# A 25.00 mL sample of seawater taken from a depth of 1000 meters weighs 25.75 g. What is the density of seawater?

33,813 results

1. ### Chemistry

A 25.00 mL sample of seawater taken from a depth of 1000 meters weighs 25.75 g. What is the density of seawater?
2. ### Physics

Can you please show all your work so that I can understand how the problem is solved? In the Challenger Deep of the Marianas Trench, the depth of water is 10.9 km and the pressure is 1.16 x 10^8 Pa. a) if a cubic meter of sea water is taken from the surface to this depth, what...
3. ### Urgent Help needed in PHYSICS!

A spherical balloon is inflated to a diameter of 20.0 cm. Assume that the gas in the balloon is of atmospheric pressure (101.3 kPa) and is at a temperature of 20.0 ¡ãC. It is then taken by a diver 15.0 m under the sea. The temperature of the seawater at this depth is 16.0...
4. ### Physics

The interior of a submarine located at a depth of 50 m in seawater is maintained at sea-level atmospheric pressure. Find the force acting on a window 20 cm square. The density of seawater is 1.03 × 103 kg/m3
5. ### delgado community college

seawater contains 0.0065% (by mass) of bromine. how many grams of bromine are ther in 1.oo l of seawater? the density of seawater is 1.025 g/ml.
6. ### Physics

Seawater has a density of about 1024 kg/m^3. In fresh water, the water line on a certain rectangular raft (8.8cm thick) moves 3.2 cm when a load of cargo is placed on it. How much will the same load of cargo move the water line in seawater? What is the pressure in fresh water ...
7. ### Physical Chemistry

The measured osmotic pressure of seawater is 25 atm at 273K. a.) What is the activity of water in seawater at 273 K? Take the partial molar volume of water in seawater to be 0.018 M-1. b.) The vapor pressure of pure water at 273 K is 4.6 torr. What is the vapor pressure of ...
8. ### PLEASE HELP! PHYSICAL CHEM

The measured osmotic pressure of seawater is 25 atm at 273K. a.) What is the activity of water in seawater at 273 K? Take the partial molar volume of water in seawater to be 0.018 M-1. b.) The vapor pressure of pure water at 273 K is 4.6 torr. What is the vapor pressure of ...
9. ### physics

Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its bulk modulus to be B(p) = B0 + 6.67(p −...
10. ### Chemistry

What is the concentration of Pb in mg/L , if you have 25 mg Pb in 5kg of seawater? (note: density of seawater is 1.025 kg/L)
11. ### Physics

Seawater has a bulk modulus of 2.34×109 N/m2. Its density at 5°C is 1030 kg/m3. What is the speed of sound through seawater at this temperature?
12. ### physics

Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its bulk modulus to be B(p) = B0 + 6.67(p −...
13. ### Chemistry

seawater contains approximately 3.5% NaCl by mass and has a density of 1.02g/mL. What volume of seawater contains 1.0 g of sodium? Please Help!
14. ### Physics

A submarine called the DeepView 66 is currently being built to take tourists on undersea tours along tropical coral reefs. According to the guidelines of the American Society of Mechanical Engineers, to be safe for human occupancy the submarine must be able to withstand a ...
15. ### chem

seawater contains approximately 3.5% NaCl by mass and has a density of 1.02 g/mL. What volume of seawater contains 1.0 g of sodium?
16. ### Chem

Seawater contains approximately 3.5% by mass and has a density of 1.02 g/mL. What volume of seawater contains 5.5g of sodium
17. ### Chem

A 1.0 mL sample of seawater is determined to contain 9.0×10-14 moles of dissolved gold. How many atoms of gold are in that volume of seawater?
18. ### Science

I'm having another problem. These multiple choice questions confuse me. Can you please help again. The density of seawater is either greater than freswater, increases with increasing depth in the oceans, changes with changing temperature, increases with increasing salinity, or...
19. ### College Chemistry

So i been trying to solve this question like for ever! so i hope you guys can help me , here is the question : the volume of a seawater on earth is about 330,000,000 mi3. if seawater is 3.5% sodium chloride by mass and has a density of 1.03g/mL, what is the approximate mass of...
20. ### Physics

What is the Buoyancy force exerted on a 180kg iron anchor when it is immersed in seawater? The density of iron is 7.8×103 kg/m3 and that of seawater is 1.03 × 103 kg/m3 .
21. ### Physics

What is the Buoyancy force exerted on a 180kg iron anchor when it is immersed in seawater? The density of iron is 7.8×103 kg/m3 and that of seawater is 1.03 × 103 kg/m3 .
22. ### science

How many liters of seawater are there under 1 meter square of sea surface if the water depth is 10 meters?
23. ### Physics

