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Which of the following would be considered a solution ? A salt in the sugar bowl B sugar added to water C oil added to water D any fat-soluble substance mixed with water soluble substance

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Which of the following would be considered a solution ? A salt in the sugar bowl B sugar added to water C oil added to water D any fat-soluble substance mixed with water soluble substance

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What kind of change occurs when salt dissolves in water a.) solution change b.) physical change c.) chemical change d.) substance change

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What kind of change occurs when salt dissolves in water a.) solution change b.) physical change c.) chemical change d.) substance change

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What kind of experiment would test the effects of changing salt concentrations on regeneration of brain cells in Alzheimer patients?

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Answered by answersmine AT 22/10/2019 – 02:57 AM

A change in osmolarity of the solution where the cell line can be placed can be used for the same. Varying osmolarity solutions should be used and the effect of different salt concentrations can be sensed by observed shrinking/swelling of the cells, in different salt solutions. 

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Which two Ottoman commodities in great demand during Suleiman’s time? A) tobacco and cane sugar B) copper tools and salt C) silk rugs and colorful tiles D ) spices and fragrant rice

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B) COPPOR TOOLS AND SALT – this is most likely to be the Ottoman commodities because salt found in great quantities in Africa is close to the Mediterranean, which the Ottomans would have controlled

The answers are not….
A – tobacco and cane sugar come primarily from the americas
C – silk rugs and colorful tiles are mainly Persian and East Asian exports
D) – spices and fragrant rice would have mainly come from India at the time

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PLEASE HELP!!!!! Which of the following state capitals is located on the east coast of the United States? a. Salt Lake City, Utah b. Richmond, Virginia c. Olympia, Washington d. Columbus, Ohio

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PLEASE HELP!!!!! Which of the following state capitals is located on the east coast of the United States? a. Salt Lake City, Utah b. Richmond, Virginia c. Olympia, Washington d. Columbus, Ohio

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Consider the hydrate FeSO4 • 7H2O. What is the molar mass of this hydrate? g/mol What is the molar mass of the anhydrous salt FeSO4? g/mol What is the molar mass of water in the hydrate? g/mol

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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In a solution of salt and water, if the water can’t dissolve anymore salt, the solution is described as which of the following? a. soluble b. supersaturated c. unsaturated d. saturated

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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Annie has just eaten a large order of heavily salted french fries, some pickled eggs, and some cheese. how will consuming this much salt affect her physiology?

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Annie has just eaten a large order of heavily salted french fries, some pickled eggs, and some cheese. how will consuming this much salt affect her physiology?

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Read the excerpt from “The Most Dangerous Game.” He struggled up to the surface and tried to cry out, but the wash from the speeding yacht slapped him in the face and the salt water in his open mouth made him gag and strangle. Desperately he struck out with strong strokes after the receding lights of the yacht, but he stopped before he had swum fifty feet. A certain cool-headedness had come to him; it was not the first time he had been in a tight place. There was a chance that his cries could be heard by someone aboard the yacht, but that chance was slender, and grew more slender as the yacht raced on. He wrestled himself out of his clothes, and shouted with all his power. The lights of the yacht became faint and ever-vanishing fireflies; then they were blotted out entirely by the night. Rainsford remembered the shots. They had come from the right, and doggedly he swam in that direction, swimming with slow, deliberate strokes, conserving his strength. For a seemingly endless time he fought the sea. He began to count his strokes; he could do possibly a hundred more and then— What details from the narration show that Rainsford is a rational individual who does well in moments of danger? Check all that apply. 1) He struggled up to the surface and tried to cry out 2) Desperately he struck out with strong strokes after the receding lights of the yacht 3) A certain cool-headedness had come to him; 4) There was a chance that his cries could be heard by someone aboard the yacht 5)[D]oggedly he swam in that direction, swimming with slow, deliberate strokes, conserving his strength.

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C) A certain cool-headedness had come to him

E) [D]oggedly he swam in that direction, swimming with slow, deliberate strokes, conserving his strength

Both of these sentences show that Rainsford can easily handle stress. The first sentence says that he was overcome by “cool-headedness”. In the second stanza the speaker uses words like “doggedly, slow, deliberate and conserving his strength.” In all of these instances Rainsford was in danger,; however, he was able to keep calm and think clearly about what he should do next.

