# How many moles are there in a 30 cm diameter basketball at a pressure of 160 kpa and temperature of 25 degree celcius

22,676 questions, page 64
1. ## physics

A sample of monatomic gas (£^ = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. ¢XC, 6.00 litres, and 5.00 kPa, respectively, to a final volume of 7.00 litres. (a) What is the final pressure of the gas? (b) How

asked by sarah on April 30, 2010
2. ## Chemistry

A mixture containing CH3OH, HF, CH3F, and H2O, all at an initial partial pressure of 1.04 atm, is allowed to achieve equilibrium according to the equation below. At equilibrium, the partial pressure of H2O is observed to have increased by 0.43 atm.

asked by Colin on March 9, 2011
3. ## Chemistry

Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure (in torr) of a solution made from dissolving 16.6 g of biphenyl in 26.0 g of

asked by Ocean on January 23, 2013
4. ## Fluid Mechanics

Find the water pressure at ground level to supply water to the third floor of a building 8.00 m high with a pressure of 325 kPa at the third level So the given is h=8.00 Ptop=325kPa Density water = 1000 Would I need to set it up like 325+1000*9.81*8.00

asked by Ben on October 28, 2014
5. ## chem. Combined Gas laws

A gas takes up a volume of 17 liters, has a pressure of 2.3 atm, and a temperature of 299K. If I raise the temperature to 350K and lower the pressure to 1.5 atm, what is the new volume of the gas? Use the combined gas law here. I will be happy to critique

asked by sam on April 16, 2007
6. ## Chemistry

At 20.0 degrees celcius, a student collects H2 gas in a gas collecting tube. The barometric pressure is 755.2mm Hg and the water levels inside and outside the tube are exactly equal. What is the total gas pressure in the gas collecting tube?

asked by April on February 18, 2013
7. ## chemistry

A sample of gas with a volume of 2.0 L exerts a pressure of 1.0 atm. If the volume is changed to 1.0 L (at constant temperature), what is the pressure? a. 0.5 atm b. 1.0 atm c. 2.0 atm d. 4.0 atm

asked by anonymous on December 11, 2011
8. ## chemistry

5.34g of salt of formula M2SO4 (M is a metal)were dissolved in water. The sulfate ion was precipitated by adding excess barium chloride solution when 4.66g of barium sulfate (BaSO4) were obtained. a)How many moles of sulfate ion were precipitated as barium

asked by Ben on October 19, 2013
9. ## Chemistry

I'm going crazy please help me out part 1 of 2 Determine the mass of anhydrous copper(II) sulfate that must be used to prepare 250 mL of 2.01 M CuSO4(aq). Which i found to be 80.204g part 2 of 2 Determine the mass of CuSO4.5H2O that must be used to prepare

asked by ninzyy on September 5, 2011
10. ## chem

A solution is made by dissolving 27.8 g of nicotine (Molar Mass = 160 g/mol) in 145 g of cyclohexane (C6H12) to form 142 mL of solution. Calculate the mole fraction of the solute and the molarity, respectively, of this solution.

asked by volek on February 20, 2015
11. ## CHEMISTRY

1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for

asked by Anonymous on October 10, 2013
12. ## algebra

dont understand... find the target heart rate for an athlete age a. the chart reads: age target 20 160 21 159 22 158 23 157 24 156

asked by cve on August 27, 2010
13. ## physics

Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor.the floor of friction force of 24N.show that the box accelerates is 4m/s²

asked by Tracelle on April 1, 2014
14. ## math

In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations. Need

asked by Brittany on February 2, 2011
15. ## Physics

An electric lawn mower has a resistance of 160 ohms and draws 15A. What is the cost of operating the lawn mower for 30 minutes if electrical energy costs \$0.12/kWh?

asked by M on June 16, 2014
16. ## Trigonometry

I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you

asked by Shannon on July 27, 2017

In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations. List three of the possible combinations.

asked by stacy on February 3, 2011
18. ## Trigonometry

I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you

asked by Shannon on July 27, 2017
19. ## Math

In a gift wrapping department, a customer can choose from X different papers, Y different ribbons, and Z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations.

