please please help me i do not get this

a unique set of solubility curves is used to illustrate the relationship between a substance's solubility and temperature or pressure. solubility curves are employed in sectors like food, pharmaceuticals, and chemical manufacture.

A graph illustrating the relationship between a substance's solubility and temperature or pressure is called a solubility curve. The solubility (measured in grammes of solute per 100 grammes of solvent) is often plotted versus temperature (or pressure) on the x-axis in solubility curves, which are particular to each solute and solvent system. The solubility of a substance changes with temperature or pressure, and this fact makes solubility curves crucial in the study of chemistry and related subjects. They can be used to forecast how a solution will behave under certain situations, such as whether a solute will dissolve or precipitate out of solution. Moreover, solubility curves are employed in sectors like food, pharmaceuticals, and chemical manufacture.

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Answer: 24g

Explanation: bc

The molar concentration of lithium ions in the Li3PO4 solution is 1.65 M.

To determine the molar concentration of lithium ions in a Li3PO4 solution, we need to consider the ratio of lithium ions to Li3PO4 in the compound.

In Li3PO4, there are three lithium ions (Li+) for every one formula unit of Li3PO4. Therefore, the molar concentration of lithium ions will be three times the molar concentration of Li3PO4.

Given that the molar concentration of Li3PO4 is 0.550 M, the molar concentration of lithium ions will be:

0.550 M × 3 = 1.65 M

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Answer:20.83 ml

Explanation:

You always divide by the larger Molarity for these

500 X 0.25 / 6.0  = 20.83 ml of the 6.0 M HCl soln.

If it has to be to correct sig figs it is 21 ml

I

Answer:

45.98 I believe if its wrong im sorry

The option that does not demonstrate a property of heat is that it is a physical substance (option A).

Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

Heat can also refer to the thermal energy transferred between two systems at different temperatures that come in contact.

Heat is a form of energy and not a physical substance. Therefore, the first option is the correct answer.

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Answer:

Answer:

D. Ganymede

I hope this helps!

When uranium-235 undergoes nuclear fission, it splits into two smaller nuclei, releasing energy in the form of heat and radiation. Along with the release of energy, several nuclear fragments or products are produced. These fragments are of different sizes and mass numbers and are highly radioactive. They are known as fission products.

Fission products are highly radioactive isotopes and are considered to be nuclear waste. They are responsible for the long-term environmental impact of nuclear fission and pose a significant health hazard to living organisms. Fission products are classified into two groups: short-lived and long-lived
Short-lived isotopes have a half-life of less than 90 days, while long-lived isotopes have a half-life of more than 90 days. Short-lived isotopes decay quickly, and their radioactivity decreases rapidly. Long-lived isotopes, on the other hand, decay slowly and remain radioactive for thousands of years.
Some of the common fission products of uranium-235 are cesium-137, strontium-90, iodine-131, and xenon-135. These isotopes are highly radioactive and can cause severe health problems if not handled properly. They require specialized storage facilities to prevent their release into the environment and the food chain.
In conclusion, the material left over after the nuclear fission of uranium-235 is fission products, which are highly radioactive isotopes and require proper handling and storage to prevent environmental contamination and health hazards.

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Answer:

a) pathogen

b) virus

Explanation:

pathogens are harmful bacteria

viruses depend on the host to survive

Answer:

Explanation:

Hydrosulfuric acid (H_2S) is considered a 'weak acid." It dissociates in water according to this reaction: H_2 S(aq) + H_2O(t) HS^-(aq) + H_3O^+(aq) k_a = 9 times 10^-8 Hydroiodic acid (HI) is considered a "strong acid".

Answer:

Bases are substances that dissolve in water to release hydroxide ions ... Chalk and oven cleaner are examples of familiar products that contain bases

Answer:

Mesosphere

Stratosphere

Thermosphere

Troposphere

Exosphere

Explanation:

The exosphere refers to the farthest region of the atmosphere that gradually fades into space.

The troposphere is the lowest layer of atmosphere. It is the layer where weather changes occur.

The thermosphere is right above the mesosphere but just below the exosphere. It is the layer where photoionization/photodissociation of molecules occurs thereby creating ions. This largely owes to interaction of molecules in this layer with ultraviolet radiation.

The stratosphere is composed of gases. Prominent among them is ozone which serves as a blanket against the sun's ionizing radiation.

The mesosphere lies above the stratosphere but just below the thermosphere. Temperature decreases steadily with height in the mesosphere.

The 5 layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

The atmosphere has been consisted of the 5 layers that protect the earth. The layers have been present at the height that and each layer has consisted of different constituents.

