A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.00 gallons, what is the boiling point of the solution?

42,818 results, page 86
1. CHEMISTRY !!! HELP !

Calculate the pH of the solution after the addition of the following amounts of 0.0617 M HNO3 to a 70.0 mL solution of 0.0750 M aziridine. The pKa of aziridinium is 8.04. 1)Volume of HNO3 equal to the equivalence point 2)89.5mL of HNO3 I got pH= 7.37 for 1

asked by Owen on September 26, 2015
2. calculus

Suppose the volume, V , of a spherical tumour with a radius of r = 2 cm uniformly grows at a rate of dV/dt= 0.3 cm^3/day where t is the time in days. At what rate is the surface area of the tumour increasing? The volume of a sphere is given by V =4

asked by Quratulann on November 1, 2014
3. science

how the volume of air in a tank of compressed air would change if the volume of the tank doubled?

asked by John Doswell on November 17, 2015
4. HELP SCIENCE

how the volume of air in a tank of compressed air would change if the volume of the tank doubled?

asked by John Doswell on November 18, 2015
5. Chemistry

a balloon has a volume of 2.0 L at room temperature (27 degrees celsius). at what temperature would the balloon have a volume of 2.0L?

asked by Jake on March 27, 2014
6. Chemistry

A sample of gas at a pressure of 1.5 atm has a volume of 22.4 L. What is the new volume if the pressure is lowered to 0.75 atm?

asked by Noona on May 29, 2014
7. physics

The concept of pressure involves both force and volume. force and area. area and volume

asked by dave on October 7, 2016
8. physical science

What is the density of a suitcase that has a mass of 25 g and a volume of 13 cm3? Formula: Density = Mass/Volume

asked by Anonymous on April 11, 2013
9. Chem

A sample of an ideal gas has a volume of 3.20 L at 14.80 °C and 1.50 atm. What is the volume of the gas at 21.80 °C and 0.989 atm?

asked by Rachel on March 7, 2018
10. Science

What are the surface area, volume, surface area:volume, and distance of diffusion for the following dimensions: 1 cm x 1 cm x 1 cm 2 cm x 2 cm x 2 cm 1 cm x 1 cm x 6 cm

asked by Beth on September 29, 2011
11. CHEMISTRY

The gas sample has a volume of 76.7 μL at 22.1 °C. What is the volume of the gas after the sample is cooled to 9.8 °C at constant pressure?

asked by torri on May 4, 2015
12. Chemistry (Check)

What is the volume of the gas in a balloon at -195 degrees C if the balloon has been filled to a volume of 5.0L at 25 degrees C? Vf = 1.3L

asked by Sarah on November 18, 2015
13. science

sample of gas at 17°C from a volume of 5.68 L and 1.10 atm to a container at 37°C that has a pressure of 1.10 atm. What is the new volume of gas?

asked by Anonymous on December 1, 2011
14. Chem - Im lost

A sample of an ideal gas has a volume of 3.35 L at 14.00 °C and 1.40 atm. What is the volume of the gas at 21.60 °C and 0.993 atm?

asked by Anonymous on July 5, 2012
15. Calculus

Find a such that the volume inside the hemisphere and inside the cylinder one half the volume of the hemisphere

asked by Dummy on March 12, 2013
16. Chem 130

If 2.03 g of helium gas occupies a volume of 12.0 L at 22°C, what volume will 6.19 g of helium gas occupy under the same conditions?

asked by michelle on May 6, 2014
17. chemistry

a balloon has the volume of 90 L at a pressure of 45 kPa. What will the volume be if the pressure increases 135 kPa.

