What is the change in vapor pressure when 74.60 g fructose, C6H12O6, are added to 185.5 g water (H2O) at 298 K (vapor pressure of pure water at 298 K

Answer:

C. the substance in which the solute dissolves

Explanation:

There are two terms in this... the solute and the solvent. The way I learned how to remember this is with a little pirate analogy: The loot (stolen treasure) always goes in the vent. So, the soLUTE goes in the solVENT.

Grams per liter of sulfur

To determine the concentration in terms of grams per liter of sulfur, we need to consider the atomic mass of sulfur in the sulfate ion (SO4^2-). The atomic mass of sulfur (S) is approximately 32.06 g/mol.

The molar ratio between sulfate and sulfur is 1:1, which means that one sulfate ion contains one sulfur atom. Therefore, the concentration of sulfur in grams per liter is also 1.5 g/L.

Molar concentration of sulfate:

To calculate the molar concentration of sulfate, we need to convert the given mass concentration (1.5 g/L) to moles per liter. The molar mass of sulfate (SO4^2-) is approximately 96.06 g/mol.

Molar concentration (in mol/L) = Mass concentration (in g/L) / Molar mass (in g/mol)

Molar concentration of sulfate = 1.5 g/L / 96.06 g/mol ≈ 0.0156 mol/L

Therefore, the molar concentration of sulfate in the estuarine water sample is approximately 0.0156 mol/L.

Normality:

Normality is a measure of the concentration of reactive species in a solution, taking into account the number of equivalents of the species. In the case of sulfate (SO4^2-), it has a charge of 2-.

Normality (in N) = Molar concentration (in mol/L) × Equivalent factor

Since sulfate has a charge of 2-, the equivalent factor is 2. Therefore, the normality of the sulfate ion is:

Normality = 0.0156 mol/L × 2 = 0.0312 N

Hence, the normality of the sulfate in the estuarine water sample is approximately 0.0312 N.

Parts per million (ppm) sulfate:

Parts per million is a ratio of the mass of a solute to the mass of the solution, multiplied by one million.

Parts per million (ppm) = (Mass of solute / Mass of solution) × 10^6

In this case, the mass of solute is given as 1.5 g/L (since sulfate concentration is 1.5 g/L). The mass of the solution is assumed to be equal to 1 liter.

Parts per million sulfate = (1.5 g/L / 1 g/L) × 10^6 = 1,500,000 ppm

Therefore, the concentration of sulfate in the estuarine water sample is approximately 1,500,000 ppm.

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Answer:

The independent variable: Diet

The dependent  variable: Rats' mass

Explanation:

The independent variable in an experiment is defined as the variable that can be changed or controlled to find its impact on the dependent variable. The dependent variable is defined as the variable that is influenced by the change in the independent variable.

In the given experiment diet is the independent variable as its quantity is changing in different weeks and affecting the mass of rats' and mass of rats' is the  dependent  variable as it is measured by the influence of diet.

Hence, the correct answer is:

The independent variable: Diet

The dependent  variable: Rats' mass

The independent variable is the diet while the dependent  variable is rats'

mass.

An independent variable in an experiment usually undergoes some changes

in order to measure the impact they have on the dependent variable. A

dependent variable as the name implies relies on changes in the

independent variable to measure it.

In this scenario, the measured changes in diet exerts a positive or negative  

effect on the mass of the rats which is why the diet is the independent

variable and the dependent variable is the rats' mass.

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The size of the container or the region of space that an atom inhabits influences its behaviour.

The atom operates classically when the container or area of space is large enough, which means that its behaviour can be explained using classical mechanics. when the container or region of space becomes very small quantum phenomena dominate the behaviour of the atom, and classical mechanics no longer suffices to describe its behaviour.

Because the size of a 1 cm³ box is considerably greater than the size of a helium atom, classical mechanics governs the atom's behaviour. The atom's location and momentum can be precisely calculated, and its behaviour can be predicted using classical mechanics.

On the other hand, the size of a 1 nm³ box is much less than the size of a helium atom. In this instance, quantum processes such as wave-particle duality and the uncertainty principle govern atom behaviour. The atom's location and momentum cannot be determined precisely, and its behaviour cannot be predicted using classical mechanics.

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Yes, the argon atoms exert a greater pressure on the walls of the container because they are more massive.

Argon is a noble gas that has a mass of approximately 40 atomic mass units, which is significantly greater than the mass of lighter gases such as hydrogen and helium.The pressure exerted by a gas in a container is directly proportional to the number of gas molecules present and the average kinetic energy of those molecules.

The mass of gas molecules also has a direct impact on the pressure exerted by a gas.When argon molecules are present in a container, they collide more frequently with the walls of the container than lighter molecules such as hydrogen or helium.

These frequent collisions result in a greater pressure being exerted by the argon on the walls of the container than the lighter gases, given the same conditions of temperature and volume.

