If 150 g of water is heated from 3.0 celieus to 48.0 celieus how many joules of heat are needed

34,255 questions
1. Chemsity

If 150 g of water is heated from 3.0 celieus to 48.0 celieus how many joules of heat are needed

asked by Trent on May 2, 2011

If 150 g of water is heated from 3.0 celieus to 48.0 celieus how many joules of heat are needed

asked by Trent on May 2, 2011
3. chemistry

If 150 g of water are heated from 20.ºC to 30. ºC,the nunber of joules of heat energy absored is

asked by parveen on December 14, 2010
4. chemistry

if 150 grams of water is heated from 20 degrees C to 30 degrees C, the number of joules of heat energy aborbed is?

asked by Anonymous on March 13, 2013
5. physics

What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4.18 J/g°C. 1200 joules 1500 joules 1700 joules 1900 joules 2000 joules

asked by sc on June 22, 2015
6. chemistry

A 37.0 g mass of a metal was heated to 100°C and then plunged into 74 g of water at 24.0°C. The temperature of the resulting mixture became 28.0°C. (a) How many joules did the water absorb? (b) How many joules did the metal lose? (c) What is the heat

asked by Kelsey on April 27, 2014
7. Chemistry

Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many joules is this? Are these steps right? 32.0g x 55*C = 1760 calories = 420.65 Joules

asked by Jack on May 19, 2010
8. Chemistry

A 11.6 g sample of an unknown metal was heated to 100.0 oC and then added to 25.0 g of water at 23.0 degrees Celsius in an insulated calorimeter. At thermal equilibrium, the temperature of the water in the calorimeter was 24.8 degrees Celsius. What is the

asked by Abby on February 19, 2015
9. Physics

Your house has a voltage of 120V. You want to estimate how much energy (in Joules) you use one morning. You wake up at 7am and leave your place at 9 am. The appliances turned on in your kitchen at breakfast time are: •One hot plate: runs for 10 minutes,

asked by physics help on December 13, 2018
10. Chemistry

A home swimming pool contains 145 m3 of water. At the beginning of the swimming season, the water must be heated from 20 to 32°C. How many joules of heat energy must be supplied?

asked by Kales on October 23, 2014
11. Chemistry

A home swimming pool contains 145 m3 of water. At the beginning of the swimming season, the water must be heated from 20 to 32°C. How many joules of heat energy must be supplied?

asked by Kales on October 23, 2014
12. chemistry

a 225.0g sample of an unknown, silver, pure metal was heated to 95.5 degrees Celsius and then put into 150.50g of water at 22.5 degree Celsius. the water was heated by the hot metal to a temp. of 31.4 degree Celsius. what is the specific heat of the metal

asked by brittany on March 15, 2013
13. chemistry

a 225.0 g sample of an unknown, silver, pure metal was heated to 95.5 degrees celsius then put into 150.50 g of water at 22.5 degrees celsius. the water was heated by the hot metal to a temperature of 31.4 degrees celsius. what is the specific heat? what

asked by brittany on March 18, 2013
14. Chemistry

Calculate how much heat 32.0 g of water absorbs when it is heated from 26.0°C to 73.5°C. In joules, and then we have to calculate calories too, how is that done? I was absent. Thanks so much!

asked by Jane on May 25, 2011
15. Chemistry

Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many joules is this?

asked by Jack on May 19, 2010
16. Chemistry

Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many joules is this?

asked by Jack on May 19, 2010
17. Biology

what will the final temperature be of a beaker of water weighing 100g if its initial temperature is 21 ° and is heated using 125 joules in energy?

asked by cake on January 23, 2015
18. chemistry

Liquid water has a specific heat of 4.184 J/g degrees celcius. If 50 grams of water is heated from10 to 55 degrees celcius, what is the heat energy in joules needed to heat this water

asked by kiersten on November 5, 2012
19. chemistry

A small pebble is heated and placed in a foam cup calorimeter containing 25.0 mL of water at 25.0 degrees Celsius.The water reaches a maximum temperature of 26.4 degrees Celsius. How many joules of heat were released by the pebble?

asked by Anonymous on February 5, 2010
20. Physics

A chunk of metal with a mass of 81.1 grams and a specific heat of 153 joules per kilogram·kelvin is heated to 95.7 degrees Celsius and placed in 144 milliliters of water at 19.5 degrees Celsius. What are the final temperatures of the metal and the water?