asked by ? on November 4, 2010
18. Physics

Suppose 100 g of water at 20°C is poured over a 70-g cube of ice with a temperature of -8°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the water–ice mixture reaches

asked by James on July 19, 2012
19. Physics

A car has a unibody-type frame and is supported by four suspension springs, each with a force constant of 36100 N/m. The combined mass of the car’s frame and everything inside it (the engine, the seats, the passengers, etc.) is 1270 kg. Because of

asked by Emily on April 8, 2013
20. college chemistry

Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)--> CO2(g). When dry ice is added to warm water, heat from the water causes the dry ice to sublime more quickly. The evaporating

asked by Eddie on November 10, 2009
21. Science

(just a quick science question, pls correct my answer if im wrong..) Which of the following statements is true A.) there is more water on earth now than there was millions of years ago **** B.) there is less water on earth now than there was millions of

asked by io on April 4, 2018
22. science-chemistry

An aqueous solution of ammonium nitrite decomposes when heated to give off nitogen gas and water. This reaction can be used to prepare pure nitrogen gas. How many grams of ammonium nitrite must have reacted if 3.75 liters of nitrogen gas was colleced over

asked by Sean on October 20, 2014
23. AP Chemistry

Microwave ovens emit microwave radiation that is absorbed by water as heat. Suppose that the wavelength of the radiation that is 12.5 cm in an oven that has a power rating of 900 watts. (1W = 1 J/s) a) How many moles of photons are released per minute b)

asked by qwerty123 on November 17, 2010
24. calculus

A trough is 9 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x4 from x=−1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by

asked by Catherine on January 30, 2015
25. Chemistry

Question: A volume of 26.00ml of 4.30 M. HCL is mixed with 33.70 ml of 10.80 M H3PO4 s mixture is diluted to 1.00 liter with distilled water. A 50.00 ml portion of this diluted mixture is than titrated with .2200 M. NaOH. a) compute the concentration of

asked by Eliz on April 19, 2009
26. Physics

A glass flask with a mass ok 3.00kg and volume of 1000 cm3 is completely filled with mercury and is at a temperature of 55.0oC. The flask is then lowered into an ice water bath. After thermal equilibrium is reached, (a) what percentage of the flask will be

asked by Francis on April 24, 2017
27. geometry

One advantage of the prismoidal formula is that you can use it to a) calculate precise volumes of all prismoids b)calculate both volume and surface area c)determine volumes of figures that are not prismoids d)estimate the volume of solids that are

asked by Anonymous on June 14, 2015
28. Calc

Air is being pumped into a spherical balloon so that its volume increases at a rate of 90{cm}^3/s. How fast is the surface area of the balloon increasing when its radius is 7{cm}? Recall that a ball of radius r has volume \displaystyle V={4}/{3}pie r^3 and

asked by Vince on March 16, 2009
29. Physics

A gas is kept at a pressure of 4.00 × 105 Pa and a temperature of 30.0 °C. When the pressure is reduced to 3.00 × 105 Pa and the temperature raised to 40.0 °C, the volume is measured to be 0.45 × 10^−4 m^3. Estimate the original volume of the gas. I

asked by Angel on November 18, 2017
30. math

The volume of metal in a scale model of an mobile phone tower is 54 cm^3. The scale was 1:50. It required 5 ml of paint to give the model one coat. Find the volume of mental in cubic metres would be required to build the tower.

asked by Anonymous on March 9, 2018
31. chemistry

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?

asked by Bob on November 2, 2010
32. Chemistry

I did a simple distillation and a fractional distillation to purify acetone. How do I determine the concentration of acetone? (Instructions say this is not a simple M=mol/L calculation). My guess was to divide the volume of purified acetone by the volume

asked by helllp on October 24, 2012
33. CHEMISTRY

1.A scuba diver's tank contains 0.29 kg of O2 compressed into a volume of 2.3 L. a)Calculate the gas pressure inside the tank when the temperature is 9oC. b)calculate the volume of oxygen if the temperature is 26oC and the pressure is 0.095 atm.

asked by irfan on June 6, 2013
34. Chemistry

As a hot air balloon rises to increasingly higher altitudes describe what happens to the volume of the balloon if at constant pressure? If pressure is constant, and temperature decreases.. PV=nrT Volume is directly proportional to temperature..

