# how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3

22,259 questions, page 71
1. ## math

Show that -1/2+ 1/2(i3 root) is a cube root of 1

asked by Praphul on December 9, 2012
2. ## maths

prove that : 3^-3 * 6^2 * root 98 / 5^2 cube root 1/25 *(15)^-4/3 *3^1/3

asked by tuhituhi on March 29, 2013
3. ## Physics

A spring loaded ballistic pendulum gun requires an increasing force to load. When loading a ball of mass 0.054 kg, the spring is compressed 7.00 cm, the gun is fully loaded, and the force required is 70.0 N. a) Calculate the work required to load the gun.

asked by Emily on April 12, 2016
4. ## math

You build an architectural model of a new office complex using a scale factor of 75. Suppose you wanted to fill both the scale model office complex and the actual office complex with marbles. How many times the number of marbles required for the model

asked by yancy on March 26, 2015
5. ## (1-11) Chemistry - Science (Dr. Bob222)

Liquid chloroform (CHCl3) is placed in a closed container and allowed to equilibrate with chloroform vapor. With the temperature held constant, additional chloroform is introduced into the system, and the vapor-liquid equilibrium is reestablished.

asked by Ana on May 10, 2014
6. ## science

Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? (1 point) The faster object has the same kinetic energy as the slower object. The faster

asked by Mel❤nie on December 18, 2018
7. ## chemistry

A 10.0 grams piece of gold 90.0 Celsius was stirred into 15.0ml of water at an initial temperature of 25.0 degrees Celsius. The final temperature of the water was 26.34 degrees celsius. Calculate the specific heat of gold. The specific heat of water is

asked by casey on October 20, 2011
8. ## chemistry

A 100.0 ml sample of 0.300 M NaOH is mixed with a 100.0 ml sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.0 degrees celcius; the temperature of the resulting solution was recorded at 37.0 degrees celcius. Determine

asked by jen on July 12, 2012
9. ## chemistry-Dr BOB

Hi Dr. Bob, I first want to tank you for all your help. Secondly, I don't understand why this was marked wrong. When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C.

asked by patrick on October 18, 2015
10. ## Physics

Coefficient of volume expansion of some liquids(a/˚C) Alcohol=1.1x〖10〗^(-4) Glycerin=5.0x〖10〗^(-4) Water=3.7x〖10〗^(-4) Ether=1.63x〖10〗^(-4) Mercury= 1.1x〖10〗^(-4 What is the increase in volume of 0.3m cube of ethyl alcohol when heated

asked by Angela on December 8, 2013
11. ## Math 117

The formular r= 2 cube root5L can beusedto approximate the speed r,in mile per hour,of a car that has skid marks of lenght L,in feet. How far will a car skid at 60 mph.

asked by Joseph on February 12, 2012
12. ## physics

a cubical block of side 2cm is lying on a table. if the density of the material of the cube is 10000kg/m^3. find the pressure exerted by the block on the table. (g=10m/s^2).

asked by prudhvi on January 6, 2013
13. ## Math

If each unit cube has edges 3/4 foot long, what is the volume of the blue outlined prism? (I can't post links on here, so, if you know this question, please answer it!) A) 5 ft3 B) 8.4 ft3 C) 10 ft3 D) 15 ft3

asked by ღCrxmbZღ on March 28, 2019
14. ## Math

A sphere has a volume of 200m3 . What is the volume of the smallest cube that this sphere would fit inside of? (Hint: try drawing a diagram of a side or top view of this situation)

asked by Bob on October 14, 2014
15. ## Chemistry

Mass of metal=45.00 grams Initial temp= 20.0 degrees Celcius Final temp= 87.0 degrees Celcius 4.184 J/g-specific heat of H2O The metal was heated up from initial temp to final temp. What would be the metal's highest temperature? The specific heat of the

asked by Paige on June 7, 2018
16. ## physics

How many times as large a centripetal acceleration is required of a car rounding a curve at 45.1 MPH as for one rounding the same curve at 10.8 MPH? That is, what is the ratio of the centripetal acceleration required for the faster car to the same for the

asked by honeybell on September 13, 2012
17. ## y no one anwering my ques

How does active transport differ from passive transport? 1. Molecules move down a concentration gradient in active transport. 2. Carrier proteins are used only in active transport. 3. Energy is required only in active transport. 4. Energy is required only

asked by anmol on February 19, 2012
18. ## Science-English

What would happen if the temperature of the Tundra increased? The permafrost will melt and since the tundra is flat land bogs and shallow lakes will appear and won't drain. Rainfall will change, although I'm not sure if it will increase or decrease. Plants

asked by Sam on April 6, 2009
19. ## English - Shakespeare

I was wondering if you could help me find literary devices in this passage in "Much Ado about Nothing" by Shakespeare: BENEDICK That I neither feel how she should be loved nor know how she should be worthy, is the opinion that fire cannot melt out of me: I

asked by Aaron on December 16, 2009
20. ## Chemistry help plzzzzz!!!!!