asked by Matt on December 12, 2013
21. Chemistry

What is the mass of water that can be heated from 39 C to 80 C by the combustion of 150 g of methane. CH4 + 2O2 => CO2 + 2H2O Delta H= -890kJ

asked by Lisa on January 11, 2013
22. chem

1. A 4.61 g sample of one of the substances listed in the table below was heated from 21.3°C to 315.7°C, requiring 190 J to do so. What substance was heated? I got mercury(l) 2. Calculate the energy required in joules and calories to heat 33.9 g of

asked by james on January 27, 2015
23. Chem

can you show how u got the ansr on this question? a small pebble is heated and placed in a foam cup calorimeter containing 25.0mL of water at 25 degrees celsius. the water reaches a maximum temp of 26.4 degrees celsius. how many joules of heat were

asked by Ryan on January 20, 2010
24. physics

GSM networks use microwaves of 20 cm in wavelength. The energy carried by one trillion (1012) photons of this wavelength is closest to ... a. 10^-16 Joules b. 10^-15 Joules c. 10^-14 Joules d. 10^-13 Joules e. 10^-12 Joules

asked by mm. on March 15, 2010
25. Physics

GSM networks use microwaves of 20 cm in wavelength. The energy carried by one trillion (1012) photons of this wavelength is closest to ... a. 10^-16 Joules b. 10^-15 Joules c. 10^-14 Joules d. 10^-13 Joules e. 10^-12 Joules

asked by mm. on March 15, 2010
26. chemistry

If 150.0 g of Zinc at 100.0 C and 250.0g of liquid water at 10.0 C are mixed in an insulated container, what is the final temperature of the mixture? Czn= .39J/g C Cwater= 4.184J/g C Are we looking for the delta T? If we are, how do you find Q (joules)

asked by miyabi on November 30, 2015
27. Chemistry

A piece of aluminum with mass of 5.0 g is immersed in 30.0 g of water. This system is heated electrically from 20.8 to 42.6°C. How many joules of energy are absorbed by the aluminum? (Cpaluminum = 24.4 J/mol-K; 1 mole of aluminum has a mass of 27.0 g)

asked by Kales on October 23, 2014
28. Physics

Mason lifts a box off the ground and places it in a car that is 0.50 meters high. If he applies a force of 8.0 newtons to lift this suitcase, what is the work done? A. 0 joules B. 4.0 joules C. 4.0 × 101 joules D. 4.0 × 102 joules

asked by fredrick on March 13, 2013
29. Physics

the pressure is one atmosphere and determine the heat in joules required to produce 5.03 kg of water vapor at 100.0 °C, starting with (a) 5.03 kg of water at 100.0 °C and (b) 5.03 kg of liquid water at 0.0 °C. for part (a) I used the equation Q=mL and L

asked by Jena on November 17, 2006
30. physics

a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of

asked by Anonymous on July 31, 2012
31. physics

a 200g aluminum container has 500g of water with an initial temperature of 22 degree celsius. The following heated pieces of metal are dropped into water at the same time as follows: 300g piece of aluminum heated at 100 degree celsius; a 50g piece of

asked by Anonymous on July 31, 2012
32. Physics

100-g sample of substance is heated to 100˚C and placed into calorimeter cup containing 150 g of water at 25˚C. The sample raises the temperature of water to 32.1. What is the specific heat of the substance?

asked by John on March 21, 2010
33. physics

An aluminum vessel with a volume capacity of 510 cm3 is filled with water to the brim at 20.0°C. The vessel and contents are heated heated to 49.9°C. During the heating process, will the water spill over the top (in this case the answer would be

asked by Orcun on November 4, 2014
34. physics

An aluminum vessel with a volume capacity of 530 cm3 is filled with water to the brim at 20.0°C. The vessel and contents are heated heated to 42.5°C. During the heating process, will the water spill over the top (in this case the answer would be

asked by mustafa on November 3, 2014
35. chemistry

Can somebody please help me with this question? That'd be great. Thanks! Determine the amount of heat needed in the following: the number of calories to heat 25 grams of water from 22 degrees celcius to 44 degrees celcius. Q= m c deltaTemp =

asked by Pyrgus on October 4, 2006
36. Chemistry

A small candle with a mass of 6.0 g was completely burned. the heat produced heated 100 g of water from 23.0 to 33.0 Celsius if 200 g were heated by the same candle the temperature change of the water would be: I don't understand this question

asked by Anonymous on February 22, 2015
37. Science

You go rock climbing with a pack that weighs 50N and you reach a height of 30m. How much work did you do to lift your pack? A. 80 joules B. 1500 joules C. 20 joules D. 1.67 joules

asked by on March 30, 2016
38. physics

If the specific heat of water = 4190 J/kg /°C and a total of 120g of hot water at 95°C is poured into the calorimeter, resulting in a final equilibrium temperature of 73°C, how many joules of heat are lost by the water? 11061.6 If the specific heat of

asked by Shay on April 1, 2013
39. Chemistry

A 3.68 g sample of solid gold is heated from 24 ºC to 34 ºC. How much energy (in joules and calories) is required? Thank you!