asked by Lisa on January 12, 2007
35. Chemistry

Find the pressure of a gas that originally had a volume of 25 L, pressure of 67kPa at a temperature of 100 Kelvin. When the gas was heated to 200 Kelvin, it had a volume of 56L. How many moles would be present if the gas in the above question was an ideal

asked by Kiley on February 7, 2012
36. math

This cube has five cubes along each edge. The faces are covered, but the cube is hollow inside. Can it be divided into two pieces of equal volume? Explain. I am not sure what this question is asking? Does this look right? l x w x h= 5x5x5=125 125/2=62.5

asked by david on April 2, 2008

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?

asked by Billy on November 2, 2010
38. chemistry

A gas has a volume of 590 mL At a temperature of -55.0 degrees celsius. What volume will the gas occupy at 30.0 degrees celsius? show your work. I'm just confused as to how to start this and the steps required. I'm not asking for an answer, but rather some

asked by gina on March 9, 2018
39. Geometry

One advantage of the prismoidal formula is that you can use it to A. determine volumes of figures that aren't prismoids. B. estimate the volume of solids that are combinations of other solids. C. calculate precise volumes of all prismoids. D. calculate

asked by marceline on April 4, 2016
40. Chemistry

If the temperature of a confined gas is doubled at constant pressure, what change is observed? A) The volume of the gas is decreased to 1/4 of its original value. B) The volume of the gas is increased to twice its original value. C) The density of the gas

asked by Allison on March 30, 2010
41. math

trying to verify the volume of a rectanguler prism h=10 inches w=2 and the formula to find the volume is l.w.h not a math genius just trying to make sure i am calculating this correctly to find the lengh we had to divide the width of the prism so 2 inches

asked by meshel on April 20, 2016
42. Physics

The Volume of air in a car tire is 800cm^3 and the pressure is 290kPa. Determine the volume the air would occupy as soon as the tire bursts on a day when the atmospheric pressure is 204kPa. (Assume that the temperature remains constant and assume an ideal

43. Calculus

Air is being pumped into a spherical balloon so that its volume increases at a rate of 80 cm^3 per second. How fast is the surface area of the balloon increasing when its radius is 9cm? * ball of radius r has volume V=(4/3)pi r^3 and surface area S=4pir^2

asked by Susanna on October 25, 2012
44. Physics

The Volume of air in a car tire is 800cm^3 and the pressure is 290kPa. Determine the volume the air would occupy as soon as the tire bursts on a day when the atmospheric pressure is 102kPa. (Assume that the temperature remains constant and assume an ideal

45. Chemistry

Calculate the volume (L) of the solute C4H8O and the volume (mL) of the solvent C2H5OH that should be combined to prepare 5.54 kg of a solution that is 0.608 m. Molar Mass (g/mol) C4H8O 72.12 C2H5OH 46.07 Density (kg/L): C4H8O 0.8892 C2H5OH 0.7893

asked by Jackie on February 15, 2010
46. math

trying to verify the volume of a rectanguler prism h=10 inches w=2 and the formula to find the volume is l.w.h not a math genius just trying to make sure i am calculating this correctly to find the lengh we had to divide the width of the prism so 2 inches

asked by meshel on April 22, 2016
47. Chemistry

1) What Physical properties, other than specific heat, could you use to help identify unknown metals? 2) Why is water an excellent material to use in a calorimeter? Density, color, resistivity (or conductitivy), melting point, crystallization. 2) water is

asked by K. on September 21, 2006
48. chemistry

An aluminum pan of mass 100 grams and at a temperature of 375°C is plunged into a vat of water. a. If the pan and the water end up at 45°C, how much energy did the aluminum pan lose? b. Assuming no energy goes into the environment, how much energy must

asked by victoria on May 26, 2015
49. Chemistry

I am having trouble with this question: A byproduct is chloroform (CHCL3) , a suspected carcinogen produced when HOCL, formed by the reaction of CL2 and water, reacts with dissolved organic matter. If a solution consist of 100 ppb of CHCL3 in drinking

