1. math

    If 2/9 gallon of water fills a bucket 3/5 full, how many gallons of water are needed to fill the bucket?
  2. physics

    Water waves in a lake travel 4.5 m in 1.7 s. The period of oscillation is 1.2 s. (a) What is the speed of the water waves? (b) What is their wavelength?
  3. P.S.

    A ball was dropped off a cliff and took 3.09 s to fall to the water below. Neglecting air resistance, how far (in meters) did it fall? (How far is it down to the water?)
  4. Math

    A thermos holds 1 1/4 quarts of water. How many thermoses can be filled with 5 quarts of water? My Answer: 6 1/4 am i right? i just multiplied 1 1/4 and 5 to get 6 1/4.
  5. physics

    How much heat does it take to warm up a 300g glass of water by 30 degrees C? (what is the formula for the specific heat of water?)
  6. Math

    A tank measures 30 can by 60cm by 50cm. What is the height of water in the tank when 60000 ml of water are poured into it?
  7. Math HELP!!

    The water level of a lake decreases by 6 inches over 3 years. What is the mean yearly change in the water level?
  8. science

    if 25 ml of sugar is mixed with 299 ml of water and then 50 ml of water is poured out, how much sugar remains in the 150 ml of wtare?
  9. physics

    A diver runs horizontally with a speed of 0.759 m/s off a platform that is 10.0 m above the water. What is his speed just before striking the water
  10. Chemistry

    How many moles of water are in 1.0g of water? (Give number only in space below to the correct number of significant figures)
  11. Science

    If too much of an unsaturated fat is added to bromine water, could this affect decolourisation of bromine water? All help is appreciated... > C >
  12. Chemistry

    How much heat is required to convert 9.00 g of water at 100°C into steam at 100°C, if ∆Hvap for water = 40.7 kJ/mol?
  13. pharmacy tech

    Determine the milliliters of water needed to prepare 2 oz of a 10% solution from a 12.5% solution and distilled water.
  14. chem

    a piece of (density= 10.5 g/ml)dropped into water displaces 21.56 ml of water. what is the mass (in grams) of this piece of silver?
  15. pharmacy tech

    Determine the milliliters of water needed to prepare 2 oz of a 10% solution from a 12.5% solution and distilled water.
  16. physics

    a piece pf ice floats in water.what will happen to the water level when the ice melts completely?
  17. Science

    I am making an essay about the conditions of our water resources and the issues concerning our water. What is a good title for the essay?
  18. chemistery

    How much heat, in joules and calories, is needed to heat up 295 mL of water from 26.6 °C to 85.1 °C? Assume the density of water to be 1.00 g/mL.
  19. math

    Water stations will be placed every 400 hundred meters of a 5-kilometer race. How many water stations are needed.
  20. chemistry

    if 40kj of energy is absorbed by 500g od water in 10c temprature. what is the fainal temprature of the water?
  21. chem

    when u pierce a hole in a bottle filled with water, but the cap is on, why doesnt the water spill out through the hole?
  22. Org. Chem.

    why don't water and benzophenone hydrogen bond? benzophenone has a C=O and water forms H bonds too.
  23. chem

    what effect would using fsr too much water to dissolve salt in water have on the results of a sand salt lab
  24. chemistry

    How much heat is required to warm 1.60 L of water from 26.0 degree C to 100.0 degree C? (Assume a density of {1.0 g/ml for the water.)
  25. chemistry

    how does the solubility of gases in water compare to the solubility of solids in water as the temperature of the solution increases?
  26. chemistry

    if copper (II) sulfate pentahydrate is known to be 36% of water how many grams of water will be lost when heating a 5.75 grams sample?
  27. Chemistry

    Calculate the total heat required to vaporize 1.5 kg of water at 100oC to water vapor at 100oC?
  28. chemistry

    A typical adult body contains 55 \% water. If a person has a mass of 61.0kg , how many pounds of water does she have in her body?
  29. chemistry

    How much heat is required to warm 1.30 L of water from 30.0 degrees C to 100.0 degrees C? (Assume a density of 1.0 g/mL for the water.)
  30. Physics

    Calculate the water pressure at the base of the Hoover Dam. The depth of water behind the dam is 220
  31. physics

