# 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 126
1. ## physics

assuming a peak flow velocity of 3 m/s determine culvert diameter if peak flow rate will 9790 cubic metres per second

asked by Anonymous on November 12, 2007
2. ## physics

A convex mirror has a focal length of -13 cm. A lightbulb with a diameter of 5.6 cm is placed 60.0 cm in front of the mirror. a. Locate the image of the lightbulb. b. Whats the diamter?

asked by Anonymous on May 20, 2008
3. ## Math

Find the diameter of a circle with a circumfrence of 50 mm. Round your answer to the nearest tenth. A. 16.0mm B. 26.4mm C. 8.4mm D. 33.5mm Is the answer C? Thank you

asked by Callie on January 23, 2015
4. ## Math

A cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round to the nearest hundreth

asked by Tina Clark on May 22, 2012
5. ## math

tree pipes of diameter 1 m are held together by a taut metal band as shown. Find the length in meters, of the metal band.

asked by lia on January 28, 2017
6. ## Physics

A 41.0 cm diameter wheel accelerates uniformly from 86.0 rpm to 342.0 rpm in 3.4 s. How far (in meters) will a point on the edge of the wheel have traveled in this time?

asked by Igor on July 14, 2013
7. ## math

(1)How much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet. (2)The diameter of a frisbee is 12 inches, what is the area of the frisbee

asked by Misty on June 21, 2012
8. ## physics

A small steel ball rolls off a table (1 meter high) with a speed of 2 m/s. Where should they place a can (15 cm high; diameter 10 cm) to catch the ball?

asked by mimi on October 18, 2011
9. ## physics

A pipe carrying 20°C water has a diameter of 3.9 cm. Estimate the maximum flow speed if the flow must be streamline. (The density of water is 1.00 ✕ 10^3 kg/m3.) ans in cm/s

asked by Anonymous on September 9, 2018
10. ## geometry

A cone with a diameter of 7.2 meters and slant height of 8.8 meters is being filled with water at a rate of 2.5 m^3 per minute. How many minutes will it take to fill the cone?

asked by Piggy on April 11, 2012
11. ## Physics

A point source is 1.20m below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water.

asked by Vanessa on April 19, 2017
12. ## math

Metal discs for pet collars have a diameter of 4cm. Each disc is 0.1cm thick. How many discs can be made from 1000cm3 of metal?

asked by Anonymous on October 14, 2010
13. ## Surface areas and volumes

The inner diameter of a circular well is 3.5m .It is 10m deep (a) find the inner curved surface area (b)the cost of plastering the curved surface at the rate of 40/-per m^2

asked by Anonymous on December 2, 2016
14. ## Physics

Find the magnetic flux through a circular loop 6.0 cm in diameter oriented with the loop normal at 50 degrees to a uniform 60 mT magnetic field.

asked by Debra on July 6, 2011
15. ## MATHS

"A DIAMETER OF THE WHEEL OF A CAR IS 84 CM AND THE SPEED OF A CAR IS 72KM/H. THE NO. OF REVOLUTIONS MADE BY THE WHEEL IN 11 MINUTES IS."IS THIS QUESTION EXAMPLE OF CIRCLE OR CYLINDER?

asked by ZAHEER ALI KHAN on November 27, 2016
16. ## Physics

A 41.0 cm diameter wheel accelerates uniformly from 86.0 rpm to 342.0 rpm in 3.4 s. How far (in meters) will a point on the edge of the wheel have traveled in this time?

asked by Igor on July 21, 2013
17. ## physics

a copper wire has a diameter of o.5mm and resistivity of 1.6*10power 6 ohm cm.calculate the length of wire which will be necessary to make 10 ohm coil

asked by kanika on June 16, 2014
18. ## energy

A 9.97kg object slides along the frictionless loop the loop with a diameter of 3 m . what minimum speed must it have at the loop in order to remain in contact with the loop ?

asked by Anonymous on April 27, 2016
19. ## trigonometry

A bicycle wheel has a diameter of 2 feet and turns at the rate of 70 revolutions per minute. How fast does the wheel move in feet per hour?

asked by john rick baluran on January 19, 2015
20. ## math

the diameter of two circles are in the ratio of 2:3. Find the area of the smaller circle if the area of the larger circle is 63pie square meters

asked by Unkown on July 26, 2017
21. ## physics

Water is flowing at 3 m/s in a circular pipe. If the diameter of the pipe decreases to four-ninth its former value, what is the velocity of the water downstream? Answer in units of m/s.