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The probabilities of the orphaned pets in six cities’ animal shelters being different types of animals are given in the table. If a randomly selected orphaned pet in a St. Louis animal shelter is a dog, what is the probability that it is a mastiff? City Cat Dog−Lhasa Apso Dog−Mastiff Dog−Chihuahua Dog−Collie Austin 24.5% 2.76% 2.86% 3.44% 2.65% Baltimore 19.9% 3.37% 3.22% 3.31% 2.85% Charlotte 33.7% 3.25% 3.17% 2.89% 3.33% St. Louis 43.8% 2.65% 2.46% 3.67% 2.91% Salt Lake City 28.9% 2.85% 2.78% 2.96% 2.46% Orlando 37.6% 3.33% 3.41% 3.45% 2.78% Total 22.9% 2.91% 2.68% 3.09% 2.58% 15.30% 18.15% 21.04% 21.84%

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Answer:

Option: B is the correct answer.

The window size that display all the points are:

0 ≤x ≤ 20  ;   0 ≤ y ≤ 60

Step-by-step explanation:

We are given a table of values as:

            x                       y

             2                      5

             5                      16

             6                      20

             10                     29  

             12                     36

             17                     53

Clearly from the set of given x and y values we could observe that the minimum value attained by x is 2 and maximum value attained by x is 17.

Hence, the all the x-values lie in the interval:

           0 ≤ x ≤ 20

Similarly,  we could observe that the minimum value attained by y is 5 and maximum value attained by y is 53.

Hence, the all the y-values lie in the interval:

           0 ≤ y ≤ 60

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How is an oxbow lake formed? a.An oxbow lake is formed when a lake shrinks due to erosion. b.An oxbow lake is formed when the wide bend of a river is cut off. c.An oxbow lake is formed when high concentrations of salt are present in lakes. d.An oxbow lake is formed when a dam or levee is built on a river.?

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Answer:

The financial reforms were most successful because they established lasting methods to protect free enterprise.

Explanation:

Progressism refers to a set of philosophical, ethical, and economic doctrines based on the idea that progress, understood as scientific, technological, economic and social advancement, is vital to the perfection of the human condition.

The great advance of the idea of ​​progressive reforms in Europe occurred with the Enlightenment, when social thinkers and philosophers began to realize that people themselves, instead of gods, can change society and their way of life. The Enlightenment believed that progress had universal application in all societies and that these ideas would spread from Europe to the whole world.

“Modernity” or “modernization” was the key word of the idea of ​​progressive reforms advocated by the classical liberals in the nineteenth and twentieth centuries, which proposed the rapid modernization of the economy and society as a solution to remove the traditional barriers to free enterprise and freedom movement of people.

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Badwater Basin in Death Valley is covered with white salt crystals. What is likely to be true of this area? A.The white salt crystals have a high albedo. B.The white salt crystals are immune to insolation. C.The white salt crystals have no heat capacity. D.The white salt crystals absorb most radiation.

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Answer:

Each parent had at least one allele for white petals.

Explanation:

According to the law of inheritance, it is necessary that each offspring must inherit one allele from each of its parents for a given gene.

Since in the given question, a rose plant inherits a white flower petal allele, it is necessary that the plant must have an inherited one allele from each parent, therefore, the two parents must have had at least one allele for white petal.

The cross is shown below ,

W—> red petal

w —-> white petal

Atleast one allele => Ww X Ww —> WW Ww Ww ww

More than one allele => ww X ww —-> ww  

Here ww is the offpsring with white petals.

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What are the reactants in a neutralization reaction? two elements an acid and a base an element and a compound a salt and water

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What are the reactants in a neutralization reaction? two elements an acid and a base an element and a compound a salt and water

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Salt form by hno3 + ba(oh)2

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Salt form by hno3 + ba(oh)2

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ʕ•ᴥ•ʔ Which type of reaction occurs between an acid and a base and results in the formation of a salt and water? ʕ•ᴥ•ʔ A. acid-dissociation reaction B. strong acid-weak base reaction C. base-dissociation reaction D. neutralization reaction

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Answer : The mole ratio for aluminium chloride to chlorine is, 2 : 3

Explanation :

The given unbalanced chemical reaction is :

AlCl_3+Br_2rightarrow AlBr_3+Cl_2

First we have to balance the chemical reaction.

In order to balance the chemical reaction, the coefficient 2 is put before AlCl_3text{ and }AlBr_3 and the coefficient 3 is put before Cl_2text{ and }Br_2.

