Answer and Explanation:
D I believe..
Answer: The saltiest locations in the ocean are the regions where evaporation is highest or in large bodies of water where there is no outlet into the ocean. The saltiest ocean water is in the Red Sea and in the Persian Gulf region (around 40‰) due to very high evaporation and little fresh water inflow.
Explanation: Sea water salinity is expressed as a ratio of salt (in grams) to liter of water. In sea water there is typically close to 35 grams of dissolved salts in each liter. It is written as 35‰ The normal range of ocean salinity ranges between 33-37 grams per liter (33‰ - 37‰).But as in weather, where there are areas of high and low pressure, there are areas of high and low salinity. Of the five ocean basins, the Atlantic Ocean is the saltiest. On average, there is a distinct decrease of salinity near the equator and at both poles, although for different reasons.Near the equator, the tropics receive the most rain on a consistent basis. As a result, the fresh water falling into the ocean helps decrease the salinity of the surface water in that region. As one move toward the poles, the region of rain decreases and with less rain and more sunshine, evaporation increases.Fresh water, in the form of water vapor, moves from the ocean to the atmosphere through evaporation causing the higher salinity. Toward the poles, fresh water from melting ice decreases the surface salinity once again. Water has a unique property. As the temperature decreases to 40°F (4°C) the molecules slow, water contracts and the density increases. Below 40°F (4°C) the molecules begin to bond to each other and as they do, the water begins to expand again, decreasing the density. At 32°F (0°C) all molecules are locked into a crystalline structure with a resulting nine percent expansion in size. This expansion, and corresponding decrease in density, is the reason ice floats. The amount of salt in sea water also determines the temperature at which sea water freezes. Adding salt to water lowers the freezing temperature. Water with a salinity of 17‰ freezes at about 30°F (-1°C) and 35‰ water freezes at about 28.5°F (-2°C). Yet, despite the saltiness of the ocean, sea ice contains very little salt, about a tenth of the amount of salt that sea water has. This is because ice will not incorporate sea salt into its crystal structure. Therefore, sea ice is actually drinkable. The temperature and salinity of the sea water also help determine its density. As the temperature of sea water decreases the density also increases. Also, as the salt content of sea water increases, so does its density. This makes the density of sea water, unlike fresh water, below the freezing point. So, in situations of sea ice formation, the salinity, and therefore the density of the underlying water continues to increase well after an area is iced over.
In the "Average Salinity" map (below), it shows the lowest salinity in the polar regions. Bear in mind, this image depicts surface salinity only. The surface salinity is lower in the polar regions than in the tropical regions due to melting each summer. However, each winter below the ocean surface, the increased salinity in the water due to ice formation, causes the water below the ice to sink and that sinking motion governs the motion of the ocean's deep-water currents.
calculate the amount of magnesium that will react with 16.0 g of oxygen to produce 40.5 g of magnesium oxide.
Answer:
24.3g
Explanation:
Mr of Oxygen = 16 (15.999)
Mr of Magnesium = 24.3 (24.305)
Mass / Mr = moles
16.0g / 16 = 1
Mr x moles = Mass
24.3 x 1 = 24.3g
which of the following correctly represents the radioactive decay of cesium-137?
22. A student carefully measures a certain quantity of four different substances
into trays that will be used in a laboratory exercise. Which of these trays would
contain the largest number of atoms?
Sample
Mass of tray
with sample
Water
Mass of
empty tray
37.86g
36.59g
37.418
55.88g
Table Salt (NaCl)
Copper Wire
95.03g
100.96g
245.20g
Lead Shot
38.08g
Answer:
Water
Explanation:
The substance that has the highest number of moles also has the highest number of atoms.
The number of atoms of a substance can be calculated using the Avogadro's number. This number gives the number of elementary entities such as atoms, molecules and ions in one mole of a substance.
All you need to do is to find out which substance has the highest number of moles. This substance will also have the highest number of atoms present.
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How many carbon atoms are in 15.6 kg of acetone? acetone is ch3coch3. the density of acetone is 1.30 g/ml?
what is the total number of moles of KCIO, needed to produce 6 mol of 02
Answer:
4 moles of potassium chlorate must be used to produce 6 moles of oxygen gas.