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.
24. ### Physics

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.
25. ### physics

An underwater sonar system uses mid-wavelength sound waves. These waves of 15 cm in wavelength propagate through seawater with an amplitude of 0.038 nm. Seawater has a density of 1030 kg/m3, and sound through seawater travels at a speed of 1530 m/s. What is the intensity level...
26. ### chemical oceanography

How many liters of seawater are there under 1 meter square of sea surface if the water depth is 10 meters?
27. ### science

I'm in 5th grade and I'm doing a science project on if seawater can be desalted by freezing... I tested three cups of seawater, each with different times in the freezer.. I have my control which is the seawater at room temperature... What do I chart on my bar graph... do I ...
28. ### Science

How can drinking water be obtained from seawater? Remember: seawater has a lot of materials in it besides salt.
29. ### Chemistry.

Please explain how to solve this question, and why you use your method to solve it. I am very very stuck. Gold is present in seawater to the exteen of 0.15mg/ton. Assume the density of the seaswater is 1.03g/mL and determine how many Au atoms could concievably be extracted ...
30. ### Chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 59.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Assuming ...
31. ### Chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Mc=? ...
32. ### chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Mc=? ...
33. ### chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Mc=? ...
34. ### Chem

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 41.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Assuming ...
35. ### physics

A steel ball is tossed into the ocean and comes to rest at a depth of 2.40 km. Find its fractional change in volume, assuming the density of seawater is 1020 kg/m3.
36. ### physics 2

An Ocean Thermal Energy Conversion (OTEC) power plant built in Hawaii in 1987 was de- signed to operate between the temperature limits of 86 F at the ocean surface and 41 F at a depth of 2100 ft. About 13 300 gallons per minute (gpm) of cold seawater was to be pumped from ...
37. ### Physics

21. The Mariana trench is located in the Pacific Ocean at a depth of about 10300 m below the surface of the water. The density of seawater is 1025 kg/m3. If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window...
38. ### Chemistry

The total volume of seawater is 1.5 times 10 to the twenty- first power L. Assume that seawater contains 3.1 percent sodium chloride by mass and that it's density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. ( 1 ton = 2000 lb. ; 1 lb. = ...
39. ### Physics

A certain diving bell for use in the ocean has a square window measuring 0.250 m on each side. The inside of the bell is pressurized and maintained at a pressure of 2.00 atm. The mass density of seawater is 1025 kg/m3. How deep can this bell be lowered before the vector sum of...
40. ### CHEM

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Mc=? ...
41. ### Math

A spherical vessel used for deep-sea exploration has a radius of 1.50 m and a mass of 1.20 × 104 kg. To dive, the vessel takes on mass in the form of seawater. Determine the mass the vessel must take on if it is to descend at a constant speed of 1.20 m/s, when the resistive ...
42. ### chemistry hw

SOMEONE PLEASE HELP AND CONFIRM THE RIGHT ANSWER FOR ME...I HAVE ONE MORE ATTEMPT TO THIS PROBLEM AND I NEED HELP!!!!! PLEASE!!!!!!!!!!!!!!!!!!!! THANKS! In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied ...
43. ### Chemistry

Assuming that seawater has a total ion concentration (aka colligative molarity) of 1.10 M conc, calculate how many liters of seawater are needed to produce 68.7 L of fresh water at 20 C with an applied pressure of 51.0 bar.
44. ### Physics

A wooden block floating in seawater has two thirds of its volume submerged. When the block is placed in mineral oil, 10% of its volume is submerged. ( a) Find the density of the wooden block. (The density of seawater is 1.024 g/cm3.) (b) Find the density of the mineral oil.
45. ### fluid

1. A vertical seawater lock is 4m wide and 2m high. The water level is 2 m above the base of the lock on one side, there being no water on the other side. The mass of the lock is 2.5 t and the coefficient of friction between the lock and the slides is 0.25. Determine the force...
46. ### Physics

A block of wood will sink 10 cm in freshwater. How far will it sink in seawater. The specific gravity of seawater is 1.025
47. ### Chemistry

A cublic meter of ocean water contains 6x10^-5 g of gold. If the total mass of the water in Earth's oceans is 4x10^20 kg, how many kilograms of gold are distributed throughout the ocean? (Assume that the density of seawater is 1 g/cm3.) How many literes of seawater would have ...
48. ### physics

A block of wood will sink 10 cm in freshwater. How far will it sink in seawater. The specific gravity of seawater is 1.025. I'm confused as to how to approach to problem
49. ### Physics