asked by Rose on February 26, 2009
50. Science

Can you tell me the Main Idea(s)? There’s an old saying that oil and water don’t mix. But sometimes they do — especially when a chemical called a surfactant brings the two together. Once blended, oil and water become tough to pull apart. Unless, that

asked by Anonymous on February 26, 2013
51. Pre-Algebra

There are about 3x10^20 gallons of salt water on the earth, while there are about 6x10^18 gallons of fresh water. About how many times the amount of fresh water is the amount of salt water? A. 2 TIMES B. 50 TIMES C. 200 TIMES D. 500 TIMES

asked by Alice on April 17, 2017
52. Chemistry

If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

asked by Jen on February 10, 2012
53. Chemistry

A mixture of gases collected over water at 14C has a total pressure of 1.198 atm and occupies 72 mL. How many grams of water escaped into the vapor phase?

asked by Megan on October 15, 2010
54. geology (science)

identify one type of resource from each subsystem on which people depend? is that... lithospehere- land hydrosphere- water biosphere- living things atmosphere- water

asked by scooby9132002 on February 27, 2009
55. Chemistry

Which of the following products are insoluble in water? a. AgC(2)H(3)0(2) b. MgSO(4) c.Pb(NO3)2 d.Hg(2)CO(3) e.Ca(OH)2 Try looking up the Material Safety Data Sheet for each using google. A useful tip is that all nitrates are soluble in water.

asked by natash on May 18, 2007
56. chemistry

While on vacation, you notice that a substantial lather fails to form as you wash your hands with soap. a. How do you characterize this water? Why? b. How could this water be treated to remedy this situation?

asked by pinky on October 20, 2010
57. Chemistry

A chunk of 0 C ice, mass 145g, is dropped into 75g of water at 62 C. The heat of the fusion of water is 335J/g. What is the result after thermal equlibrium is attained?

asked by Amanda on April 25, 2009
58. biology

_______ is the tendency for the fluids to resist flow.______________ water is more vicious than warmer water, allowing floating organisms to use less energy to keep from sinking.

asked by bob on September 30, 2014
59. Chemistry

Would there be any effect on the amount of precipitate if tap water containing calcium ions is used instead of deionized water to dissove the reactants? Assume that Na2CO3 is present in excess

asked by Chloe on November 9, 2010
60. Chemistry

Water is sprayed on oranges during a frosty night. If an average of 11.8 g of water freezes on each orange how much heat is released. Can you please help me set this problem up. I don know what formula to use? thank you

asked by SS on August 4, 2015

A bottle of water costs $1.50. Explain how you would make a graph of four ordered pairs to model the total cost of the water in terms of the number of bottles. asked by keoni on August 12, 2014 62. Chemistry Which of the following chemical reactions is an example of an endothermic reaction? A. Making ice cubes from liquid water B. Burning a candle C. The evaporation of water D. The combustion of gasoline I think c asked by Morgan on November 23, 2014 63. chemistry need help Clouds form when water vapor in the air collects as liquids water on dust particles in the atmosphere. What physical process takes plcae? asked by chris on April 20, 2009 64. Math A bottle of water costs$1.50. Explain how you would make a graph of four ordered pairs to model the total cost of the water in terms of the number of bottles.

asked by Devon on March 16, 2015
65. CHEM

If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

asked by Akle on February 10, 2012
66. physics

a fire hose hold near the ground shoots water at speed of 6.8 m/s at what angle(s) should the nozzle point in order that the water land 2 dm away why are there two diffent angles?

asked by kit flores on September 6, 2014
67. Chemistry (Gas Laws) I REALLY NEED HELP

A 27.8 liter container is initially evacuated, and then 8.8 grams of water is placed in it. After a time, all the water evaporates, and the temperature is 130.8 degrees C. Find the final pressure.