The layers of the atmosphere can be described as:

The 5 layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

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s, p, d

Explanation:

the number of sublevels for an energy level is as follows:

for n = 1 : s

for n = 2 : s, p.

for n = 3 : s, p, d.

for n = 4 or higher : s, p, d, f.

The correct wave that matched its definition is:

A wave is known to be a disturbance that travels through a medium and transfers energy from one point to another without causing any permanent displacement of the medium itself.

We have two forms of wave namely the transverse waves and the longitudinal waves.

When the vibration of a medium is perpendicular to the wave direction, the kind of wave formed is known as a transverse wave.

When the vibration of a medium is parallel to the wave direction, the kind of wave formed is known as a longitudinal wave.

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Answer: Free radicals are dangerous because they emit energy is incorrect.

Explanation:

Free radicals are dangerous because they are highly reactive species with an unpaired electron in their outer shell. This unpaired electron can react with other molecules, including DNA, proteins, and lipids, which can lead to damage and disease. However, free radicals do not emit energy as a general rule.

Isotopes having the same atomic number but different atomic mass is a correct statement. Atoms having the same number of protons and electrons is also a correct statement since atoms are electrically neutral. Finally, all molecules are indeed made of atoms.

The collisions between gas particles can either be elastic or inelastic, depending on the nature of the gas and the conditions of the collision.

Elastic collisions occur when the total kinetic energy of the colliding particles remains constant before and after the collision. In contrast, inelastic collisions result in a transfer of kinetic energy from one particle to another, leading to a change in the total kinetic energy of the system. Among the gases listed, only the noble gas He exhibits completely elastic collisions under all conditions. This is due to its simple atomic structure, which allows it to retain its kinetic energy in collisions without undergoing chemical reactions or energy transfers.
E) All gases the same

Collisions between gas particles are generally considered elastic, meaning that the total kinetic energy of the particles involved is conserved before and after the collision. This assumption holds true for all ideal gases, including He, Cl2, CH4, and NH3. In reality, gases may deviate from ideal behavior, but for most practical purposes and calculations, we can assume that collisions are elastic for all of the gases mentioned.

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Answer:

In a chemical reaction, only atoms are present in the reactant and can end up with molecules. No new atoms are created and no more atoms are destroyed. In a chemical reaction, reactants contact with each other and the bond between atoms in the reactant is broken and atoms rearrange and form new bonds to make the product.

Explanation:

Answer:

36 atoms

Explanation:

The equation for the reaction is given below:

C6H12O6 + 6O2 —> 6CO2 + 6H2O

From the reaction above, the reactants include:

C6H12O6 and 6O2.

Thus, the total atom present in the reactants can be obtained as follow:

Element >>>>>>>> Atom present

Carbon (C) >>>>>> 6

Hydrogen (H) >>>> 12

Oxygen (O) >>>>>> 18

TOTAL >>>>>>>>>> 36

From the above illustration, 36 atoms are represented in the reactants.

A property of water is that it requires less heat than ethanol to raise its temperature.

Among the given options, the property of water that stands out is that it requires less heat than ethanol to raise its temperature. This property is known as the high specific heat capacity of water.

Water has a relatively high specific heat capacity compared to many other substances, including ethanol.

This means that it takes a larger amount of heat energy to raise the temperature of water compared to ethanol for the same mass of the substance.

The high specific heat capacity of water is attributed to hydrogen bonding between water molecules.

These hydrogen bonds result in a significant amount of energy being required to break the intermolecular forces and raise the temperature of water. As a result, water can absorb and store a considerable amount of heat energy without undergoing a significant temperature change.

In contrast, ethanol has a lower specific heat capacity, meaning it requires less heat energy to increase its temperature compared to water.

This property of water plays a vital role in regulating Earth's temperature and climate, as water bodies can absorb and release heat energy, helping to moderate temperature changes in the environment.

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The percentage of light that gets through Unpolarized light is 12.5%

A light wave that is vibrating in more than one plane is referred to as unpolarized light is called unpolarized light.

The General  formula  of unpolarized light is:

I transmitted = I0<cos2θ>all angles = ½I0.----------------(1)

Here we have to find I3/Io

Considering the I1 for the taking the value 0° and substitute in equation(1) we get

I1=1/2Io---------(2)

Next, we have to consider another value θ=45°, and substitute in equation(1) we get the I2 value.

I2=I1cos^2(45°-0)

I2=I1cos^2(45°)--------------(3)

Next, consider the last value  θ=90° and the substitute in equation(1),we get:

I3=I2cos^2(90°-45°)

I3=I2cos^2(45°)-----------(4)

I3=I2cos^2(45°)

   =I1cos^4(45°)

    =1/2Iocos^4(45°)

I3/Io=0.125

I3/Io=12.5%

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Explanation:

hope this helps you.