I've tried solving this problem 100x and i keep getting it wrong. I don't know where i am going wrong. Wouldnt it be: (100ml * 4.180 * 6.49) + (6.50*6.49) 2713+42.2=2755.2= 2755.2/0.05=55104 Then convert to kj so 55104/1000=55.104 which would be 55.1 for

asked by Ashley on April 10, 2014
21. ## Math

An electrician was hired to run the wires for a surround-sound stereo speaker system. She purchased 2 rolls of 14-gauge speaker wire. Each roll contains 4 m of wire. For each of 2 speakers, 2 ft. of wire are required. For each of the other 2 speakers, 11

asked by Whitney on October 1, 2014
22. ## thermochemistry

. Mountain climbers often brew tea by melting snow, which they heats over a stove. Our stove burns butane (C4H10), which has a heat of combustion of -2878 kJ/mol. The temperature of the snow is initially at -20 °C, and we need 80 °C water to brew tea. a.

asked by David on April 9, 2017
23. ## Science

A 10 lb. frozen boneless roast needs to be thawed and baked to a temperature of 200 degrees F. The storage freezer maintains a temperature of -10 degrees F. Pork changes from solid to a thawed state at 30 degrees F and has the following properties: Heat

asked by Sejul on September 2, 2012
24. ## Physics

PLEASE HELP! I'm doing a physics demonstration, and in part of it I'm trying to explain why steel wool burns and normal steel doesn't. I know it's something to do with the smaller surface area and/or mass but I don't know WHY it burns because of this. Can

asked by Jo on September 5, 2006
25. ## Chemistry

Back again with another problem :) How do you calculate the enthalpy change, in kJ/mol for the reaction of copper(II) sulfate? 0.0210 mol of copper sulfate was added to 25 cm3 of water. The temperature increased by 14°C. The specific heat capacity of

asked by Autumn on October 24, 2017
26. ## Creative Writing

i'm so stuck on this assignment. i don't get it at all. : 1. Using the categories you created earlier for ice cream and toppings, write an informal classification/division essay or poem. don't forget to include a theme and maintain a consistent tone for

asked by y912f on October 27, 2009
27. ## Chemistry

What is the final temperature after a 21.8 g piece of ice is placed into a styrofoam cup containing 114 g of hot water at 68.2 degrees C. Please explain because I don't even understand how to start.

asked by JJ on October 5, 2011
28. ## Science // Help

How did planetsmals form planets? They broke apart into smaller chunks. They collided and stuck together They cooled and pulled ice together They began to rotate If anyone took the assessment please help x

asked by unknown on November 9, 2017
29. ## science

which of the following features is associated with the inner planets? rings made of ice and dust lots of moons large amounts of iron and silicon thick atmospheres

asked by hope on December 3, 2014
30. ## physics 1

A 8.00-kg block of ice, released from rest at the top of a 1.44-m-long frictionless ramp, slides downhill, reaching a speed of 2.54m/s at the bottom.

asked by Anas on November 9, 2014
31. ## physics

asked by genny on January 5, 2015
32. ## Science

All of the following require breaking and forming chemical bonds except: freezing ice ** a plant decaying a piece of silver tarnishing roasting a marshmallow

asked by T on March 16, 2018
33. ## science

which of the following features is most associated with the inner planets? A. rings made of ice and dust B lots of moons C large amounts of iron and silicon D thick atmospheres is it c or d?

asked by hope on December 3, 2014
34. ## college physics

two people- one twice as heavy as the other one, play tug-of-war with a 12m ideal rope while standing on a frctionless ice surface.Would any of them move and if he does, how far?explain why.

asked by Anonymous on May 6, 2010
35. ## Physics for Life science

1. Two people-one twice as heavy as the other one, play tug-of-war with a 12m ideal rope while standing on a frictionless ice surface. Would any of them move and if he does, how far? Explain why?