    A diver runs horizontally with a speed of 0.759 m/s off a platform that is 10.0 m above the water. What is his speed just before striking the water?
  32. chemistry

    what will be the final temperature of a system in which 150.0g of water at 5.0 degrees C are added to 1.00L of water at 90.5 degrees C?
  33. math

    a faucet leaks 75 milliliters of water per minute. How many liters of water does the faucet leak in 3 1/2 hours ?
  34. Physics

    If a force of 10 N is required to keep a piece of wood 1m under water (density=1g/cm3 ), the force needed to keep it at 2 m under water is:
  35. math

    Use the line graph to solve. What was the difference in water levels between Week 2 and Week 4? A. 10 m B. 1 m C. 0.10 m D. 0.01 m the water kecvers is 5.3 and 5.4
  36. chemistry

    an iron rod embedded in ice placed in water beaker.what will be level of water when ice melts
  37. chem

    How many moles of water are produced when 1.05 g of oxygen gas reacts with 1.22 g of hydrogen gas to produce water?
  38. bio

    if you had two fish in two separate containers with different volumes (a-more water and b- less water)which container would have more oxygen available to the fish when first introduced
  39. Algebra

    Time(hr) Water level (ft) 0 50 2 40 4 30 6 20 Enter the rate of change of the water level in feet per hour.
  40. Physics

    The part of an iceberg that extends above the water for ice density of 0.9g/cm3 and salted water of 1.1 g/cm3 is
  41. 7h grade Math

    A child's body i approximatly 75% water. About how many pounds of a 60 pound child's weiht is water?
  42. physics PLEASE helpp

    Find the net change in entropy when 213 g of water at 0.0°C is added to 213 g of water at 96.9°C.
  43. chemistry

    a student dissolves 5 grams of table salt into 600 mL of water. in this situation, water is the _, and salt is the _
  44. Math

    A five gallon jug is 41.5pounds heaiver when it is full of water, than when it is empty. How much does the water weigh per gallon.
  45. chemistry

    solubility of NaCl in water at 298K is 35.8 kg per 100 kg of water calculate mass fraction of NaCl?
  46. Physics

    A student drops a rock from a bridge to the water 12.0 meters below. With what speed does the rock hit the water?
  47. Chemistry

    During fractional distillation of ethanol/water mixture, why can't pure ethanol be obtained (i.e. distillated contains a little water)?
  48. Math

    Sunitha is interested to find the Relation between the diameters of Jupiter and the earth.From the given data,it is known that the volume of Jupiter is 729 times the volume of earth.she concluded that the diameter of Jupiter is 9 times the diameter of the
  49. water cycle

    what does water freezes into?
  50. Math

    The tides at cape Capstan, New Brunswick, change the depth of the water in the harbour. On one day in october, the tides have a high point of approximately 8m at 2 p.m and a low point of approximately 0.6m at 8 p.m. A particular sailboat has a draft of 2m.
  51. CHEM

    The vapor pressure of pure water at 25 °C is 23.8 torr. Determine the vapor pressure (torr) of water at 25 °C above a solution prepared by dissolving 35 g of urea (a nonvolatile, non-electrolyte, MW = 60.0 g/mol) in 75 g of water. where have i made a
  52. chem

    Describe in detail by words how to prepare 200ml of .150M HCl from a 1.00 M HCl stock solution? Need help with this please? i used C1V1=C2V2 and got volume 2 = 33L or 0.33mL. to prepare the solution i need to weigh 1 gram of HCL (from 1.00M HCl stock
  53. Physics

    A car with a mass of 1264 kg is coasting in neutral on a straight,level road. It slows down, and its speed as a function of time is given by the equation: Constant Value Units a 26.8 m/s b 0.310 m/s2 c 2.10·10-3 m/s2 At a time of 36.0 s the speed, as
  54. physics

    What is the kinetic energy gained by a 500kg car accelerating from rest to 27m/s? 1/2=mv^2 > 1/2(500)(27m/s)^2= 182,250J a. What is the power output in watts of the engine that causes this acceleration in 4.00s? 27m/s*4s= 108m/s^2 1/2(500)(108)= 27,000
  55. calculus

    The maker of an automobile advertises that it takes 10 seconds to accelerate from 30 kilometers per hour to 90 kilometers per hour. Assuming constant acceleration, compute the following. (a) The acceleration in meters per second per second (Round your
  56. fullerton