asked by Eddie on March 7, 2014
40. chemistry

how do you convert joules to kilojoules? example: 2240.48 joules 3887.4 joules 13.85 joules

asked by Rebekah on November 15, 2007
41. physics

In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic energy of the ball

asked by juan on December 17, 2014
42. chemistry

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture

asked by jane on February 15, 2012
43. science

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture

asked by jane on February 15, 2012
44. Physics

The kiloton, which is used to measure the energy released in an atomic explosion, is equal to 4.2 ✕ 1012 J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature of 1 kg of

asked by Bona on December 8, 2016
45. Physics

The kiloton, which is used to measure the energy released in an atomic explosion, is equal to 4.2 ✕ 1012 J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature of 1 kg of

asked by Tionna on December 4, 2017
46. physics

The kiloton, which is used to measure the energy released in an atomic explosion, is equal to 4.2 multiplied by 1012 J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature

asked by Kim on April 10, 2013
47. Chemistry

What is the function of water in an experiment where dry hydrogen chloride gas is passed through heated zinc turnings and then the gas produced is bubbled through water and then passed through heated lead (2) oxide

asked by Anonymous on April 25, 2019
48. Science

A 54-kg jogger is running at a rate of 3m/s. What is the kinetic energy of the jogger. A. 18 Joules B. 81 Joules C. 162 Joules D. 243 Joules

asked by Anonymous on October 11, 2018
49. Chemistry

A 2.75 kg block of ice is heated until it completely melts. It is then heated again until it completely changes to water vapor. Is more energy required to melt the ice or to vaporize the liquid water.

asked by Morgan on January 29, 2015
50. chemistry 12

a chemical reaction released 50.0kJ of energy as it heated a sample of water from 17.0 degrees celsius to 75.0 degrees Celsius, what mass of water was heated? I have no clue as to how to do this! can anyone help?

asked by kris on September 4, 2014
51. Physics

What amount of heat is required to raise the temperature of 350 grams of copper to cause a 25°C change? The specific heat of copper is 0.39 J/g°C A. 2500 joules B. 2600 joules C. 3400 joules D. 3900 joules

asked by Fredrick on April 24, 2013
52. Chemistry

You leave 255 grams of water outside at 21.0 C in the sun. After 30.0 minutes the temperature is 35.0 C. A) how many calories of energy was used by the sun to heat the water up? B) how many joules of energy is this? C) How many Joules / second of power did

asked by Vic on September 9, 2015
53. Chem

When 0.0500 moles of HCL is reacted with 0.0500 moles of NaOH in 50.0 mL of water, the temperature of the water increases by 13.7 degrees C. Caclulate the heat for this reaction in terms of joules per mole of HCl. The heat capacity of the system is 209.2

asked by Kyle on October 26, 2008
54. chemistry

A sample of nickel is heated to 95.0°C and placed in a coffee-cup calorimeter. If the 50.0 g of water in the calorimeter is initially 22.3°C and warms to 25.4°C, what mass of nickel was heated? (The specific heat of nickel is 0.444 J/°C g and water is

asked by Morgan on December 10, 2014
55. chem

I got through the first part easily, got -352.9kJ Having trouble with the second part "The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. The source of energy in the heater is shown below. Mg(s) + 2 H2O(l) Mg(OH)2(s) + H2(g)

asked by Anonymous on November 20, 2010
56. chemistry

A sample of nickel is heated to 95.0°C and placed in a coffee-cup calorimeter. If the 50.0 g of water in the calorimeter is initially 22.3°C and warms to 25.4°C, what mass of nickel was heated? (The specific heat of nickel is 0.444 J/°C g and water is

asked by Morgan on December 10, 2014
57. chemistry

Suppose you put 50mL of water in the can instead of 100mL and heated it to 40 degrees instead of 20 degrees. In what ways, if any, would this afect the results of the experiment? What would happen if you used 200mL of water and heated it only 10 degrees?

asked by Dan on October 6, 2010
58. physics

15 joules of work are done by forces other than gravity in taking an object from a position 3 m above the ground to a position 8 m above the ground. What is the change in the gravitational potential energy of the object? o A. It decreases by 5 joules. o B.

asked by roxy on October 22, 2009
59. Chemistry!