asked by Simeon on May 3, 2010
36. ## College Chemistry

1. From data below, calculate the total heat (in J) associated with the conversion of 0.514 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.) Boiling point at 1 atm 78.5°C cgas

asked by Arian on January 22, 2011
37. ## College Chemistry

1. From data below, calculate the total heat (in J) associated with the conversion of 0.514 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.) Boiling point at 1 atm 78.5°C cgas

asked by Arian on January 23, 2011
38. ## College Chemistry

1. From data below, calculate the total heat (in J) associated with the conversion of 0.514 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.) Boiling point at 1 atm 78.5°C cgas

asked by Arian on January 22, 2011
39. ## physics

A snow maker at a resort pumps 260 kg of lake water per minute and sprays it into the air above a ski run. The water droplets freeze in the air and fall to the ground, forming a layer of snow. If all of the water pumped into the air turns to snow, and the

asked by Anonymous on November 25, 2013
40. ## Science

Which of these energy changes takes place in a solar cell? A.Heat energy to light energy B.Light energy to electrical energy C.Electrical energy to heat energy D.Thermal energy to electrical energy C?

asked by Rezu on April 2, 2012
41. ## Geometry

32. What is the maximum volume of a square pyramid that can fit inside a cube with a side length of 18cm? 5,832 cm3 2,916 cm3 1,944 cm3 972 cm3

asked by Becky on May 13, 2016
42. ## Calculus - Optimization

The cost of fuel for a boat is one half the cube of the speed on knots plus 216/hour. Find the most economical speed for the boat if it goes on a 500 nautical mile trip.

asked by Sam on March 20, 2013
43. ## Maths

A Glass Cylinder With A Radius Of 7cm Has Water Up To A Heiht Of 9cm.A metal Cube Of 5.5 Cm Edge Is Immersed In It Completly.Calculate The Height By Which The Water Rises In The Cylinder.

asked by Shewit on April 23, 2019
44. ## Math

Hello! I am here because I have a question. In math we are starting a new unit: Probability. One of the questions on my homework are "A number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a complement of 4." I have no idea

asked by Curious on March 11, 2013
45. ## math

A hollow cylindrical iron pipe is of length 35 cm . It's outer and inner diameters are 10cm and 8cm respectively . Find the weight of the pipe if 1 cube centimeter of iron weights 7 gram

asked by anu on January 7, 2016
46. ## Chemistry

The density of aluminum is 2.70 g/ml. What is the mass of a cube of Al that measures 2.20 cm on each side?(remember significant figures and to include the units of g in your answer, remember that 1 ml=1 cm3) Need help can someone go step by step so I can

asked by Anonymous on May 19, 2017
47. ## MATH

a vase in the shape of a cube has a side measuring of 7 inches which of the numbers below is the best estimate of how much water it will hold? a 125 in3 b 200 in3 c 300 in3 d 350 in3

asked by marquis on February 28, 2008
48. ## physics

an electron inside spherical metallic particle of volume 10^ -12 metre cube has a kinetic energy about 10 eV. use uncertainty relations to find relative uncertainty in electron velocity

asked by prerana on September 29, 2013
49. ## uncertainty principle

an electron inside spherical metallic particle of volume 10^ -12 metre cube has a kinetic energy about 10 eV. use uncertainty relations to find relative uncertainty in electron velocity .

asked by ...... on September 29, 2013
50. ## Math

The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT

asked by Anonymous on July 10, 2011

The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT

asked by kIM on July 11, 2011

The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT

asked by kIM on July 11, 2011
53. ## math

The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT

asked by kim on July 11, 2011
54. ## charle drew high

a number cube is rolled twice. what is the probability of rolling an odd number on the first roll and a multiple of three on the second roll?

asked by ameyo on February 8, 2012
55. ## math

lisa rolls a number cube two times. the first time she gets a 3. list all the possible outcomes of lisa's two rolls.

asked by jerry on May 16, 2012
56. ## math

What wouldnthenequation benif thenproblem was "The cube of positive number divided by the square of the same positive number." ?

asked by Samantha on January 13, 2014
57. ## math

If a cube is sliced into equal sized smaller cubes, which quantity of smaller cubes could be attained? a)4 b)16 c)1/4 d)-1/5 e)1

asked by john on September 3, 2012
58. ## math

a cube made up of some blocks and there are 12 cubes ,block a and b are removed from each other.how many blocks will remain in the 12 cubes altogether

asked by don on August 18, 2012
59. ## Precalculus

2=-4+4 square root x^3 I added the four to both sides divided four squared then divided that my cube root my answer:1.31

asked by denise R. on August 22, 2011
60. ## math

below are the results of tossing a number cube 8 times find the experimental probability of tossing an even number. 3,4,1,2,5,1,6,5 1. 1/4 2. 3/8 3. 1/2 4. 5/8

asked by jessica on June 5, 2014
61. ## Geometry

What measurements (if any) are associated with each of the following ideas? a point; a line; a union of a square and its interior;and a union of a cube and its interior?

asked by Melissa on February 3, 2017
62. ## sri krishna

If the surface area of a cube is 18sq.cm what is the surface area of a cuboid formed by joining 3 of these cubes

asked by sanjana on October 19, 2015
63. ## Math7 Am I right?