Explanation:
Name:
1. The nucleus is the part of the atom that
A consist mostly of empty space
B.
has a negative charge
Coccupies most of the atom's total volume
D. contains most of the atom's total mass
Answer:
D.
Explanation:
There are three types of particles within atoms: protons, neutrons, and electrons.
Electrons have essentially no mass and orbit the nucleus in various energy levels.
Protons and neutrons have mass and are both found within the nucleus of the atom.
Which energy source can be renewed in less than a week?
a ton of coal
a barrel of oil
the charge on a solar battery cell
the ethanol produced by an acre of corn
Answer:
a charge on a solar battery cell
What is it about the structure of magnesium atoms that makes them react more slowly than sodium atoms?
Answer:
A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.
Explanation:
I really need help on this question! Thank you so much!
Answer:
A. Empirical formula => C₂H₄O
B. Molecular formula => C₄H₈O₂
Explanation:
From the question given above, the following data were obtained:
Mass of C = 0.273 g
Mass of H = 0.046 g
Mass of O = 0.182 g
Molar mass of compound = 88 g/mol
A. Determination of the empirical formula of the compound.
C = 0.273 g
H = 0.046 g
O = 0.182 g
Divide by their molar mass
C = 0.273 /12 = 0.023
H = 0.046 /1 = 0.046
O = 0.182 /16 = 0.011
Divide by the smallest
C = 0.023 / 0.011 = 2
H = 0.046 / 0.011 = 4
O = 0.011 / 0.011 = 1
Thus, the empirical formula of the compound is C₂H₄O
B. Determination of the molecular formula of the compound.
Empirical formula = C₂H₄O
Molar mass of compound = 88 g/mol
Molecular formula =?
Molecular formula = [C₂H₄O]ₙ
[C₂H₄O]ₙ = 88
[(12×2) + (4×1) + 16]n = 88
[24 + 4 + 16]n = 88
44n = 88
Divide both side by 44
n = 88 / 44
n = 2
Molecular formula = [C₂H₄O]ₙ
Molecular formula = [C₂H₄O]₂
Molecular formula = C₄H₈O₂
CAN SOMEONE PLEASE HELP ME OUT WITH THESE 2 QUESTIONS? ILL GIVE YOU A GOOD RATING!!
1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.
Answer:
1. Solid
2. atom
3. faster and farther apart
4.more freely moving than a solid
5.The amount of matte in an object
Explanation:
Answer:
1. Solid
2. Atom
3. Faster and farther apart
4. More freely moving than a solid
5. The amount of matter in an object.
How many molecules are in 83.2 g of chlorine gas (C12)?
Answer:
3.2
Explanation:
dont trust me
what did the law of octaves state about the elements
Law of octaves states that when the elements are arranged in ascending order of atomic mass, every eighth element has comparable properties.
What are the characteristics of law of octaves ?Features of law of octaves -:
Newland Octaves arranged the known 62 elements into 8 groups of 8 each. The elements were in increasing order of atomic weight.Every element shared properties with the 8th element after it.Some limitations were made into this -:
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The law of octaves state about the elements that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.
What is octaves rule?when the elements are arranged in the increasing order of atomic mass, every eighth element has comparable properties and that was the first time an atomic number was introduced to each element of the periodic table.
To become the stable according to rule element must complete it octave otherwise it cannot be considered the stable one.
Therefore, law of octaves state about the elements that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.
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Which is true of cell differentiation?
A. Tissues produce various stem cells.
B. Stem cells become different types of cells.
C. Unicellular organisms become multicellular
Answer:
B
Explanation:
When stem cells differentiate, they are different (almost like mutation).
Answer:
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will mark brainlest 1) Now that you have studied the facts about the Severn River, you are ready to make a decision. What questions would you want answered if you were to determine whether to build a tidal power plant at the Severn River?
Answer:
The questions I would like to answer are:
Will the productivity of the river severn offset the cost of installing the plant?
Is it possible to build a dam on site?
Is it possible to establish submerged turbines in this location?
How would human life and nature be impacted by the plant?