    A vertical container with base area measuring 12 cm by 18 cm is being filled with identical pieces of candy, each with a volume of 50.0 mm3 and a mass of 0.0200 g. Assume that the volume of the empty spaces between the candies is negligible. If the height
  57. projects

    And you ought to do some research on mordants. In this case try the experiment on each dye with and without a tablespoon of vinegar in the solution. maybe if you test water it would probably be the same, good question AND, you may wish to try more than one
  58. Calculus - Math

    Sorry in advance - it's a very wordy, multi part question. The parts with the ..........are the parts that require an answer. I have no idea where to begin or what to do to solve this. We will determine the volume obtained when revolving the solid bound by
  59. engineering science

    A ramjet is to propel an aircraft at Mach 3 at high altitude where the ambient pressure is 8.5 kPaand the ambient temperature T-node is 220 K. The turbine inlet temperature T is 2540 K. If all components of the engine are ideal - that is, frictionless -
  60. math

    An open box is to be made from a flat square piece of material 20 inches in length and width by cutting equal squares of length x from the corners and folding up the sides. (a) Write the volume V of the box as a function of x. Leave it as a product of
  61. chemistry

    When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation
  62. One more Chem

    One more A helium balloon has a volume of 2.30 L at 23.5 deg C and a pressure of 1.00 atm at sea level. the ballon is released and floats upward. At a certain height the atmospheric pressure is 0.810 atm and the temp is 12. C. What is the volume of the
  63. chem211

    A chemistry professor has a cup of coffee containing 50.0mL of room temperature coffee at 25.0C. The professor also has a new pot of hot coffee at temperature of 96.0C. What volume of hot coffee will the professor need to add to his cold coffee to reach
  64. Math

    If your neighbor's house is 2/8 smaller than you house and the volume dimensions of your house are 13, 26 and 130 sq ft, what is the volume of your neighbor's house
  65. Chemistry

    A 12% solution is diluted 1:60. What is the volume and concentration of the final solution? I started off with this 12(1/60) = 0.2% However, how do I get the final volume and concentration? Thanks
  66. Math

    i need this answer A.S.A.P what is the volume of pyramid C if the volume of pyramid D is 4608 m cubed and the height of pyramid D is 24 and the height of pyramid C is 12
  67. chemistry

    When 1.50 g of calcium chloride is dissolved in 150.0 g of water, the temperature of the water rises from 20.50°C to 22.25°C. Assume that all the heat is absorbed by the solution. (a) Calculate the heat of solution per gram and per mole of CaCl2 that
  68. math

    If i place a dish of ice outside in the sun, The ice has a mass of 0.59 kg and a surface area of 0.039 m2. Assuming that the ice is originally at 0 °C and using my answer for part b, which was 1370w/m^2 * 49 * 0.039m^2 = 26.18 watts, How long do i have to
  69. chemistry

    Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3·x H2O, where x is the number of moles of
  70. chemistry

    Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3·x H2O, where x is the number of moles of
  71. English

    Can you check these sentences about summer holidays? Thank you. 1) When I was at the seaside, I usually bathed twice in the mornings. (went for swims). 2) I pushed my child on a swing and I watch him going on a slide. When I was at the swimming pool, I
  72. chemistry

    Hydrogen gas can produced by the reaction between metallic aluminum and aqueous hydrochloric acid 2Al+6HCl----2AlCl3+3H2 Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes
  73. Physics

    #1.) A wind turbine has a Cp of 0.42 and extracts 50 kW of power when the wind velocity is 25 m/sec. How long are the blades? (ρ = 1.2 kg/m3) #2.) An electric hot water heater is used to heat 30 gallons of water from 20 °C to 45 °C. a. What heat
  74. physics

    You have designed a rocket to be used to sample the local atmosphere for pollution. It is fired vertically with a constant upward acceleration of 19 m/s2. After 23 s, the engine shuts off and the rocket continues rising (in freefall) for a while. (Neglect
  75. Physics

    A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. A) Calculate the work done in raising the motor B) How much useful work was done? C) What
  76. Chemistry

    What is the value of q when 8.21g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is -40.7 kJ/mol. I tried using the equation q= m x Cs x Delta T, but I never got the right answer which is 18.5 kJ apparently, so I need to find
  77. Chemistry