asked by Lines in the Sand122 on November 5, 2008
22. ## Physics

A wheel 32.6 cm in diameter accelerates uniformly from 247 rpm to 378 rpm in 6.54 s. How far will a point on the edge of the wheel have traveled in this time

asked by Anonymous on February 19, 2015
23. ## Maths

a hosepipe feeds water into a tank of height 2m and an internal diameter of 1.6m. Calculate the volume of water in the tank when it is full. Please help as I'm very confused :)

asked by Stoof on April 10, 2016
24. ## math

If a plant manufacturing carpet backing has a cylindrical tank that is 3 meters high and is 6 meters in diameter. What is the volume of the tank? Assume 3.14 for pi.

asked by Anonymous on March 29, 2012
25. ## MATH

The moon's distance from the earth is 360000 km and its diameter subtends an angle of 31 minute at the of the observer on the earth . Find the radius of the moon.

asked by Pankaj on March 5, 2016
26. ## Geography

the diameter of a bicycle wheel is 26 inches.how many feet will the bicycle travel if the wheel turns 20 times??? Is it finding the circumference and multiplying it by 20??

27. ## chemistry

one edge of a cube is measured and found to be 2.162 cm. An atom of copper is 0.2560 nm in diameter. how many atoms of copper are contained in the cube.

asked by kylie on January 21, 2012
28. ## Thermodynamics

The initial state consists of a closed system containing one mole of super-heated liquid water at 115°C and 1 atmosphere pressure. The immediate surroundings are also at 115°C and 1 atmosphere pressure. The change in state is described as this one mole

asked by Becca on February 23, 2013
29. ## chemistry,

in analyzing household bleach. I have a flask that contains 10.00 mL diluted bleach + 0.4g KI + 20 mL distilled water and 20 drops of 2M HCl. To that I titrated 30.60 mL Na2S2O3 and I need to calculate the number of moles of NaOCl reacted. This is what I

asked by amy on April 10, 2007
30. ## physics

a cylinder with movable piston contains 40 moles of an ideal gas it is placed in an ice water bath where it reach thermal equilibrium. it is then compressed slowly with 7500 j of work done to compress it to a smaller volume. how much does its internal

31. ## english

are these thesis good? 1) Cell phones are becoming increasingly popular and are in use almost anywhere one goes. 2) Now a day computers are so valuable and accessible that you can find them almost anywhere such as schools, offices and public places. 3)

asked by elean on March 12, 2017
32. ## Physics

Your teacher tosses a basketball. The ball gets through the hoop (lucky shot). Height of hoop= 3.048m height of person= 2.342 m the ball is thrown at 17 m/s at an angle of 46 degress Part 1: How long does it take the ball to reach its max height? Part 2:

asked by Tina on November 2, 2011
33. ## chemistry

How many grams of ethanol must be added to 500.0 g of water to make a solution that freezes at 0.00 degrees fahrenheit? The molal freezing point depression constant for water is 1.86 degree celsius over moles.

asked by Renee on March 9, 2012
34. ## chemistry

You are titrating an unknown weak acid you hope to identify. Your titrant is a 0.0935 mol/L NaOH solution, and the titration requires 39.9 mL to reach the equivalence point. How many moles of acid were in your sample?

asked by lucy on October 2, 2012
35. ## Chemistry

how mant moles are in 1.30g of (NH4)2SO4? answer in units of mol. today our teacher briefly went over this and doing my homework i totally lost it. and cant remember for the life of me what to do could you please help me and show me step by step what to

asked by Leona on March 18, 2009
36. ## Freezing point

How many moles of each of the following are needed to give the same freezing point lowering as 5.0mol of the nonelectrolyte ethylene glycol in 1 kg of water?CH3−OH, a non electrolyte, KNO3, a strong electrolyte. Im confused on what they are asking, and

asked by Chemistry on April 28, 2015
37. ## Chemistry

How many grams of ethanol must be added to 500.0 g of water to make a solution that freezes at 0.00 degrees fahrenheit? The molal freezing point depression constant for water is 1.86 degree celsius over moles.

asked by Lucy on October 24, 2016
38. ## Chem

You are titrating an unknown weak acid you hope to identify. Your titrant is a 0.0935 mol/L NaOH solution, and the titration requires 22.3 mL to reach the equivalence point. How many moles of acid were in your sample?