asked by Danielle on February 3, 2011
20. ## Chemistry

1. If you had 1.73 moles of hydrogen (H2) and 0.89 moles of oxygen (O2), which would be the limiting reactant? How many moles of water can you produce from your supply of hydrogen and oxygen? My answers: H2 is the limiting reactant because it produces the

asked by Anonymous on October 22, 2015
21. ## Maths

Show that the points (20°N,20°E) and (60°N,160°W) lie on the same great circle.Find their great circle distance apart.

asked by Gbotty on January 11, 2017
22. ## Math

The value of a certain rare stamp is 160% of its value three years ago. If the stamp was worth \$220 then, what is it worth today?

asked by Cecilia on October 26, 2015
23. ## algebra

how do I solve 3/8x+5=25 First subtract 5 from both sides. first you have to subtract 5 from 25 so you will have 3/8x=20 then you have to multiply by the reciprocal so you multiply 20 x 8 and you get 160 divided by 3 and you get 53.3 repeating =x

asked by Anonymous on October 19, 2006
24. ## Science(chemistry)

how much energy is needed to change 53 grams of water from -53 degrees celsius to 160 degrees celsius ?

asked by Mohamed on April 30, 2014
25. ## PHYSICAL CHEMISTRY

COCA-COLA IS CARBONATED BY APPLICATION OF CO2 AT HIGH PRESSURE. CALCULATE THE APPLIED PRESSURE NEEDED TO DISSOLVE 0.144 GRAMS OF CO2 INTO A 591 ML BOTTLE OF COKE. (ASSUME COKE IS SIMPLY H2O, AND THAT SOLUTIONS OF CO2 IN H2O ARE IDEALLY DILUTE.)

asked by BRITNY911 on November 9, 2006
26. ## Earth Science PLZ HELP

Based on what you have discovered, which of the following conditions would lead to the formation of clouds? 1. Moist air moves up as it encounters a mountain range. 2. High pressure is moving into an area. 3. The air over a large parking lot is warmer in

asked by Anonymous on November 1, 2013
27. ## science

A diesel engine's piston compresses 16 cm3 of fuel-air mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature? Note: As long as the units for pressure

asked by jasmine on June 21, 2011
28. ## FSE 120

A compartment measures 3.5 meters by 5.5 meters and is 3 meters high. A fire raises the temperature from 68of to 1500 of. If the starting pressure was 1 atmosphere, what volume is present at the elevated temperature assuming the compartment has openings to

asked by Dave on May 30, 2013
29. ## APChem

"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this salt at 25C (Hint: calculate molarity from the colligative properties eqn of osmotic pressure and use it in the equilibrium

asked by Kiki on March 17, 2010
30. ## Chemistry 20

a) If the pressure and volume of a gas both increase, will the temperature increase or decrease? b) If the pressure is doubled and the volume is tripled, by what factor must the temperature increase or decrease? c) If the pressure of the gas is decreased

asked by R on November 6, 2010
31. ## Physics

what is the mass density of mercury is 13.6g/cm^3. A cylinder of mercury has a diameter of 1 cm and a height of 76cm. what would the height of the cylinder of the water having a diameter of 1 cm and a mass equal to the mass of the mercury cylinder?

asked by Davidameg on September 29, 2014
32. ## Phyisics

what is the mass density of mercury is 13.6g/cm^3. A cylinder of mercury has a diameter of 1 cm and a height of 76cm. what would the height of the cylinder of the water having a diameter of 1 cm and a mass equal to the mass of the mercury cylinder?

asked by Davidameg on September 29, 2014
33. ## CHemistry

The first step of the synthesis is described by the reaction below. When 1.200 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ? grams im not sure what to do. do u convert 1.0M to grams first? by

asked by Jason on April 22, 2007
34. ## Math 9 help

The local theater in Jamie's home town has a maximum capacity of 160 people. Jamie shared with Venus the following graph and said that the shaded region represented all the possible combinations of adult and child tickets that could be sold for one show

asked by Anonymous on December 16, 2013
35. ## Physics

The force exerted by the wind on the sails of a sailboat is Fsail = 440 N north. The water exerts a force of Fkeel = 160 N east. If the boat (including its crew) has a mass of 250 kg, what are the magnitude and direction of its acceleration?