Thus, since the argon atoms are more massive, they exert a greater pressure on the walls of the container.

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A maximum of two electrons will be placed in 1s first. With a maximum of two electrons, 2s will then be filled. With a maximum of 6 electrons, 2p will then be filled.

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Answer:

DNA contains four nitrogen bases: adenine, thiamine, guanine and cytosine. Adenine and thymine pair, and guanine and cytosine pair.

Explanation:

In combination, nitrogen is found in the rain and soil as ammonia and ammonium salts and in seawater as ammonium (NH4+), nitrite (NO2−), and nitrate (NO3−) ions...

Answer:

1. three-dimensional bonding

Diamond

2. Hardest natural substance

diamond

3. Used as lubricant

Graphite

4. nonconductor

Diamond

5. Weak, planar bonds

Graphite

6.Carbon black or soot

Amorphous

Explanation;

sorry im late, hopefully this can help somebody :)

The question that will best help the student to classify the material is; "is the material malleable or ductile?"

Generally, materials can be classified as metals or non metals. There are properties that are particular to metals and there are properties that are particular to nonmetals and these properties can be used to identify each one of the materials.

The question that will best help the student to classify the material is; "is the material malleable or ductile?" These metallic properties.

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Missing parts;

A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material? A. Is the material malleable or ductile? B. Does the material feel hard to the touch? C. Will the material float in water? D. Does the material feel rough or smooth?

There are several functional groups that are found in organic molecules, such as hydroxyl group, carbonyl group, carboxyl group, amino group and phosphate group.

One important functional group is the hydroxyl group, which is represented by the formula -OH. This group is found in alcohols, such as ethanol, and is important for their solubility in water and ability to form hydrogen bonds. Another functional group is the carbonyl group, which is represented by the formula -C=O. This group is found in aldehydes and ketones, and is important for their reactivity in chemical reactions. The carboxyl group, represented by the formula -COOH, is found in carboxylic acids and is important for their acidic properties.
The amino group, represented by the formula \(-NH_2\), is found in amino acids and is important for their ability to form peptide bonds and create proteins. Finally, the phosphate group, represented by the formula \(-PO_4\), is found in nucleotides and is important for their role in DNA and RNA synthesis.

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Answer:

1. definition of a problem

2.solution to the problem

3.the result

Explanation:

Hope this helps

The three (3) must haves of a hypothesis include the following;

A hypothesis can be defined as a testable explanation for an  observation or a scientific problem. Thus, a hypothesis is a type of statement that is typically considered to be either tentative or an educated guess.

An example of a hypothesis is saying;

Generally, the three (3) must haves of a hypothesis include the following;

1. A hypothesis must be tested and falsifiable.

2. A hypothesis must be supported by an observation and results of control experiments.

3. A hypothesis must proffer a solution to a problem.

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Not possible

\(\\ \rm{:}\rightarrowtail Br_2+2NaCl\longrightarrow Cl_2+2NaBr\)

According to order of reactivity for halogens

Bromine is less reactive than chlorine so it can't displace chlorine

When using a Van de Graaff generator charges repel because all the charges are negatively charged.

The Van de Graaff become negatively charged, because the rubber belt is an insulator and a poor conductor of electricity, the positive charge does not spread evenly across the belt.

Instead, as a result of electric induction, the inside of the belt remains positively charged, while the outside of the belt becomes negatively charged.

Thus, When using a Van de Graaff generator charges repel because all the charges are negatively charged.

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Answer:

....

The intermolecular forces affect the shape of a drop because a sphere has the smallest feasible surface vicinity for a given volume.

The intermolecular appealing interactions among water molecules reason the droplet to undertake a round shape. This maximizes the wide variety of appealing interactions and minimizes the wide variety of water molecules on the floor. Surface tension: Liquids with more potent intermolecular forces generally tend to have better surface anxiety than people with susceptible intermolecular forces. For example, in case you pour a totally small quantity of water on a table, it's going to generally tend to acquire collectively in a single huge drop.

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At least 2,000 years ago, during the Roman era, pewter was used. The basic ingredients of old pewter were 70% tin and 30% lead. This form of pewter, also referred to as black metal, rapidly lost its lead when exposed to acidic foods.

Older pewters with a higher lead concentration are heavier, tarnish more quickly, and turn a darker shade of silver-grey with time. In 1974, BS5140, which was strengthened in 1994 by the European directive BSEN611, eliminated lead from the composition.

Modern pewter is lead-free and safe to use for eating and drinking, however older antique pewter objects may have lead residues.

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Answer:

it helps in respiration

Answer:

Metals shows the property of malleability while non-metals are non-malleable. Metals are generally those substances that have a shiny surface and thus are lustrous. Whereas non-metals have non-shiny appearance and thus falls under the category of non-lustrous substances.