Below are the results of tossing a number cube 8 times. Find the experimental probability of tossing an even number. 3,4,1,2,5,1,6,5 3/8 right?

asked by moby on May 10, 2014
64. ## math

find the ratio of the volume of a sphere with a radius of 10 meters to the volume of a cube with a side of 10 meters

asked by araceli on September 9, 2011
65. ## pre cal

Determine algebraically whether the function is even, odd, or neither even nor odd. f as a function of x is equal to 14 times the cube root of x

asked by Jorgeeee on June 23, 2014
66. ## pre algebra

I have a cube of 3 by 3 by 3 centimeters , I paint all the surfaces white. After that I'd take my saw, and saw it into cubes of 1 by 1 by 1. I will have 27 cubes after. How many will have no white color on any surface?

asked by shannon on May 20, 2013
67. ## maths

What is the maximum number of cubes with a side of length 1/3 that can fit inside a cube with a side of length 1 ? 1.3 2.9 3.18 4.27

asked by peter on August 11, 2014
68. ## math

A fair number cube is rolled twice. W aht is the probbability that the first roll will be even and the second roll will be odd number?

asked by zina on June 10, 2011
69. ## math

SHAPE : CUBE IF U PICK A FACE, HOW MANY FACES ARE PERPENDICULAR TO IT? IF U PICK AN EDGE, HOW MANY EDGES ARE PERPENDICULAR TO IT?

asked by Celest on June 6, 2012
70. ## physics

a cube of gold 30mm long on each edge is worth \$10,000.how much is a gram of gold worth?

asked by nanag on October 26, 2011
71. ## algebra

a number cube is rolled 2 times in a row. what is the probability of rolling a number greater than 2 both times?

asked by anon on May 7, 2013
72. ## Maths

The measure of an edge of a cube is 6.5cm. Find its surface area and lateral surface area?

asked by Tarunikka on October 13, 2016
73. ## math

if angie rolls a fair number cube 66 times about how many times will she roll a number that is odd and less than 5

asked by aiden on May 9, 2019
74. ## Math

1. What is the probability of rolling a number less than or equal to 6 when rolling a six-sided number cube? a. 0.17 b. 5% c. 5/6

asked by Amber on February 4, 2016
75. ## chemistry

The letters CHEMISTRY were spray painted in blue paint on the snow. After a while the sun comes out and the snow under the blue paint melts while the snow around the letters do not. Why did the snow under (rather than around) the blue paint melt?

asked by Heather on November 19, 2013
76. ## Science

You have been commissioned to design a stand]alone solar PV system (solar panels + battery array) for a 1000ft2 occupied between May through October, off]line cottage located near Corpus Cristi, Texas. The PV array should supply the daily average

asked by Sarah on April 15, 2009
77. ## Math

Can someone help me reword these two things? I don't like how I did them but I can't think of anything else. Thanks!! 1. PROMPT: What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a

asked by cAt.ExE HaS sTopPeD wORkInG on September 25, 2018
78. ## a. chem

A 50.0 mL sample containing Cd2 and Mn2 was treated with 58.7 mL of 0.0500 M EDTA. Titration of the excess unreacted EDTA required 17.7 mL of 0.0300 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN–. Titration of the newly freed

asked by Lana on April 4, 2013
79. ## Statistics

A pharmaceutical company claims its new medication relieves painful symptoms caused by tension headaches within 15 minutes. To investigate this claim, a local health clinic conducts a study of 45 patients who suffer from chronic tension headaches. Each

asked by Bill on March 26, 2013
80. ## History

What economic reasons contributed to the beginning of the French Revolution? (Select all that apply.) king Louis xvi required Protestants to pay higher taxes king Louis xvi required Catholics to pay higher taxes france was in debt due to overspending on

asked by malia on October 31, 2017
81. ## college statistics

the average length of time required for students to complete a test in a an introductory statistics course is found to be 50 minutes with a standard deviation of 12 minutes. if students are allowed 80 minutes to complete the test , approximately what

asked by Chelsea on November 6, 2014
82. ## heat of vapor pressure

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -9500 K. According to the Clausius Clapeyron equation, Hvap is ? kJ/mol. The vapor pressure is proportional to exp

asked by yayhawknelson on January 18, 2007
83. ## Math (Calculus) (Work)