The given balanced chemical reaction will be :

2AlCl_3+3Br_2rightarrow 2AlBr_3+3Cl_2

By the stoichiometry we can say that, 2 moles of AlCl_3 react with 3 moles of Br_2 to give 2 moles of AlBr_3 and 3 moles of Cl_2 as a product.

That means,

The mole ratio between the AlCl_3:Br_2:AlBr_3:Cl_2 are 2:3:2:3 respectively.

Thus, the mole ratio for aluminium chloride to chlorine is, 2 : 3

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“Ocean currents result from two processes: the wind on the surface of the water and variation in water temperature and density. These ocean currents are convection currents. Under the tropical sun, water at the equator warms up. At the frigid poles, seawater cools down and sinks. Convection cells are set up with warm water moving along the surface to the poles and deep cold water flowing toward the equator. Changes in the density of ocean waters, caused by changes in salinity re also important in the formation of ocean currents. Ice formation near the poles leaves salt behind in the remaining water. This denser, more saline water sinks, creating its own density-driven currents. Surface winds also set surface currents into motion.” Can you pick the statements that accurately describe oceans currents? Check all the statements that are true. ‘Both the wind and solar energy influence ocean currents.’ ‘Warm water flows away from the equator toward the poles.’ ‘As the salinity of ocean water increases, density decreases.’ ‘Cold water sinks, warm water rises, creating a convection current.’

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Answer: The rainfall increases the mineral content of ocean water.

Explanation:

The minerals in the oceanic water are added by the rainfall through surface runoff. It is a phenomena in which the large volume free flowing water flows over the surface of the soil. This water is not absorbed by the soil instead it takes away along with it all surface materials like chemical fertilizers, soil, sediments, inorganic and organic minerals and deposit them to the water body (ocean, river or others).

Thus this can be said that rainfall increases the mineral content of the ocean water.  

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Why does salad wilts as soon as salt is added?

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1. larger size in plant cells is matched with vacuole

The central vacuole of plant cells and fungi has a homeostatic function, ensuring cell turgor, and its membrane, the tonoplast, has ion pumps. It contains water, carbohydrates, organic and inorganic ions and pigments. Some central vacuoles are also sites of accumulation of reserves or of particular substances, sometimes toxic (latex, opium …) even of waste, which confers on them a role of detoxification of the cell.

2. salt and water base is matched with cytoplasm

Eukaryotic cells, bounded by a plasma membrane, contain:

* A Nucleus,

* A cytoplasm, the biological material contained between the plasma membrane (cell membrane) and the nuclear envelope. It is composed by:

– hyaloplasm,

– morphoplasm (organelles).

3. grainy appearance is matched with rough endoplasmic reticulum

The rough endoplasmic reticulum (RER) or granular (REG) is an organelle present in eukaryotic cells. It is one of two types of endoplasmic reticulum, characterized by the presence of ribosomes that give it a rough appearance. Depending on the cell type, the REG will take different names like at the level of neurons: Nissl’s body.

4. permeable and flexible is matched with cell membrane

All cells are surrounded by a cell membrane or plasma membrane composed of lipids, proteins and carbohydrates. The contents of the cell can not escape and is retained in its place by this membrane.

The cell must be able to trade with the outside. It must, for example, bring in salts, nutrients, water and must be able to get rid of its waste, usually acidic.

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Kylie has two glasses with equal volumes of pure water. She adds 40 g of sugar to one of the glasses of water and 40 g of salt to the other. When sugar is dissolved in water, it does not change the number of ions present. When salt is dissolved in water, however, the number of ions significantly increases. Which of the following is true about the electrical conductivity of Kylie's two solutions? A)The solution of sugar water will have a higher conductivity than the solution of salt water. B) Pure water will have a higher conductivity than both the sugar water and the salt water. C) The solution of salt water will have a higher conductivity than the solution of sugar water. D) The solution of salt water and the solution of sugar water will have the exact same conductivity.

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Kylie has two glasses with equal volumes of pure water. She adds 40 g of sugar to one of the glasses of water and 40 g of salt to the other. When sugar is dissolved in water, it does not change the number of ions present. When salt is dissolved in water, however, the number of ions significantly increases. Which of the following is true about the electrical conductivity of Kylie’s two solutions? A)The solution of sugar water will have a higher conductivity than the solution of salt water. B) Pure water will have a higher conductivity than both the sugar water and the salt water. C) The solution of salt water will have a higher conductivity than the solution of sugar water. D) The solution of salt water and the solution of sugar water will have the exact same conductivity.

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