consider the reaction: k2s(aq) co(no3)2(aq) ¡ 2 kno3(aq) cos(s) what volume of 0.225 m k2s solution is required to completely react with 175 ml of 0.115 m co(no3)2?

Answer:

because it's composed of two elements, hydrogen and oxygen. water is technically a molecular compound tho, for it has two hydrogens.

Answer:

carcinogen

Explanation:

cigarette smoke and UV radiation both of the capability to cause cancer cells in living tissue, meaning they can both be classed as carcinogens

When the reaction is subjected to pressure, the equilibrium will shift to the side with fewer gas molecules, which is the left side. Therefore, the answer is c. left.

According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in pressure, it will respond by shifting in a way that reduces the effect of the change. In this case, increasing the pressure would cause the equilibrium to shift towards the side with fewer gas molecules to alleviate the increase in pressure.

Since there are fewer gas molecules on the left side of the reaction (2 CO + O2), the equilibrium will shift to the left to reduce the total number of gas molecules. This means that the concentrations of CO and O2 will increase, while the concentration of CO2 will decrease until a new equilibrium is established. Thus, the equilibrium will shift to the left.

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The new molarity after dilution is approximately 6.375.

The amount of a solution is gauged by its molarity. It is described as the quantity of solute in a solution measured in moles per liter. M represents molarity in a symbol.

The dilution equation is as follows:

\(M^1V^1 = M^2V^2\)

Where

Substituting the given values, we get:

\(M^1 = 4.5 MV^1 = 1.7 LV^2 = 1.2 LM^2 = ?\)

Using the equation for dilution, we can solve for M2:

\(M^1V^1 = M^2V^2\)

4.5 M × 1.7 L =\(M^2\) × 1.2 L

7.65 = 1.2\(M^2\)

\(M^2\) = 7.65 / 1.2

\(M^2\)= 6.375 M

Therefore, the new molarity after dilution is approximately 6.375.

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Reactions according to Bronsted are those in which there is an exchange of H+ ions. The Bronsted acid will be the substance that donates H+ ions and the base will be the compound that receives them.

As a result we will have a conjugated acid and a conjugated base. The conjugate acid will be the former base that just received the H+ ions. The conjugate base will be the former acid that donated its H+ ions.

Now let's look at the reaction. On the reactants side the compound that can donate H+ ions will be HSO3- and the compound CN- will be the one that receives them. Therefore, HSO3 will be the Bronsted acid (A) and CN will be the base (B).

HSO3 ---> A

CN -----> B

Now let's look at the product side. The compound that received the H+ ions will be the compound HCN, so this will be the conjugate acid (Ac). And the compound that lost its H+ ions is SO3, so it will be the conjugate base (Bc).

HCN --->Ac

SO3 ---->Bc

Comparing the analysis that we did with the reaction we will have that:

So, the answer will be option number 5

Answer: The four ions formed are \(H^+\) , \(OH^-\) , \(Na^+\) and \(Cl^-\)

Explanation:

Electrolysis is the process where electricity is used to drive chemical reactions.

In the electrolysis of aqueous solution of sodium chloride, hydrogen gas produces at the cathode which is a negative electrode and chlorine gas produces as the anode which is a positive electrode and the sodium hydroxide remains dissolved in the solution.

The reactions will be :

\(NaCl\rightarrow Na^++Cl^-\)

\(H_2O\rightarrow H^++OH^-\)

Hence, electrolysis of an aqueous solution of sodium chloride lead to the formation of four ions,\(H^+\) , \(OH^-\) , \(Na^+\) and \(Cl^-\)

Answer: the direction of decreasing temperature

Answer:

TRUE

Explanation

Negative punishment's or  reinforcement .

Negative reinforcement comes as a result of failing to take the necessary precautional measures , whether intentional or unintentional .

Forgetting is a natural circumstance hence if one forgets it means in the first place he has by passed the protocols anyway and he has to take the consequences  .

Sometimes it may be ignorance since it is in common knowledge to turn off  any machine and if possible you should unplug it from the power supply to avoid any shocks which may even be fatal if the source of power does not have mechanisms to control such situations i.e. shocks and power surges .

Psychological when one gets such a punishments he will always remember the ordeal since it inflicted pain on him and he will always take precautional measures before handling an electronic or power sources .

Answer:false

Explanation:

The mechanism involving the acid-catalyzed hydration of an alkene with water involves the formation of a carbocation intermediate, and the addition of the electrophile is the slow step.

The acid-catalyzed hydration of an alkene with water is a reaction in which an alkene molecule reacts with water in the presence of an acid catalyst to form an alcohol. The mechanism for this reaction involves several steps.

Firstly, the acid catalyst protonates the alkene, forming a carbocation intermediate. This step is usually fast because the alkene acts as a nucleophile and readily accepts a proton from the acid.

Next, water acts as a nucleophile and adds to the carbocation, forming a protonated alcohol. This addition of the nucleophile is typically fast.

Finally, a deprotonation step occurs, where water removes a proton from the protonated alcohol, resulting in the formation of the alcohol product.