asked by Kim on October 3, 2010
39. ## chem

A 2.241 g sample of nickel reacts with oxygen to form 2.852 g of the metal oxide. Calculate the empirical formula of the oxide. Give the number of moles of each element to support you answer.

asked by sam on November 14, 2010
40. ## Chemistry

How many moles of hydrochloric acid (pKa of HF=3.14) must be added to 500.0 mL of 0.30M sodium fluoride (NaF) to give a buffer of pH 3.50? Ignore the volume change due to the addition of hdrofluoric acid

asked by Millie on October 18, 2012
41. ## physics

to what height should a cylindrical vessel of diameter d be filled with a liquid so that due to force on the verticle surface of the vessel be equal to the force on the bottom

asked by ash on December 1, 2015
42. ## physics

a metal wire 1.0 mm in diameter and 2.0 m long hangs vertically with a 5.0 kg mass suspended from it. if the wire stretches 1.2 mm under the tension, what is the value of the young's modulus for metal?

asked by pat on January 10, 2011
43. ## math

How do you calculate the total number cells in a human body given that a cell is 1/1,000 of an inch in diameter and the average human body is 66 inches?

asked by rich on September 10, 2012
44. ## physic

The resistivity of gold is at a temperature of 20°C. A gold wire, 1.8 mm in diameter and 14 cm long, carries a current of 480 ma. The power dissipated in the wire is closest to:

asked by paul on August 4, 2010
45. ## math

Determine whether each statement is true or false. A chord that contains the center of the sphere is a diameter of the sphere. A tangent of a sphere is a line that intersects a sphere in exactly two points.

asked by Jonah on April 26, 2018
46. ## math

If A Bicycle Wheel Has A Diameter Of 27 Inches, Find The Radian Measure Of The Angle Through Which The Wheel Turns As The Bicycle Travels A Distance Of 1 Mile

asked by Anonymous on February 3, 2015
47. ## physics

the resistance of 100.0cm of constantan wire whose diameter of cross-section is 0.55m is 5ohm find the resistivity of constantan wire

asked by matrix school 2 on August 4, 2009
48. ## trig

A wheel with a 24-inch diameter is turning at the rate of 32 revolutions per minute. To the nearest inch per minute, what is the linear velocity of a point on the rim?

asked by helo on July 3, 2013
49. ## physics

A Ferris wheel at an amusement park having a diameter of 14 m completes one rotation in 45 s. (a) What is the rotational speed of this Ferris wheel in revolution per minute and in degrees per second?

asked by anonymous on March 2, 2011
50. ## FLUID MECHANICS

For oil (SG =0.86 and μ = 0.025 Ns/m2) flow of 0.5 m3/s through a round pipe with diameter of 500 mm, determine the Reynolds Number. Determine also whether the flow is laminar or turbulent.

asked by ANNA on May 3, 2014
51. ## Math

The diameter of the planet Saturn is about 75,000 miles. The circumference of the planet can be found using the formula C=3.14d . What is the circumference in scientific notation ? Use 3.14 for ratio

asked by Susy on December 10, 2015
52. ## Math

A certain marine engine has cylinders that are 3.55 inches in diameter and 3.74 inches deep. Find the total volume of 4 cylinders? hard question is there formula

asked by kristine on November 27, 2015
53. ## Math

hi! I need help with this question please help! The question is: Each tire of a bicycle has a diameter of 26 inches. if you start pedaling and the tires make 10 complete rotations, how far has the bicycle traveled? Thanks! :]

asked by Amy on April 25, 2012
54. ## geometry

the diameter of the metal rack represented is 34 cm. To add two support wires (AB and CD) each 8 cm from the center of the rack and perpendicular to the horizontal wires , how many centimeters of wire would you need?

asked by lanae on April 30, 2012
55. ## physical science

What length of German silver wire, diameter 0.050 cm, is needed to make a 28 Ωresistor, if the resistivity of German silver is 2.2 × 〖10〗^(-7) Ω m (show work)

asked by michelle on February 17, 2017
56. ## math

A cylindrical tank with diameter 20in. is half filled with water. How much will the water level rise if a metallic ball of radius 4 in. is placed in the tank?

asked by mary on April 26, 2016
57. ## science

A jogger jogs around a circular track with a diameter of 330 meters in 31 minutes. What was the runner's average speed? What was the runner's average velocity

asked by Anonymous on February 4, 2012
58. ## Maths

the diagram shows a composite solid consisting of cone and a hemisphere.the cone has a height of 10 cm a base diameter of 12 cm .Find volume. Of the whole solid.