asked by Gregg on February 24, 2012
36. ## math

The bulls-eye on a target has a diameter of 3 inches. The whole target has a diameter of 15 inches. What part of the whole target is the bulls-eye? Explain. THANK YOU!!

asked by Tim on January 12, 2016
37. ## Chemistry

A 5.00-gram sample of glucose, C6H12O6, [molar mass = 180.] is dissolved 10.0 grams of water What is the molality of the glucose solution? Calculate the boiling(BP) and freezing points(FP) of this solution to the nearest 0.1 C°. The vapor pressure of pure

asked by Mark on January 15, 2011
38. ## chemistry

Mixtures of helium and oxygen are used in scuba diving tanks to help prevent ‘the bends’, a condition caused by nitrogen bubbles forming in the bloodstream. If 95 L of oxygen and 25 L of helium at STP are pumped into a scuba tank with a volume of 8.0

asked by alex on March 20, 2013
39. ## science help?

no table and no diagram for this question a)What speed would water have to drop below to deposit a 250μm diameter grain of sediment?......... answer to unit ms^-1 b)What speed would water have to drop below to deposit a 500μm diameter grain of

asked by sam on March 9, 2013
40. ## help ??????????????????

no table and no diagram for this question a)What speed would water have to drop below to deposit a 250μm diameter grain of sediment?......... answer to unit ms^-1 b)What speed would water have to drop below to deposit a 500μm diameter grain of

asked by sam on March 9, 2013
41. ## Precalc

A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and

asked by John on February 10, 2014
42. ## Precalculus

A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and

asked by Heather on September 14, 2015
43. ## CHEMISTRY

I have to make it so the results of the average is less than 25. Average of three volumes: 13+11.3+9.2= 33.5/ 3= 11.16 mL Convert mL to L 11.16 mL x 10^-3 L = .01116 L The number of moles of HCl was calculated using the stoichiometry : 1 mole HCl= ½ moles

asked by LINDA on October 22, 2007

I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the following equation. 2S2O3^2- + I2 -> 2I^- + S4O6^2- So I got 6.6e-3 L*min for the amount of I2 produced. Now I have to calculate

asked by Hannah on February 28, 2012
45. ## Physics

A basketball is thrown horizontally with an initial speed of 4.70m/s . A straight line drawn from the release point to the landing point makes an angle of 30.0 ∘ with the horizontal. What was the release height?

asked by Jenn on October 5, 2014
46. ## statistics

The winning team's score in 11 high school basketball games were recorded. If the sample mean is 9.5 points and sample standard deviation is 0.25 points, what is the 98% confidence interval for the true population mean?

asked by Christi on November 24, 2012
47. ## math

The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.

asked by alicia on April 16, 2016
48. ## Math

A basketball team lost 8 of its 13 games with no ties write the ratio of wins to losses= 5/8 A state sales tax rate is 5% if the tax on a purchase was \$32.45 what was the price of the purchase =\$649

asked by J.M.H on October 20, 2009
49. ## Chemistry

A sealed balloon is filled with 1.20 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 250. torr and the temperature is -27°C. What is the change in volume of the balloon as it ascends from 1.00 atm to

asked by Alice on November 21, 2011
50. ## Chemistry

A sample of argon gas has a volume of 715 mL at a pressure of 1.34 atm and a temperature of 144 Celsius. What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 622 mmHg and 321 K?

asked by Kelly on May 15, 2010
51. ## chemistry

The vapor pressure of ethanol is 54.68 mm Hg at 25oC. How many grams of chlorophyll , C55H72MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 207.6 grams of ethanol to reduce the vapor pressure to 53.60 mm Hg ? ethanol = CH3CH2OH =

asked by jojo on August 26, 2014
52. ## phys

A cylinder in a car engine takes Vi = 4.50 10-2 m3 of air into the chamber at 30° C and at atmospheric pressure. The piston then compresses the air to 0.112 times of the original volume (0.112 Vi) and to 24.0 times the original pressure (24.0 Pi). What is

asked by opp on April 25, 2012
53. ## chemistry

a wet gas collected over water has a volume of 900 mL at50 degrees Celsius and a pressure of 84.6 kPa. The partial pressure of water at this temperature is 12.3 kPa. What is the volume of the dry gas at 120 kPa?