Experiment on Which Fuels Provide the Most Heat? Comparison of the Energy Content of Fuels. Suppose you put 50 mL of water in the can instead of 100 mL and heated it 40 degrees instead of 20 degrees. In what ways, if any, would this affect the results of

asked by Megan on October 7, 2010
60. Physics

Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 74 m of copper pipe whose inside radius is 9.10 10-3 m. When the water and

asked by Maggie on April 6, 2008
61. Chem 103

a piece of gold is heated to 100 degrees celsius. A piece of copper is chilled in an ice bath to 0 degrees celsius. Both pieces of metal are placed in a beaker containing 150 g of water at 20 degrees celcius. Will the temperature of the water be greater

asked by Anonymous on April 15, 2013
62. Chemistry

If 22 g of water is heated so that the water temperature rises from 18.1°C to 21.5°C, how many calories have been absorbed by the water? The specific heat of water = 1.00 cal / (g · °C)

asked by Cassie on October 25, 2010
63. Science

I conducted an experiment of the heat of combustion for three alcohol fuels, methyl, propyl and ethyl. The results were: Methyl - mass before was 231.81g temp of water before heating was 15 deg c. temp of water after heating was 40 deg c. mass of methyl

asked by Paul on November 8, 2010
64. chem

.You have an ice cube that is 150 g and is at a temperature of 0°C. You drop the ice into water that is initially at 15ºC and the ice melts. As a result, the water cools of by exactly 1ºC to become 14ºC. How much water was there? In other words, what

asked by chuck on September 12, 2012
65. Chemistry

A 108g piece of unknown metal is heated to 100 degrees C in boiling water. The heated sample of metal is then dropped into 50ml of H20, which is initially at 23.0 degrees C. After a few minutes the temp. of water raises to 37.5 degrees C. What is the

asked by Lesley on May 14, 2011
66. Chemistry

You have 23.0g of water initially at -46°C. How much energy in joules is required to heat the ice to 0°C? c ice = 2.1 J/g°C. I thought joules was calculated by grams*change in temperature*specific heat. The answer I get from 23*46*2.1 is 2221.8, but web

asked by Harrison on March 1, 2015
67. physics

A 0.25 kg cube of iron is heated and its temperature rises from 23.0 C to 45.0 C. How much heat entered the cube in Joules and in Calories?

asked by joe on January 26, 2012
68. physical science

A 150-L water heater is rated at 8 kW .If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10C to 60C?

asked by jake on March 16, 2013
69. phys. science

when most matter is heated it expands right? & doesnt water expand when it is heated? & what is the diff. b/w thermal conductor and thermal insulator? & in which direction will heat spontaneously flow?

asked by leann on May 15, 2008
70. Physics

How long would it take a kettle with a 1kW heating element to heat 1 litre of water? Watts = Joules / second • Mass of 1 litre of water = 1kg • 1 kW = 1 k Joule / second or 1000 joules/ second • 1g of water needs 4.184J to raise the temperature by

asked by Paul on December 15, 2010
71. Chemistry

8.1g of XSO4.7H2O crystal when heated at 90degree for 15 minutes gave 6.9g of the salt,which gave 4.9g when heated further at 120degree. If X is 72. Calculate the amount of water of crystallization in the intermediate and final salts. [X=72,S=32,O=16,H=1]

asked by Banko on December 1, 2016

A 75% alcohol concentration mixture of water and alcohol was made by mixing 30ml of pure alcohol with 150 ml of original mixture of water and alcohol. what was the alcohol concentration of the orignal mixture The amount of water has not changed. Since the

asked by Carllll needs help on April 13, 2007
73. ocean county college

A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat x change in temp (of

74. Chemistry

Determine if the solubility would increase, decrease, or stay the same: 1) A saturated solution of sugar water is cooled from room temp to 0 degrees Celsius. 2) A solution of ocean water with dissolved oxygen is heated from 10 degrees Celsius to 15 degrees

asked by Margaret on February 19, 2013
75. Chemistry (Combustion) formula question

Data; Volume of water, 100ml Room temp, 24C Initial water temp, 15C Final water temp, 30C Question: Calculate the mass of water heated. Hint: The density of the liquid water is 1.0g/ml. I have no idea how to do this. Can someone help? Thanks!

asked by Allyson on February 5, 2013
76. chem

Water (2330 g) is heated until it just begins to boil. If the water absorbs 5.53×105 J of heat in the process, what was the initial temperature of the water?