Six and one-half foot-pounds of work is required to compress a spring 4 inches from its natural length. Find the work required to compress the spring an additional one-half inch. (Round your answer to two decimal places.) This is what I did so far: 4 in =

asked by Ray on May 2, 2017
84. ## Finance

Cochrane, Inc., is considering a new three-year expansion project that requires an initial fixed asset investment of \$1,860,000. The fixed asset will be depreciated straight-line to zero over its three-year tax life, after which time it will be worthless.

asked by Alec on March 24, 2014
85. ## sarah

In an experiment to determine the rate at which heat is extracted from a hot material, 305 g of the material at 90 °C is put into a 50 mm diameter copper vessel to a depth of 90 mm as shown below. The hot material and calorimeter are placed in a container

asked by john on April 12, 2011
86. ## Chemistry

Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose (C6H12O2), according to the

asked by UnName on October 24, 2013
87. ## Chemistry

1. Consider a 1.00g unknown sample that contains 62.0% sodium carbonate and 38.0% sodium bicarbonate, NaHCO3, by mass. When this sample is dissolved in water, how many mL of 0.200M HCl will be required to convert all of the carbonate to bicarbonate? How

asked by Mia on February 26, 2014

Which of the following correctly describes the net energy change during a reaction? A. The net change in energy is negative for endothermic reactions where energy is required. B. The net change in energy is positive for endothermic reactions where energy

asked by Morgan on November 25, 2014
89. ## college chemistry

Suppose you have a 0.200 M solution of the nitrogen-containing weak base NX. Suppose you wish to titrate 25 mL of this 0.200 M NX solution with a 0.100 M solution of the strong acid HNO3. Given that the Kb value of NX is 6.50x10-5, complete each of the

asked by Aubree on April 21, 2010
90. ## Chemistry

Would a substance that does not form hydrogen bonds have a high or low surface tension? What about vapor pressure, specific heat,heat of vaporization or boiling point? It requires extra energy to break hydrogen bonds so a substance that does not form H

asked by Dave on March 6, 2007
91. ## Math

Please help me with this ASAP! I need help with this just checking my answers thanks 1. There are 14 blue marbles, 8red marbles, and 12 green marbles in a jar. What is the ratio of the total number of marbles to the number of red marbles? A. 24:8 B. 34:8

asked by Katie on May 26, 2016
92. ## math

Aglass cylinder with aradius of 7cm has water up to aheight of 9cm. Ametal cube of 5.5cm edge is immersed in it completely. Calculate the height by which the water rises in the cylinder.

asked by tarekegn on May 17, 2015
93. ## Math

Sam rolls a strike in 6 of the 10 frames of bowling What is the experimental probability that Sam will roll a strike in the first frame of the next game ? Explain why a number cube would not be a good way to simulate this situation Please help !!!!😖

asked by Kim on March 2, 2015
94. ## College math

I really need to know the answer to this extra credit problem. Please help! A quantity, W, is directly proportional to X and the square of Y and inversely proportional to the cube of Z. W=3 when X=4, Y=2 and Z=4. What is the value of W when X=8, Y=9 and

asked by Lorie on April 6, 2013
95. ## Math urgent help please!!

You have 500 cm² of material available to cover different shapes. what is the maximum volume of each object that you could make with this amount of material? A.) a cube B.) a sphere I've been stuck on this for so long, please show me how to do this step

asked by Miley on January 7, 2014
96. ## maths

A glass cylinder with aradius of 7cm has water up to aheight of gcm. A metal cube of 5.5cm edge is immersed in it completely. Calculate the height by which the water rises in the cylinder.

asked by tarekegn on May 13, 2015
97. ## physic

Hi! Help me please, thank you so much. What mass of water at 28.0 °C must be allowed to come to thermal equilibrium with a 2.05-kg cube of aluminum initially at 1.50 102 °C to lower the temperature of the aluminum to 54.8 °C? Assume any water turned to

asked by Chan on December 3, 2009
98. ## Math

Dree rolls a strike in 6 out of the 10 frames of bowling. What is the experimental probability that Dree will roll a strike in the first frame of the next game? Explain why a number cube would not be a good way to simulate this situation.

asked by Anonymous on March 1, 2016
99. ## math

Dree rolls a strike in 6 out of the 10 frames of bowling. What is the experimental probability that Dree will roll a strike in the first frame of the next game? Explain why a number cube would not be a good way to simulate this situation. THANKS!!

asked by kimie on February 3, 2016
100. ## Math quick question

You have 500 cm² of material available to cover different shapes. what is the maximum volume of each object that you could make with this amount of material? A.) a cube B.) a sphere I've been stuck on this for so long, please show me how to do this step

asked by Miley on January 7, 2014