asked by nina on April 6, 2014
54. ## college chem

A balloon is filled with 2.3 cm3 helium gas at 112.1 atm pressure. What will be the new pressure (atm) if the volume is changed to 44.7 cm3? P1V1=P2V2 (112.1)(.0023)=(P2)(.0447) the answer i got was 54.85 so would the answer be 54.85 atm?

asked by kellie on October 17, 2010
55. ## chemistry

A balloon is filled with 2.3 cm3 helium gas at 112.1 atm pressure. What will be the new pressure (atm) if the volume is changed to 44.7 cm3? P1V1=P2V2 (112.1)(.0023)=(P2)(.0447) the answer i got was 54.85 so would the answer be 54.85 atm?

asked by kellie on October 17, 2010
56. ## Chem

A sealed balloon is filled with 1.00 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 299 torr and the temperature is -31°C. What is the change in the volume of the balloon as it ascends from 1.00 atm

asked by Anthony on July 18, 2016
57. ## Physics

A bubble of air, 0.010 m^3 in volume, is formed at the bottom of a lake which is 30.0 m deep and where the temperature is 8.0 C. The bubble rises to the surface, where the water temperature is 26 C and where the pressure is atmospheric pressure. What is

asked by Anonymous on December 11, 2012
58. ## Physics uncertainties

A flat head drill bit is used to drill holes of small depth. The drill bit can drill holes with a diameter size of (40 ± 0.5)mm. The depth of the hole has an uncertainty of ±1mm. If the total percentage uncertainty of the volume made by the hole is less

asked by Izzy on December 16, 2016
59. ## Math(Help, AssignmentDueToday)

Adora has a photo of the Calgary tower that measures 7cm by 19cm. She scans the photo and enlarges it by 160%. By what percentage will the area of the photo increase? A.) 160% B.) 320% C.) 410% D.) 256% A shop sells a small globe that hangs on a keychain,

asked by Candice on June 28, 2016

Adora has a photo of the Calgary tower that measures 7cm by 19cm. She scans the photo and enlarges it by 160%. By what percentage will the area of the photo increase? A.) 160% B.) 320% C.) 410% D.) 256% A shop sells a small globe that hangs on a keychain,

asked by Candice on June 28, 2016
61. ## Calculus 1 Related Rates

Water is discharged from a pipeline at a velocity v(in ft/sec) given by v=1240p^(1/2), where p is the pressure (in psi). I f the water pressure is changing at a rate of 0.406 psi/sec, find the acceleration(dv/dt) of the water when p=33.0 psi. I know the

asked by jahil on November 21, 2010
62. ## trig

At rest, the human heart beats once every second. At the strongest part of the beat, a person's blood pressure peaks at 120mmHg. At the most relaxed part of the beat, a person's blood pressure drops to 80mmHg. Supposing that t = 0 corresponds to the peak

asked by Dave on April 30, 2012
63. ## chemistry

Electrolysis of water produces hydrogen gas and oxygen gas, which can be collected over water: 2H2O(l) → 2H2(g) + O2(g) An electrolysis reaction at 735 mmHg pressure produced 25.00L of gas at 25°C; at which point, the vapor pressure of water is 23.76

asked by Lay on October 13, 2015
64. ## chemistry urgent

hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 °C. what is the pressure of hydrogen gas when the temperature decreases to 20 °C? chemistry - DrBob222, Tuesday, November 30, 2010 at 1:25pm (P1/T1) = (P2/T2) Dear Dr

asked by Lynn on November 30, 2010
65. ## chemistry

Air consits of 21% oxygen, 78% nitrogen and 1% argon by volume. Calculate the partial pressures in Pa if total pressure is 1 atm. My teacher just converted 1atm in pa and then did 21% of that for oxygen etc etc. Can you explain why she did this, is volume

asked by sam on August 11, 2011
66. ## SPORTS

What does these colleges have in common "concerning SEC basketball" ..Samford, Georgia, Marshall, Illinois State, Murray State, Cincinnati, UTC,Kent State, Western Kentucky and Wake Forest and Wisconsin-Milwaukee?