Explanation:
Tidal power plants are signals that use tidal energy to generate electricity. The installation of this type of plant is quite expensive and involves the establishment of dams on site to take advantage of the differences between high and low tides and the establishment of submerged turbines to take advantage of sea currents.
To decide whether I would decide to build a tidal plant on the Severn River, I would need to evaluate a few things to make sure that the project is viable. For that I would ask myself some questions like:
Will the productivity of the river severn offset the cost of installing the plant? (If the installation costs are greater than the capacity of this river to promote high generation of electricity, it would be better to abandon the project)
Is it possible to build a dam on site? Is it possible to establish submerged turbines in this location? (It is necessary to consider the physical and chemical characteristics of the place to know if it is possible to install these two equipment and in a way that they work efficiently)
How would human life and nature be impacted by the plant? (Projects like this include major environmental and social impacts. These impacts must be analyzed and ways to mitigate them must be considered and included in the project.)
What kind of reaction is photosynthesis?
Answer:
endothermic reaction
Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.
Explanation: hope this helps u!
Answer:
Endothermic reaction I believe.
Explanation:
It can't occur without the energy from the sun. The light is absorbed by the green pigment called chlorophyll which is in the leaves of the plant.
What is the main process by which water moves from land to the atmosphere?
Answer:
isn't that evaporation if not you can just delete my answer-
Explanation:
What Reactants are needed for photosynthesis?
Glucose and Oxygen
Carbon Dioxide and Water
Water and Oxygen
Carbon Dioxide and Oxygen
Answer:
Carbon dioxide and water.
Explanation:
If there isn't carbon dioxide, photosynthesis wouldn't happen as carbon dioxide is needed to transfer into the plant and after that the oxygen travels into the surroundings from the plant. There isn't any water, the plant wouldn't be able to make food called glucose.
8
This wasp was viewed under a microscope with a 40x objective lens and a 10x
eyepiece lens.
What was the total magnification
help its for my assessment
25 points
Answer:
400x
Explanation:
magnification=magnification of objective lens*magnification of eyepiece lens
m=40*10
m=400x
Jennifer has a mass of 60 Kg and
is accelerating down the hill at a
rate of 3 m/s/s. What is the force
acting on Jennifer?
Answer:
the force acting on Jennifer is 180 N
Explanation:
The computation of the force acting on Jennifer is shown below:
As we know that
Force = mass × acceleration
= 60 kg × 3 m/s
= 180 N
hence, the force acting on Jennifer is 180 N
We simply applied the above formula
1.
what can noble gases be used for?
2.
what is a vertical column called in the periodic table
3.
what is the horizontal column in the periodic table
Answer:
1. They are mostly used to protect materials and prevent chemical reactions.
2.These are Groups
3. I guess it is Rows
What is the man’s weight on Mars where the acceleration due to gravity is 3.7 m/s2?
Answer:
6.39 × 10^23 kg (0.107 M⊕)
Explanation:
what happens to iron if it's left in
moisture for few days?
Answer:
The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
Explanation:
this is what will happen in water
can someone help me please
Answer:
it's d
Explanation:
I took the test and got it right
A mole of carbon has the same number of atoms as a mole of beryllium.
O True
False
Answer:
False.
Explanation:
Carbon = 12
Beryllium = 9
good luck, i hope this helps :)
collect some of chalk, limestone, marble, eggshells and seashells and mix them with a dilute acid. pass the gas produced into a small amount of limewater to test for carbon dioxide. is carbon dioxide gas produced in each case.
Explanation:
Yes carbon dioxide found in each case
តើកាបូនមានវ៉ាឡង់ប៉ុន្មាន
Answer:
uuuhhh?
Explanation:
what’s the difference between 2o and o(subscript 2)?
Answer:
2O is an atom while O2 Is a molecule
What affects both deep water and surface currents in the ocean?
Answer:
These currents are on the ocean's surface and in its depths, flowing both locally and globally. Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth's rotation results in the Coriolis effect which also influences ocean currents. -
Answer: The Coriolis effect
Explanation:
20 points to anybody that can answer all 3 of these questions
Answer:
1. 2AgO2 --> 4 Ag + O2
2. Decomposition
3. 2NaBr + CaF2 --> 2NaF + CaBr2
Explanation: