCl -> ZnCl2 + H2

A sample of C2H6 in a rigid container has its temperature changed from 455.07 K to 223 K. If its new pressure is 813.95 kPa, what was its initial pressure in kilopascals?

chemistry question help

chemistry question help

In which equation is the value of y the same as in the equation 19y =95

Which ions are most abundant in water?

Use a system of equations to solve the following problem

Math question need help!

need an answer on this question been struggling

For the reaction ? C6H6 + ? O2 → ? CO2+? H2O , what is the maximum amount of CO2 which could be formed from 11.43 g of C6H6 and 5.93 g of O2? Answer in units of mol.

pre calculus math

pre calculus college

Given: P1: 4.2162 atm, P2: 5.7166 atm, V2: 53.914L, T1: 681.53K, T2: 891.28K , Wanted: liters of CH4

Use the following reaction: 3Ca(OH)2 + 2H3PO4→ Ca3(PO4)2 + 3H2O How many grams of H2O will be produced if 111.5 grams of Ca(OH)2 are reacted with excess H3PO4?

If you know 10 moles of C4H10 undergoes combustion with excess oxygen, what’s the maximum amount of carbon dioxide that will be produced?

If their combined annual salaries amount to $145,500, what is the annual salary (in dollars) of each?

NEED HELP SOON!

If quantity demanded increases, the quantity of supplies and price decrease. True False

chemistry question help

chemistry question help

Gas Laws Chemistry

Use the following reaction: H2SO4 + 2NaOH -> 2H2O + Na2SO4 How many grams of water are produced if 2.0 moles of sodium sulfate are produced?

if a1 = 4 and an = (an -1) ^2 - 1 then find the value of a4

Q10.4: The rate of change of pressure at the end of 20 years is _______ ​mm/year. ​(Type an integer or decimal rounded to the nearest hundredth as​ needed.)

Still looking for help? Get the right answer, fast.

OR

Robert S.

Q10.4: The rate of change of pressure at the end of 20 years is _______ mm/year. (Type an integer or decimal rounded to the nearest hundredth as needed.)