    Calculate the pressure in atmospheres in the ocean at a depth of 3.20 km assuming the constant density of sea water in the water column is 1.10 g/mL. The atmospheric pressure is 1.00 atm.
  78. Physics

    Use the following two viscosity values for liquid water: η = 1.8 x 10-3 Ns/m2 at 0 o C η = 2.8 x 10-4 Ns/m2 at 100 o C At what temperature do you need a lesser force to pull a given glass slide with a given speed v though the water?
  79. Physics

    Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 40m above that pipe. Pa?
  80. physics

    a wooden board 10cm. thick floats in water (1000kg/m3) with its upper surface parallel to and 3cm above the water surface.what is the density of the wood?
  81. chemistry

    How many joules of heat are required to completely covert 85.0 grams of water at 40.0° C to steam at 100°C? For water: c = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol
  82. Physics

    From a height of 30.5 , a 1.45 bird dives (from rest) into a small fish tank containing 49.0 of water. What is the maximum rise in temperature of the water if the bird gives it all of its mechanical energy?
  83. Physics

    55) A 200-g block of copper at a temperature of 90 C is dropped into 400g of water at 27 C. The water is contained in a 300-g glass container. What is the final temperature of the mixture?
  84. chemistry

    what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature 22oC mass of water is 50g
  85. Physics

    A rain cloud contains 2.72 × 10^7 kg of water vapor. The acceleration of gravity is 9.81 m/s^2. How long would it take for a 3.79 kW pump to raise the same amount of water to the cloud’s altitude of 1.85 km? Answer in units of s
  86. Math Calc 1

    Word Problems >:( A cylinder tank of water is laying on it's side. Radius is 2 and height is 10. How much work is required to pump all of the water out of the tank?
  87. Physics

    A certain rain cloud at an altitude of 1.90 km contains 3.20 107 kg of water vapor. How long would it take for a 2.18-kW pump to raise the amount of water from Earth's surface to the cloud's position?
  88. chemistry

    The amount of lead in drinking water is 0.025 mg/L. Express this concentration in molality. {molar mass of lead is 207.2 g/mol and the density of water is 1.00 g/cm.}
  89. chemistry

    Hydrogen gas has been suggested as a clean fuel because it produces only water vapor when it burns. If the reaction has a 95.4% yield, What mass of hydrogen forms 94 Kg of water?
  90. physics

    Mrs. Johnson's kid is trying to drink with a straw that runs through an airtight cork in the top of a bottle of water. Please explain to her kid why he won't get any water.
  91. calculus

    A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.4 \text{m}^3\text{/min}. How fast is the water level rising when it is 2.6 m?
  92. science equations

    a boy standing n a high cliff dives into the ocean below and strikes the water after 2.5 s. what is the boy's velocity when he hits the water? deltav=gxt
  93. Physics

    A 400-g block of copper at a temperature of 85°C is dropped into 300 g of water at 33°C. The water is contained in a 250-g glass container. What is the final temperature of the mixture?
  94. ssct

    (phyics) question: calculate the final temperature of the water if 400grams of water at 80degress Celsius is poured into a 100grams pot at 30dgrees Celsius .
  95. BIOLOGY

    Table Sugar can react with water to form 2 other compounds, glucose & fructose. But, when you add sugar to a glass of water the reaction is very slow - WHY? What would it need to speed it up?
  96. Chemistry

    Hydrogen gas has been suggested as a clean fuel because it produces only water vapor when it burns. If the reaction has a 95.4% yield, What mass of hydrogen forms 94 Kg of water?
  97. physics

    A microwave runs off a 110. V circuit and draws 7.00 A of current. How much water would be required to run the microwave for 10.0 minutes if it is powered by a 10.0­m high water wheel?
  98. 11th grade

    The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?
  99. Physics

    Water flows at 2.4 m/s through a garden hose of diameter 1.59 cm and emerges from a nozzle of radius 0.64 cm. If the nozzle is directed vertically upward, to what height would the water rise?
  100. Geometry

    By the water cooler in an office, there are conical paper cups. The radius is about 1.2 inches and the height is about 3.5 inches. How much water does the cup hold if it is filled to the top?