asked by CINDY AGAIN on February 4, 2007
67. ## Chemistry

A solution is prepared using 15.0 mL of 1.0 M HCl and 20.0 mL of 0.5 M HNO3. The final volume of the solution is 1.25 L. What are the [H3O+] and [OH-] in the final solution? What is the pH of the final solution? Ok. I got 0.015 mol HCl and 0.1 mol HNO3. Do

asked by Heather on May 22, 2010
68. ## Physics

Suppose you measure a standing person's blood pressure by placing the cuff on his leg 0.580 m below the heart. Calculate the pressures you would observe if the pressures at the heart are 121 over 80 mm Hg. Assume there is no loss of pressure due to

asked by Kenzie on November 16, 2015
69. ## Chem Problem

I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

asked by Student on March 1, 2013
70. ## Chem Problem

I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

asked by Student on March 1, 2013
71. ## chemistry

A container holds 1.00 mol O2, and the pressure in the container is 2.00 atm. A student adds 60.0 g of gas Y to the container. The total pressure (of O2 and gas Y) is 3.00 atm. What is the molar mass of gas Y? (V and T constant)

asked by Kamila on March 21, 2011
72. ## chem

a sealed cylinder of a gas contains nitrogen gas at 1.00*10^3 kPa pressure and a temperature of 20C. They cylinder is left in the sun and the temperature of the gas increases to 50C. What is the new pressure in the cylinder?

asked by Skye on January 24, 2012
73. ## Physics

A rocket is launched from rest. After 8.0 min, it is 160 Km above the Earth’s surface and is moving at a speed of 7.6 Km/s. Assuming the rocket moves up in a straight line, what are its (a) average velocity and (b) average acceleration?

asked by John on September 13, 2011
74. ## Chemistry

a sample of radioisotope has a count rate measured by a Muller-Geiger counter of 160 counts per minute. this drop to 20 counts per minute in 1 hour. What is the half life of this source.

asked by Victoria on February 4, 2015
75. ## geometry

The diameter of Earth is 12,742 kilometers; the diameter of the moon is 3476 kilometers. a. If you flew around Earth by following the equator at a height of 10 kilometers, how many trips around the Moon could you take in the same amount of time, at the

asked by kim on March 4, 2012
76. ## Chemistry

A 43.0 g sample of hydrated cobalt (II) sulfite is heated to drive off the water. The anhydrous cobalt (II) sulfite has a mass of 26.1 g. Calculate the mass of water. Calculate the moles of water. Calculate the moles of cobalt (II) sulfite. Calculate the

asked by Elizabeth on October 26, 2012
77. ## Physics

1. Which of these physical situations describes an inversely proportional relationship? (Points : 1) The volume always decreases as the pressure increases. The volume always increases as the pressure increases. The pressure vs. volume graph is a straight

asked by Deborah on October 17, 2012
78. ## stats

The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated. mean = 160 range = 60 mode = 165 variance = 324 median = 170 The coefficient of variation equals: a.0.1125% b.11.25% c.203.12% d.0.20312% Do I

asked by Ana on September 15, 2016
79. ## chemistry

Hi, I really need help with my lab report because Im completely stuck. Its about the Ideal Gas behaviour. I am given the mass of Nano2 (0.5044g) the temperature of n2 gas (21.2 C) the temperature of water (21.9 C) the volume of n2 (186.1 ml) and the

asked by Tamara on October 18, 2011
80. ## Chemistry

Given data collected for a liquid. Equilibrium vapor pressure in torr: 4.6, 17.5, 149.4, 525.8 T in *C 0., 20., 60., 90. *Find T in K, Find 1/T in K-1 and 1n VP. *Then make a graph of 1n vapor pressure (1n VP) versus 1/T (where temperature is in units of

asked by Anonymous on July 29, 2008

The ratio of wins to losses for a basketball team is 2:3. Which of the following is a possible total number of games? A. 7 games B. 14 games C. 25 games D. 26 games Can someone show me how to solve this problem please?

asked by STEPHON on November 29, 2014

The ratio of wins to losses for a basketball team is 2:3. Which of the following is a possible total number of games? A. 7 games B. 14 games C. 25 games D. 26 games Can someone show me how to solve this problem please?