Answer:

It melts some of the ice cream and it makes it easier for him to scoop the ice cream out

Explanation:

Gas particles are spaced far apart and move around freely is the statement that describes the particles in a gas Option A is correct.

The gas is the state of matter in which the particles of matter are vey far away from each other and are not even visible from the normal human eyes and can move in zig zag motion in the environment.

As the particles are very much spaced from each other so the shape of the gas is also not fixed it can only be felt not can be seen from the eyes and particles are independent and free to move.

Therefore, Option A is correct. Gas particles are spaced far apart and move around freely is the statement that describes the particles in a gas.

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Answer:

boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature.

Explanation:

Radhe Radhe❤

Explanation:

The point at which a matter melts is called boiling or melting point.

The correct answer is increases, increases.

Solid, liquid, and gas solubility:

Changes in pressure hardly ever affect the solubility of solids or liquids. However, gases are highly reliant on the system's pressure. Liquids and gases combine to generate solutions.

The solubility of the molecule increases as the number of hydroxyl groups increases since there will be more hydrogen bonding as a result.

As the number of carbon atoms rises, alcohol's solubility decreases since the carbon chain is hydrophobic by nature. The hydrophobic group expands as the molecule's polarity decreases. As a molecule's polarity rises, its solubility gradually declines.

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i cant understand your question define briefly

The correct answers are option B. Currents occur at the surface of and deep within the ocean, C. The Coriolis effect contributes to the direction of current flow, E. Wind direction, the spin of Earth, and differences in temperature contribute to currents.

Ocean currents are continuous movements of ocean water driven by a variety of factors, including wind, temperature, salinity, and the rotation of the Earth. These currents can be either surface or deep, and they play a vital role in regulating global climate by distributing heat and nutrients throughout the oceans. Surface currents are driven primarily by wind, while deep currents are driven by differences in water density caused by variations in temperature and salinity. Some of the major ocean currents include the Gulf Stream, the Kuroshio Current, and the Antarctic Circumpolar Current.

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The full question is:

Which statement describes currents in the oceans? Check all that apply

A. El Nino is a current of water between Australia and North America

B. Currents occur at the surface of and deep within the ocean

C. The Coriolis effect contributes to the direction of current flow

D. Currents often change in unpredictable ways, causing climate change

E. Wind direction, the spin of Earth, and differences in temperature contribute to currents

Answer:

Flushing goldfish down the toliet

Explanation:

This would help the planet because goldfish are a very evasive species that has been harming our natural enviroments lakes and rivers. Ever since people have been flushing them down the toliet including me since I've had over six they have been finding their ways into our ecosytem and damaging nature. You may think that goldfish are a cute and small pet species to keep in a fish tank but the fish can grow in the right conditons up to 16.1 inches long and can top over five pounds in the wild. Unfortunately most goldfish never thrive like this in fish tanks due to nasty inadequate housing and feeding conditions. And most do not live up to their expected life span in the wild of 15 to even thirty years due to their living conditons. Did you know, goldfish will actually jump out of their tank in a final desperate search for better living conditions and enviroment to live in to meet their physiological needs. But lets get back to the problem so don't be to quick to feel sorry for them, when people flush them down the toliet they repopulate somehow in our lakes and rivers. Even through, it is not clear how they got there, which the suspected culprit is the sewer system. They threaten the natural enviroment tho because they are obnivores and they eat a mixtures of plants and animal specimen. You are probrably thinking why is this a problem, well its because goldfish are particullary greedy eaters and will eat, eat, and feast on the natural envrioment they infestated. And the waste they leave on the enviroment will promote the growth of algae which could cause an extent of enviromental damage. Of course goldfish are not impacted by this algae growth for adaptation reasons which shield them. This is not the main problem tho the main problem of this is that female goldfish can produce up to 1000 eggs at a time. And to make things worse unlike other fish species where the parents of the eggs leave the eggs for predaetors and well the elements of nature the goldfish instead guard their nest foriciously from predaetors that eat fish eggs in which effectively shields the populations young from danger. And to just add to the chaos the goldfish sadly have no real natural predaetor in the unitedstates which just causes more problems since they have no one killing them. And did I mention that they could live up to a real possibility of thirty years. And that they are forocious eaters that could eat a variety of types of foods. All of these facts in the end lead to two things first stop flushing your pet goldfish down the toliet and secondly now you know how golfish impact our planet.

Give brainliest please it took me over thirty minutes of thinking!

Answer:

Closed-toe shoes, long pants, a lab coat, safety glasses with side shields or splash goggles, and gloves.

Explanation:

Answer:

wavelength = 6 cm .

Explanation:

frequency given = 5 x 10⁹ .

wavelength = velocity of light / frequency

= 3 x 10⁸ / 5 x 10⁹

= .06 m

= 6 cm