The maximum pressure most organisms can survive is about 1000 times atmospheric pressure. Only small, simple organisms such as tadpoles and bacteria can survive such high pressures. What then is the maximum depth at which these organisms can live under the sea (assuming that ...
50. ### Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 10300 m below the surface of the water. The density of seawater is 1025 kg/m3 (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window...
51. ### Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11800 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window...
52. ### science---1 question

help pls asap! 2) Which of the following is a pure substance? (1point) Chocolate milk Orange juice Seawater Hydrogen peroxide (H2O2) i first thought it was C (seawater) but is it D (H2O2)!??
53. ### Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
54. ### physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
55. ### physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
56. ### Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11500 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window...
57. ### Physics

- The Mariana trench is located in the Pacific Ocean at a depth of about 11000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what forces would the water exert on the vehicle’s observation ...
58. ### physics

An evacuated spherical diving bell containing a camera is in the ocean at a depth of 107 m. It has a flat, transparent, circular port with a diameter of 10.5 cm. Find the magnitude of the total force on the port. For the density of seawater use 1025 kg/m3.
59. ### chem.

How much heat would be required to warm Earth's oceans by 1.0 degree celsius ? Assume that the volume of Earth's oceans is 137x10^7 km^3 and that the density of seawater is 1.03 g/cm^3. Also assume that the heat capacity of seawater is the same as that of water. Earth's oceans...
60. ### chemistry

a sample of seawater has a density of 1.02kg/L and has the following ion in parts per million by mass, 19,000 Cl-. how do you find the molar concentration of the ion?
61. ### physics

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasound waves that travel at 1530 m/s in seawater. The time delay of an echo to the ocean floor below is 3 seconds. Find the depth of the water.
62. ### physics

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep in meters is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 6.8 s?
63. ### Chemistry

At a depth of 200 meters in Lake Nyos, the pressure of pure CO2, released from a volcanic vent is equal to the water pressure at this depth. P (pascals) = density * g * height. Density= 1000 kg/m^3, g= 9.8m/s^2. Using this Pascal pressure, convert it, and calculate the ...
64. ### Chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 58.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 C when the reverse osmosis stops? ___M ...
65. ### physics

Calculate the distance traveled in 6.00 s as a given sound moves through (a) water at 25.0ºC in m/s; (b) water at 25.0ºC in ft/s; (c) seawater at 25ºC in m/s; and (d) seawater at 25ºC in ft/s.
66. ### chemistry

The concentration of various cations in seawater in moles per liter are Na+ (0.46M); Mg2+ (0.056M); Ca2+ (0.01M); Al3+ (4x10^-7M); Fe3+ (2x10^-7M) If enough OH- ion is added to precipitate 50% of the Mg2+, what mass of precipitate will be obtained from one liter or seawater
67. ### physics

If a scuba diver descends too quickly into the sea, the internal pressure on each eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the difference between the external and internal pressures ...
68. ### chemistry / physics

the specific heat capacity of seawater is 3900 j/kg degrees celcius. how much energy is needed to heat 500g of seawater from 20 degrees celcius to 90 degrees celcius? if not i need to know how to work it out
69. ### Biology

Synthesis Question? Many parts of the world such as California, U.S., lack fresh water but have an abundance of salty seawater. Governments pay a lot of money to import fresh water for household use and crop irrigation. Why would it not be wise to save money by irrigating ...
70. ### physics

A scuba tank, when fully submerged, displaces 15.7 L of seawater. The tank itself has a mass of 13.9 kg and, when "full," contains 3.20 kg of air. The density of seawater is 1025 kg/m3. Assume that only its weight and the buoyant force act on the tank. Determine the magnitude ...
71. ### PHYS.

If the force on the tympanic membrane (eardrum) increases by about 1.50 N above the force from atmospheric pressure, the membrane can be damaged. When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? The eardrum is typically 8.20 ...
72. ### Physics

If the force on the tympanic membrane (eardrum) increases by about 1.50 N above the force from atmospheric pressure, the membrane can be damaged. When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? The eardrum is typically 8.20 ...
73. ### geography

calculate the freeboard of a 10-m thick iceberg in saltwater (seawater density of 1025 kg/ m^3)
74. ### physics

A person with a density of 980 kg/m3 floats in seawater of density 1025 kg/m3. What fraction of the person is submerged?
75. ### Physics

A diver can withstand a maximum pressure of 3x10^5 Pa. What maximum depth can he reach in seawater?
76. ### Physics

A driving bell can withstand a maximum pressure of 2.5 x 10^6 Pa. What maximum depth can the ball reach in seawater?
77. ### fluid mechanics

a block has a mass of 400kg in air when submerged in seawater it weighs 2943N. what is the specific gravity of the block?
78. ### Physics

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel at 1530 m/s in seawater. Show that when the time delay of an echo to the ocean floor below is 4 s, the depth of the water is 3060 m. d=vt=1530ms x 2 =3060 not sure if i did it correct ...
79. ### chem

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth¡¯s oceans, because of their high heat capacity, can absorb heat and therefore act to slow down global ...
80. ### College Physics

A raft is made of wood with a density of 404 kg/m^3. It is 42 cm thick and its square area is 3.0x3.0 m^2. It is floating in seawater (density = 1025 kg/m^3). How many people of 68 kilogram can the raft hold before they start getting their feet wet?
81. ### Chemistry Help?