asked by Stephon on November 30, 2014
83. ## Algebra

Tingles wants to sell potato chips in cylindrical containers. So the chips do not fall out the containers will have ends. To be environmentally conscious, the company president wants to make the container entirely out of cardboard. Furthermore, they will

asked by Samay on November 27, 2017
84. ## physics

A thin, light string is wrapped around the rim of a 4.00kg solid uniform disk that is 30.0cm in diameter. A person pulls on the string with a constant force of 100N tangent to the disk. Find the linear acceleration of its center of mass. If the disk is

asked by Erin on April 12, 2008
85. ## Chemistry

A is a solution of trioxonitrate (v)acid, HNO3 of unknown concentration.B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution. 25 cm3 portion solution B required an average of 24.00cm3 of solution A for neutralization using 2drops

asked by Ogbaji on June 6, 2018
86. ## Chemistry [sumone help me please :(]

0.250g of phthalic acid is dissolved in 40.00cm^3 of 0.100 mol dm^-3 NaOH. It requires 11.80 cubic centimeters of 0.100 mol\dm^-3 HCL fo neutralisation( to phenolphthalein) The mole ratio in which phthalic acid reacts with sodium hydroxide ihn 1:2 (a)

asked by Petty on September 21, 2011
87. ## Geometry

One pizza has a diameter twice the diameter of a smaller pizza. what is the rato of the area larger pizza to the area of the smaller pizza?

asked by Vanessa on April 19, 2013
88. ## physic

Consider a train that rounds a curve with a radius of 570m at a speed of 160 km/h (approximately 100 mi/h)Calculate the friction force needed on a train passenger of mass 75kg if the track is not banked and the train does not tilt.

asked by mert on July 6, 2013
89. ## stats

A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are

asked by dan on January 23, 2012
90. ## Geometry

1.Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Image is a triangle with one side labeled as the 3 point 6 feet diameter of a semi-circle. The vertex opposite the semi-circle side is bi-sected by a

asked by Money on March 2, 2019
91. ## CHEMISTRY........

i TRIED TO DO IT, BUT MY ANSWERES ARE WRONG. Please show work and explain. 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air

asked by Anonymous on October 10, 2013
92. ## Chem

Nitric acid can be prepared by bubbling dinitrogen pentoxide into water. N2O5(g) + H2O -> 2H+(aq) + 2NO3-(aq) a) How many moles of H+ are obtained when 1.50 L of N2O5 at 25 degrees C and 1.00 atm pressure is bubbled into water? b) The solution obtained in

asked by Dave on January 1, 2007
93. ## AP Bio Lab

the water potential of a solution is equal to the osmotic potential plus the pressure potential. Since there is no differential pressure acting on the solution, the pressure potential is equal to 0 making the water potential equal to the osmotic potential.

asked by Simone on October 2, 2008
94. ## College Chemistry

a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?

asked by Anonymous on October 24, 2011
95. ## chemistry

What is the vapor pressure (in mm Hg) of a solution of 12.5 g of glucose ( C6H12O6) in 75.0 g of methanol (CH3OH) at 27 degrees celcius? The vapor pressure of pure methanol at 27 degrees celcius is 140 mm Hg.

asked by kyle on March 9, 2011
96. ## Calculus

the drop in blood pressure of a typical patient who is given a certain medication is given by F(x)=0.028x^2(19-x) where x is the amount of medication in cubic centimeters. What is the maximum drop in blood pressure for this patient?

asked by Kim on May 1, 2012
97. ## Chem

Knowing what information would allow you to order gas molecules according to their velocity? A. Pressure and temperature B. Volume and molecular mass C. Pressure and volume D. Temperature and molecular mass

asked by Jessie on August 19, 2016
98. ## Gas laws and pressure

An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant, what is the new pressure?

asked by Britani on October 3, 2012
99. ## physics

An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant,what is the new pressure?

asked by victoria on February 16, 2014
100. ## Physics

Explain Why the pressure of a gas in a nitrogen container falls continuously when the gas is continuously taken away while the pressure of a gas in a chlorine container remains constant until nearly all the gas is withdrawn

asked by Joel on August 11, 2016