asked by Hussan on September 26, 2016
59. ## physics

what is the magnitude of the displacement of a car that travels half a lap along a circle of radius 150m? would the answer be half of the circumference or would it be the diameter of the circle?

asked by Anonymous on October 19, 2008
60. ## physic

If it takes 2.45 min to fill a 24.5 L bucket with water flowing from a garden hose of diameter 2.70 cm, determine the speed at which water is traveling through the hose.

asked by tina on May 2, 2014
61. ## math

A bicycle wheel has a diameter of 65cm paring a journey, the wheel makes 1000 complete revolutions .how many metres does the bicycle travel ,Use the value 3.14 for r.

asked by zainab on November 13, 2018
62. ## Physics

18 mols of gold are shaped like a sphere. What is the sphere’s diameter. Note the atomic mass of gold is 0.197 kg/mol and its density is 19,300 kg/m3.

asked by Anonymous on June 6, 2016
63. ## Math

The manager of the theater wants to sell the popcorn in a cone with a diameter of 7 inches. What does the height of the cone need to be in order to hold the same amount of popcorn as the cylinder?

asked by Alanda on April 30, 2015
64. ## Chemistry 101

Calculate the mass of a cylindrical cork of diameter 1.00 inches and length 2.50 inches. Pay attention to significant figures, Cork density 0.26 g/ mL

asked by Lilly on January 19, 2016
65. ## Math

The diameter of a bicycle’s tires is 2.5 feet. How many revolutions of the tires does it take to travel 1 mild? Use 5280 feet = 1 mile. Round to the nearest tenth.?

asked by Kim on March 15, 2019
66. ## calculus

The strength of a rectangular beam is proportional to width*depth^2. What are the dimensions of the strongest rectangular beam that can be cut out of a 12 inch diameter log?

asked by Susan on December 4, 2010
67. ## algebra

a truck has a diameter of 25 inches. a tack is stuck on the bottom of the tire. if the truck travels one mile, how many times will the tack touch the road?

asked by Anonymous on March 1, 2011
68. ## L PreCal

A typical record album is 12in in diameter and plays at 33 1/3 revolutions per min. What is the angular speed of a record album? Can someone show me how to do this?? I'm so lost!!

asked by Norah on September 9, 2010
69. ## math

I have a math assignment and i am meant to do i backyard design and i have to fit in a fishpond which has an outside diameter of 2.5 and a water depth of 40cm. how should i measure it out into the backyard design?

asked by Joshua on August 7, 2011
70. ## physics

a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high when (a) the force is applied to the center, (b) at the top

asked by peter on October 12, 2012
71. ## Precalc

1. If a bicycle wheel has a diameter of 27 inches, find the radian measure of the angle through which the wheel turns as the bicycle travels a distance of one mile. thanks!!

asked by Rebekah on January 9, 2013
72. ## L PreCal

A typical record album is 12in in diameter and plays at 33 1/3 revolutions per min. What is the angular speed of a record album? Can someone show me how to do this?? I'm so lost!!

asked by Norah on September 9, 2010
73. ## math

the diameter of a soup can is 7cm. the label wraps around the can. about how many centimeters long must the label be to go all the way around the soup can? use 22/7 for pi describe how to mentally check whether your answer is reasonable

asked by jacob on January 4, 2011
74. ## Find the Volume

The diameter of a Sphere is 4.8 cm Use 3.14 and round to the nearest thousandth. A 57.876 cm3 B 463.012 cm3 c 289.382 cm3 d 72.346 cm3

asked by Felicia on June 13, 2010
75. ## precalculus

Find the focus, directrix, and focal diameter of the parabola. 9x + 7y2 = 0 my answers were focus = -9/28,0 fd =9/7 directrix= -9/28 (this ans. is incorrect) what am I missing? pls help

asked by amaa on December 1, 2012
76. ## Math ( Palette of Problem)s)

A cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone round your answer to the nearest hundredth.

asked by Tina Clark on May 21, 2012
77. ## Math

The diameter of a soup can is 7cm. The label wraps around the can. About how many centimeters long must the label be to go all the way around the soup can?(use 22/7 for pi) explain how to mentally check whether your answer is reasonable.

asked by Brittany on February 3, 2016
78. ## Precalc

1. If a bicycle wheel has a diameter of 27 inches, find the radian measure of the angle through which the wheel turns as the bicycle travels a distance of one mile. thanks!!

asked by Rebekah on January 9, 2013
79. ## Math

I have a 2500 gallon horizontal cylindrical tank that is 11 feet long and has a diameter of 6 feet 4 inches. How much liquid is in it when I measure 27 inches of water ?