asked by Christina on May 10, 2011
68. Chemistry

A 5.00g sample of octane is burned in a bomb calorimeter containing 200g of water. How much energy, in cal, is released if the water temperature increases 6.00C

asked by Domi on November 21, 2013
69. microeconomics

among monopoly, oligopoly, monopolistic competition, and perfect competion, how would you classify the markets for each of the following drinks? a. tap water b. bottled water c. cola d. beer

asked by eva on March 16, 2011
70. Physics

A 66.0 kg diver is on a diving board, which is 1.10 m above the water. He falls at a speed of 9.10 m/s. Calculate his kinetic energy as he hits the water. I know KE is 1/2mv^2, but how can I find KE when height is involved?

asked by Jake on March 5, 2008
71. physics

I'm having a hard time answering this question. I don't know what equation to use? I've tried using dy= Viyt + 1/2 gt^2. Water is leaving a hose at 6.8 m/s. If the target is 2 m away horizontally, What angle should the water have initially? thank you :D

72. Chemistry

The heat of vaporization of water at 100C is 40.66 kj/mol find the change in entropy when 5.0 g of water vapor condenses to liquid at 100 C and 1 atm pressure

asked by Kassie on October 5, 2010
73. chemistry

Calculate the heat that must be supplied to a 488 g stainless steel vessel containing 441 g of water to raise its temperature from 38.7◦C to the boiling point of water 100◦C.

asked by kaleb on September 28, 2013
74. floral

which one of the following is a special need of snapdragons? A. a warm, sunny growing spot B. a penny added to the water C. Plenty of water D. Extra flower food I'm stuck between A & C

asked by els on October 2, 2012
75. physics

Calculate the water pressure at the bottom of the 50-m {\rm m}-high water tower shown in the photo. Express your answer to two significant figures and include the appropriate units

asked by Anonymous on April 3, 2014
76. Physics

Water emerges vertically from a hose at ground level and rises to a height of 3.2 m. (a) At what speed does the water emerge from the nozzle? (b) How long is a given drop in the air?

asked by Anonymous on October 25, 2015
77. science

While conducting the experiment to measure the weight of water displaced by the body precaution should be taken to immerse the solid in water without touching the walls or bottom of the container. Why?

asked by seeyue on March 18, 2017
78. chem

A student dissolved 10.5 g of NH4Cl in 40 mL of water. The temperature of the water changed from 22.5oC to 5.1oC. Calculate the enthalpy of hydration of ammonium chloride in J/mol.

asked by anaa on December 12, 2018
79. Chemistry

A 43 sample of water absorbs 302 of heat. If the water was initially at 29.8, what is its final temperature? i been trying to solve this problem all day long, but i just don't understand how to do it. please help me. thanks..

asked by mari on February 5, 2010
80. College Chem I

Based on the types of bonding in the following compunds, explain why you would expect: 1) calcium chloride (CaCl2) to be soluble in water 2) Ethane (CH3CH3) to be insoluble in water

asked by James on May 2, 2011
81. science

Which pair of substances would likely neutralize each other? A) lye and amonia B) vinegar and battery acid C) ammonia and calcium carbonate D) distilled water and rain water

asked by Rebecca on October 22, 2010
82. chem

The standard molar heat of vaporiza- tion for water is 40.79 kJ/mol. How much energy would be required to vaporize 2.54 ×1010 molecules of water? Answer in units of kJ

asked by sammy on March 1, 2012
83. Science

Can someone please help me solve this homework problem for my chemistry class.Thanks A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?