Answer:

\({ \sf{Pb(NO_{3})_{2(aq)} + 2NaCl _{(aq)} → 2NaNO_{3(aq)} + PbCl _{2(s)} }} \\ \)

Answer:

a) 6.17 g of solid KOH

b) 88.0 mL of a 1.25 M potassium hydroxide solution​

Explanation:

a) We have to determine the mass of solid potassium hydroxide that has to be weighed to prepare 220 mL of a 0.500 M potassium hydroxide solution. We will also require the molar mass of potassium hydroxide, KOH, 56.11 g/mol.

0.220 L × (0.500 mol/L) × (56.11 g/mol) = 6.17 g

b) We will use the dilution rule to determine the volume of the 1.25 M potassium hydroxide solution​ to be measured.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.500 M × 220 mL / 1.25 M = 88.0 mL

Answer:

(2) Ammonia I hope you good luck

(1) aluminum

Let's look at all the options first:

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A  plastic container covered with a dinner plate  is used in the store raw poultry. Hence option b is correct.

Poultry is defined as several bird species that are raised on farms for food, fiber, or entertainment. The most crucial sense for all birds, including hens, is vision.

Raw fowl should be kept in a bowl or on a tray in the bottom of the refrigerator. Your refrigerator should be kept at a minimum temperature of 38 to 40 degrees Fahrenheit. Only one to two days should be allowed for fresh, raw poultry. Rinsing poultry before cooking is no longer advised.

Thus, a plastic container covered with a dinner plate  is used in the store raw poultry. Hence option b is correct.

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The concentration of SO₄⁻² that remains in the solution will be 0.174 M

Volume of KOH = 114 ml

Volume of NiSO₄ = 260 ml

Molarity of KOH = 0.190 M

Molarity of NiSO₄ = 0.250 M

Concentration of SO₄⁻² = ?

    NiSO₄ (aq)  ⇆  Ni⁺² (aq) + SO₄⁻² (aq)

Calculate the number of moles (n) of SO₄⁻² in 260 ml solution

    number of moles (n) of SO₄⁻² = 0.250 × 260 ml / 1000 ml

    number of moles (n) of SO₄⁻² = 0.065 mol

    total volume = 114 ml + 260 ml

    total volume = 374 ml

Now calculate the concentration of SO₄⁻²

    concentration of SO₄⁻² = number of moles × 1000 / volume (ml)

    concentration of SO₄⁻² = 0.065 × 1000 / 374

    concentration of SO₄⁻² = 0.174 M

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The Li 2CO 3, lithium carbonate, an inorganic chemical, is the lithium salt of carbonic acid.

Thus,The processing of metal oxides makes extensive use of this white salt. Due to its effectiveness in treating mood disorders, notably bipolar disorder, it is listed on the WHO's list of essential medicines and lithium carbonate,

Another crucial industrial chemical is lithium carbonate. Its primary function is as an ingredient in the substances used to create lithium-ion batteries.

Lithium carbonate glasses work well for ovenware. Ceramic glazes that are fired at low and high temperatures frequently contain lithium carbonate. When mixed with silica and other minerals, it produces low-melting fluxes.

Thus, The Li 2CO 3, lithium carbonate, an inorganic chemical, is the lithium salt of carbonic acid.

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Answer:

Explanation:

from the way the trees look, i would say A: Wind from the sky, it seems B: Clouds and in the distance C:Precipitation(rain)

Answer:

Water, Carbon Dioxide, Oxygen

Explanation:

Only the smallest molecules like water, carbon dioxide, and oxygen can freely diffuse across cell membranes.

Small and nonpolar molecules will diffuse through a cell membrane most readily. The correct option is a.

A phospholipid bilayer, which is selectively permeable to some substances, makes up the majority of cell membranes.

Small and nonpolar molecules can easily permeate through the hydrophobic interior of the cell membrane, including oxygen, carbon dioxide, and compounds that are soluble in lipids.

These compounds don't require specific transport mechanisms to dissolve in the lipid bilayer and pass through the membrane due to their nonpolar nature.

However, due to their size, polarity, and charges, respectively, large and polar, small and charged, and large and charged molecules have a harder time diffusing through the cell membrane.

Thus, the correct option is a.

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Your question seems incomplete, the probable complete question is:

Which of the following types of molecules will diffuse through a cell membrane most readily?

a) Small and nonpolar molecules

b) Large and polar molecules

c) Small and charged molecules

d) Large and charged molecules