80. ## Math

Can you help me with this? I did the first part here: The diameter of a tire is 2.5ft. A. find the circumference. (my answer is 7.85) B. how many times will the tire have to rotate to travel 1 mile? (1 mile = 5,280ft) Thank you :)

asked by ShannonPanda on February 16, 2018
81. ## Chemistry

How many glucose molecules does an E coli cell contain if it has an internal glucose concentration of 1.0 mM. The E coli is a cylinder that is 2 micrometers long and 1 micrometer in diameter. Really stuck on this one, thanks for the help!

asked by Janae on September 7, 2009
82. ## Physics

A wheel 31.7 cm in diameter accelerates uniformly from 238 rpm to 347 rpm in 5.9 seconds. How far will a point on the rim of the wheel have travelled in this time?

asked by Emily on April 3, 2014
83. ## math

A spherical helium balloon has a diameter of 30 cm. How much helium is needed to fill the balloon, in cubic centimeters? Round your answer to the nearest centimeter

asked by emerson on November 15, 2016
84. ## Math

A spherical water balloon has a diameter of 10 cm. How much water is needed to fill the balloon, in cubic centimeters? Round your answer to the nearest centimeter. (Use 3.14 for π.)

asked by John on May 19, 2015
85. ## math

a race track is a mile around circle which equals 5,280 circumference. To find the diameter (the the width of the center of the circle) do I divide the 5,280 by 2?

asked by Sandy on March 4, 2013
86. ## physics

steeel and silver wire of the same diameter and same length are stretched with equal tension. what is the fundamental frequency of the silver wire if that of the steel is 200 Hz.

asked by Anonymous on August 16, 2012
87. ## Math

Yan water leaks from a hemispherical bowl of 8 cm diameter at the rate of 10 cm per hour .How fast is the surface falling when the water is 2 cm deep in the bowl

asked by Yan on September 8, 2015
88. ## trigonometry

A wheel with a 15-inch diameter is turning at the rate of 60 revolutions per minute. To the nearest inch per minute, what is the linear speed of a point on the rim?

asked by steve on September 22, 2014
89. ## Physics Electricity and magnetism

Two 10-cm-diameter charged rings face each other, 15.0 cm apart. Both rings are charged to + 30.0 nC . What is the electric field strength at the center of the left ring?

asked by Anonymous on September 15, 2016
90. ## Math

Val Measures the diameter of a ball as 12 inches. How many cubic inches of air does this ball hold, to the nearest tenth? Use 3.14 for Pi

asked by Anonymous on May 2, 2016
91. ## math

A stack of 10 quarters is a cylinder. If the diameter of a single quarter is 2.2 cm and the approximate height is 0.17 cm, what is the surface area of a 10-quarter stack?

asked by supreme on October 9, 2018
92. ## Calculus

A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?

asked by Tiff on November 7, 2010
93. ## math

a bowling ball has a diameter of 8.4 in. It is made of plastic that weighs 0.05lb/in cubed.Find the weight of the bowling ball

asked by christina on August 12, 2011
94. ## Math, geometry

A porch has the shape of a semicircle with a diameter of 7 ft. What is the approximate area of the porch, rounded to the nearest square foot? Use 3.14 to approximate pi. Help!

asked by ♪♫ on March 5, 2015
95. ## calculus

A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?

asked by Bob on November 4, 2010
96. ## math

If a bicycle wheel has a diameter of 63 centimeter. During A journey the wheel make a 510 revolution .how many meter does the bicycle travel

asked by peta on January 29, 2011
97. ## pyhsical science

A wire of uniform cross-section has a resistance of R Ω. What would be the resistance of a similar wire, made of the same material, but twice as long and of twice the diameter?

asked by michelle on February 17, 2017
98. ## math

a cylindrical tank with diameter 2.0m and height 3.2m is to be filled with water. how many litres of water are needed to fill the tank? 100cm3 = 1L

asked by laf on January 13, 2013
99. ## Geometry

A solid is composed of a cube with side length 6 meters and a hemisphere with diameter 6 meters. Find the volume of the solid.

asked by Peter on June 1, 2011
100. ## prealgebra

Caitlin's cylindrical jar holds 525 cubic inches. If the height of the jar is 7 inches what is the approximate diameter?

asked by Anna on March 6, 2014