30, A: One atmospheric compound is responsible (after it has dissolved in water) for both the general acidity of normal rainwater and the acidity of much soil. What is this compound? 30, B: Is this compound put into the atmosphere solely by pollution? 30, C: Why doesn’t this...
82. ### physical science

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 6 s? (sound speed)* (echo time) = 2 * depth depth = (...
83. ### chemistry

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth's oceans, because of their high heat capacity, can absorb heat and therefore act to slow down global warming. ...
84. ### Physics

A cylindrical diving bell 5 m in diameter and 10 m tall with an open bottom is submerged to a depth of 150 m in the ocean. The temperature of the air at the surface is 20 degrees Celsius, and the air temp 150 m down is 2 degrees Celsius. The density of seawater is 1025 kg/m^3...
85. ### physics

How deep can a snorkel diver dive if the maximum gauge pressure on the thorax cannot exceed 10.9 kPa? Hint: density of seawater = 1.015g/cm3
86. ### oceanography

What is the relative density of seawater. granite rock. basaltic rock. mantle
87. ### Science

Which mixture will separate quickly when left uncovered out in the open? A. Air B. Cola C. Concrete D. Seawater I suggest you think about this and post your thoughts. Do you think air separataes upon standing? Do you think a cola will separate? What about concrete.What about ...
88. ### Precalc Translations

Let T(d) be the temperature of the seawater in the Mariana Trench d meters below the surface. Find a formula for p(x), the temperature x mm below the surface Insert 1 for coefficients that do not change and 0 for shifts that are not necessary My answers p(x) = 1, T( ) x - 0...
89. ### physics

An eardrum can burst when the pressure exceeds one atmosphere and the pressure inside the ear fails to equalize. Determine the depth in seawater when this pressure would be reached. (pressure of ocean = 1.03*10^3 kg/m^3)
90. ### Fluid Mechanics

it is estimated that it 90 percent of an iceberg's volume is below the surface, while only 10 percent is visible above the surface. for seawater with a density of 1025kg/m^3, estimate the density of the iceberg.
91. ### Science

if the submaine has an area of 4.5m X 2.3m and is 304.8m below sea level. what is the pressure exerted on the submaine by the water above it? And that the density of the seawater is 113.4 kg/m2
92. ### physics

A submarine is constructed so that it can safely withstand a pressure of 1.6 x 107 Pa. How deep may this submarine descend in the ocean if the average density of seawater is 1025 kg/m3.
93. ### Chemistry

Seawater contains 0.412 g Ca per kilogram of water. What is the number of moles of Ca per kilogram of water? What is the concentration of Ca measured in ppm? For the first question, it's changing the grams of Ca to moles of Ca. Is it .412 g / 39 g = .0105 moles. For the second...
94. ### chemistry

how many moles of gold are there in 1.00 L of seawater if there are 1.50^17 atoms of gold in the sample?
95. ### Physics. Please!!

If the force on the tympanic membrane (eardrum) increases by about 1.50 N above the force from atmospheric pressure, the membrane can be damaged. When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? The eardrum is typically 8.20 ...
96. ### Chemistry

If a solution of sodium phosphate, Na3PO4, is poured into seawater, precipitates of calcium phosphate and magnesium phosphate are formed. (Magnesium and calcium ions are among the principle ions found in seawater.) Write net ionic reactions for the reactions. Include physical ...
97. ### physics

A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in pressure for a diver who ...
98. ### science I REALLY NEED HELP

Say a submaine has an area of 4.5m X 2.3m and it is 304.8m below sea level. And that the density of the seawater is 113.4 kg/m2 what is the pressure exerted on the submaine by the water above it?
99. ### chemistry

how much heat would be required to warm the earth's oceans by 1 degree celcius if the volume of the earths oceans is 137x100000000km3 and the density of the seawater is 1.03g/cm3
100. ### science

A dolphin swimming in seawater at a temperature of 25degree Celsius emits a sound directed toward the bottom of the ocean 150 meters below. what period of time passes befor it hears an echo?