asked by Anonymous on October 20, 2010
77. chem 103

Question..where to start..If you had 250.0 g of copper (specific heat = 0.385), what temperature could you raise it to (starting from 20 degrees C) if you heated it with 1685 Joules of energy? If I use the formula q=MxCsX^T, How do I find ^T if I do not

asked by Andrew on July 21, 2013
78. astronomy

Take a plastic ball and put a little soapy water in it. Run your finger across the mouth to make a soap film. Now, without breaking the film, run hot water over the bottle. What happens to the soap film? How does this relate to what happens to a star when

asked by singh on May 4, 2007
79. physics

a .300 kg piece of metal is heated to 88 degrees celsius and placed in a copper calorimeter with a mass .150 kg which contains .500kg which contains .500 L of water that are both initially at 12.6 degrees celcius. Over short period of time the mixture

asked by Franky on April 19, 2013
80. chemistry

What is the energy released when steam at 25 g of steam at 10 degree celcius is cooled to ice at-10 degree celcius work heat change for the following changes calculated 150 degree Celsius steam --150 degree water 150 degree water to 0 degree water 100

asked by treasa on May 11, 2014
81. Physics

A laser used to weld detached retinas emits light with a wavelength of 652 nm in pulses that are 20 ms in duration. THe average power expended during each pulse is .600 W. (a) How much energy is in each pulse, in joules and electron volts? (b) What is the

asked by J on April 28, 2008
82. science

what method of separation would do the best job to separate sand and water? hint* What would happen to the water if you put the mixture of sand and water in a pan and heated it on a stove for quite a long time? What's it called when water goes into the

asked by jenna on June 21, 2006
83. chemistry

Water (2690 ) is heated until it just begins to boil. If the water absorbs 5.29×105 of heat in the process, what was the initial temperature of the water?express answer in Celsius.

asked by Kyle on September 20, 2010

A circular swimming pool has a diameter of 16 m, the sides are 3 m high, and the depth of the water is 2.5 m. How much work (in Joules) is required to pump all of the water over the side? (The acceleration due to gravity is 9.8 m/s 2 and the density of

asked by Sarah with an 'H' on October 15, 2014
85. Chemistry

What will happen if a mixture of BaCl2.2h2O and KCl heated up to 150 centigrade ?

asked by Ashen on May 28, 2018
86. physics

what pressure would you expect if the gas in the flask were heated to 150 degrees celsius?

asked by corrie on January 19, 2012
87. Science Ecology

Comparing my answer to the "suggested answer" in the back of the book. Q: Using an example, explain how convection currents are formed. My Answer: Convection currents are formed as a result of different densities in a fluid. For example, in a pot of water,

asked by Jasmine on December 11, 2017
88. Science

1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C? 2. A 300 g piece of aluminum is heated from 30 degrees C to 150 degrees C. What amount of heat energy is absorbed? 3. Determine the temperature change in each

asked by Debra on October 23, 2011
89. physics

If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 185 grams, what is the specific heat, c, of the rock

asked by Shay on April 1, 2013
90. physics

If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 189 grams, what is the specific heat, c, of the rock

asked by omar on September 7, 2013
91. Chemistry

When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m. -2.16 x m/-1.86 = 1.16 1.16/ .010 kg of water= 116 1.150/116=

asked by Marcus on February 10, 2013
92. ORGANIC CHEMISTRY

NAME THE PROCESSES OR TECHNIQUES IN THE FOLLOWING. 1.SEPARATION OF A SOLID FROM A SOLUTION 2.WHEN WATER IS COLD TO FORM ICE 3.WHEN WATER IS BOIL TO FORM VAPOR 4.WHEN IODINE IS HEATED DIRECTLY TO FORM GAS WITHOUT BEING LIQUID 5.WHEN STEAM IS COLD TO FORM

asked by SAMIRA on February 10, 2012
93. calculus

A circular swimming pool has a diameter of 14 m, the sides are 4 m high, and the depth of the water is 3.5 m. (The acceleration due to gravity is 9.8 and the density of water is 1000 .) How much work (in Joules) is required to: (a) pump all of the water

asked by Anonymous on February 22, 2013
94. science

3. One calorie is the energy required to raise one gram of water one degree Celsius. Since we use the joule as the standard measurement of energy, 1 calorie = 4.184 J. If a pot is placed on the stove with 2.4 liters of water at a temperature of 27°C, how

asked by Linda on October 30, 2014
95. physics

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on

asked by Ricky on July 7, 2010
96. physics

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on

asked by Ricky on July 7, 2010
97. Physics

Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0 °C, starting with (a)2.99 kg of water at 100.0 °C and (b)2.99 kg of liquid water at 0.0 °C.

asked by Tim on May 5, 2013
98. physics

Assume that the pressure is one atmosphere and determine the heat in joules required to produce 3.23 kg of water vapor at 100.0 °C, starting with (a)3.23 kg of water at 100.0 °C and (b)3.23 kg of liquid water at 0.0 °C

asked by Help on December 14, 2010