asked by Eliza on September 17, 2012

A bottle of water costs $1.50. Explain how you would make a graph of four ordered pairs to model the total cost of the water in terms of the number of bottles. asked by niki on June 16, 2014 85. Physics A 360 g model rocket is on a cart that is rolling to the right at a speed of 2.5 m/s. The rocket engine, when it is fired, exerts an 8.5 N thrust on the rocket. Your goal is to have the rocket pass through a small horizontal hoop that is 20 m above the asked by Anonymous on October 3, 2015 86. thermodynamics A scuba tank contains 1.5 kg. of air. The air in the tank is initially at 15 degree celcius. The tank is left near an engine exhaust line, and the tank's pressure doubles. Determine the final temperature, change of internal energy, change of enthalpy, and asked by hermie on November 29, 2011 87. Waves a long fishing rod is kept upright .A boat engine causes the rod to vibrate.Mary speculates that the end of the rod moves to and fro 20 times in 1 minute.The amplitude of the vibrtion is 0.15m.Calculate the speed of the vibration at the end of the fishing asked by Sivashen on June 15, 2011 88. Finance/math Reimbursement per screen 66.05 Equip cost/mo 1450.00 technologist cost per Mammography$15.60 tech aid/per $3.10 Variable cost per mamo$15.00 Equip. maintanance/mo. per machine \$916.66 1) what is the monthly patient volume needed per month to cover fixed

asked by Lori on November 4, 2015
89. chemistry

What is th pH of a buffer solution made by dissolving 0.10 mol of formic acid, HCOOH, and 0.10 mol of sodium formate, HCOONa, in 1L of water? What is the molarity of a solution made by dissolving 3.4g of Ba(OH)2 in enough water to make 450mL of solution?

asked by Taylor on November 19, 2009
90. Chem

Some ethylene glycol, HOCH2CH2OH, is added to your car's cooling system along with 4.4 kg of water. If the freezing point of the water-glycol solution is -15.0°C, how many grams of HOCH2CH2OH must have been added? I used the equation: 15 celcius = 1 x

asked by Mark on March 23, 2011
91. physics

A train consists of 40 freight cars, each having a mass of 2.71 × 105 kg. If the engine (which has twice the mass of a freight car) exerts a net force of +1.12 × 105 N, what will be the acceleration of this train?

asked by tyler on August 24, 2012
92. Calculus help!

f(x)=e^x for 0

asked by anonymous on February 27, 2008
93. chem

A very flexible helium-filled balloon is released from the ground into the air at 20. ∘ C . The initial volume of the balloon is 5.00 L , and the pressure is 760. mmHg . The balloon ascends to an altitude of 20 km , where the pressure is 76.0 mmHg and

asked by dakota on March 18, 2015
94. CALC -- integrals!

2. f(x)=e^x for 0

asked by anonymous on February 26, 2008
95. MATH

rying to verify the volume of a rectanguler prism h=10 inches w=2 and the formula to find the volume is l.w.h not a math genius just trying to make sure i am calculating this correctly to find the lengh we had to divide the width of the prism so 2 inches

asked by meshel on April 22, 2016
96. Chemistry

The question has been answered years ago but not how it is solved. I tried the combined gas law. Here is the question: A balloon originally had a volume of 4.39 L at 44 degrees celsius and a pressure of 729 torr. The balloon must be cooled ??? to reduce

asked by Aaron on October 30, 2014
97. Chemical

How i make a graphic about Pressure v/s 1/Volume? Make a table with two colums. Column 1 contains Pressure. Column 2 contains volume. P   1/V ------------------ Then place values of P and 1/V. Then plot those numbers. I can't draw it on the

asked by Geisha on January 30, 2007
98. Science

A gas filled balloon having a volume of 3.0 L at 1.1 atmosphere of pressure and a temperature of 22 C is allowed to rise into the stratosphere where the temperature and pressure are: - 28 C (note the negative sign) and 0.002 atmospheres , respectively.

asked by Emily on November 19, 2010
99. chemistry

a sample consisting 22.7g of a nongasous unstable compound X is placed inside a metal cylinder with a radius of 8Cm and a piston is carefully placed on the surface of the compound so that for all practical purposes the distance between the bottom of the

asked by timmy on April 21, 2008
100. Biology

Respond to this question: "If a plant doesn't have enough water to openits guard cells, how would this affect its rate of transpiration?" In your answer, discuss the following: - the guard cell's role in transpiration - what effect this would have on the

asked by mysterychicken on March 23, 2010