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Answer: i think its (b) be abundant in the crust

Explanation:

The valproic acid contains 0.0645 milligrams

1000 microgram = 1 milligram

From the question given, the following data were obtained:

We can convert 64.5 micrograms to milligrams as illustrated below:

1000 microgram = 1 milligram

Therefore,

64.5 micrograms = (64.5 micrograms × 1 milligram) / 1000 microgram

64.5 micrograms = 0.0645 milligrams

Thus, the valproic acid contains 0.0645 milligrams

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Atoms are smallest particle of any entity; Atoms consist of three fundamental types of particles, protons, electrons and neutrons. Option C & D are the correct statement.

Define an atom?

Atoms are the smallest particle of an element. Atoms cannot be broken into sub parts. It consisting of 3 particles like, protons, electrons and neutrons.

Atoms of the all substance do not have same chemical properties. Because, atoms have different number of proton and electrons. Atoms cannot be destroyed by heating or cooling. Smallest unit atoms have elemental chemical identity and atoms can combine to make all the substance on earth.

Therefore, statement C and D are correct.

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The statement that correctly describes atoms are:

c. Atoms are the smallest unit of an element that has the chemical identity of that element.

d. Atoms combine to make all the substances on Earth.

The tiniest component of an element is called an atom. Atoms are not divisible into smaller components. It is made up of three different particles: protons, electrons, and neutrons.

All atoms do not share the same chemical characteristics. Because the quantity of protons and electrons in each atom varies. No amount of heat or cold can kill an atom.

Therefore, the correct option is c and d.

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Answer:

\(\boxed {\boxed {\sf About \ 37.1 \ grams \ of \ iodine }}\)

Explanation:

To convert from atoms to grams, you must first convert atoms to moles, then moles to grams.

1. Convert Atoms to Moles

To convert atoms to grams, Avogadro's number must be used.

\(6.022*10^{23}\)

This number tells us the number of particles (atoms, molecules, ions, etc.) in 1 mole. In this case, the particles are atoms of iodine.

\(\frac{6.022*10^{23} \ atoms \ I }{1 \ mol \ I}\)

Multiply the given number of atoms by Avogadro's number.

\(1.76*10^{23} \ atoms \ I*\frac{6.022*10^{23} \ atoms \ I }{1 \ mol \ I}\)

Flip the fraction so the atoms of iodine will cancel out.

\(1.76*10^{23} \ atoms \ I*\frac{ 1 \ mol \ I}{6.022*10^{23} \ atoms \ I}\)

\(1.76*10^{23}* \frac{1 \ mol \ I}{6.022*10^{23} }\)

Multiply so the problem condenses into 1 fraction.

\(\frac{1.76*10^{23} \ mol \ I}{6.022*10^{23} }\)

\(0.2922617071 \ mol \ I\)

2. Convert Moles to Grams

Now we must use the molar mass of iodine, which is found on the Periodic Table.

Use this mass as a fraction.

\(\frac{ 126.9045 \ g\ I }{ 1 \ mol \ I}\)

Multiply this fraction by the number of moles found above.

\(0.2922617071 \ mol \ I*\frac{ 126.9045 \ g\ I }{ 1 \ mol \ I}\)

Multiply. The moles of iodine will cancel.

\(0.2922617071 *\frac{ 126.9045 \ g\ I }{ 1 }\)

The 1 as a denominator is insignificant.

\(0.2922617071 *{ 126.9045 \ g\ I }\)

\(37.08932581 \ g \ I\)

3. Round

The original measurement of 1.76*10^23 has 3 significant figures (1, 7, and 6). Therefore we must round our answer to 3 sig figs. For this answer, that is the tenths place.

\(37.08932581 \ g \ I\)

The 8 in the hundredth place tells us to round the 0 up to a 1.

\(\approx 37.1\ g \ I\)

There is about 37.1 grams of iodine in 1.76*10^23 atoms.

Answer:

kylee is the best

Explanation:

Answer:

Catalase

Explanation:

A damaged enzyme may no longer work to catalyze a chemical reaction. Catalase is an enzyme in the liver that breaks down harmful hydrogen peroxide into oxygen and water. When this reaction occurs, oxygen gas bubbles escape and create foam.

Answer:

The system will shift to the right (Forward).

Explanation:

Based on the equilibrium:

2CO(g) + O2(g) ⇄ 2CO2(g)

If the amount of O2 is increased: The equilibrium will shift to the right trying to decrease this concentration following the Le-Ch principle that says:

A change in an equilibrium will be counteracted by the system producing a response that restore the initial state.

Answer:

A. Reduced precipitation is the cause of drought.

Explanation:

Reduced precipitation begins to insufficient water availability because water catch basins or tanks tend to dry out. When it drains out, people tend to start working and drying out the backup water sources and stored ones. Until such time, that the reservoirs of water will completely be dried out. And there will be no more water for them to use and there will be a drought.

hope this helps

Answer:

Option A

Explanation:

Answer:

I dont see the image

Explanation:

pls make it close up

Answer:

salt is solute,water solvent, the mixture is the solition.

A student dissolves 15 grams of salt in 250 mL of water. The solute is salt and the solvent is water.

A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.

For solutions with components in the same phase, the substances present in lower concentration are solutes, while the substance present in highest abundance is the solvent.

Therefore, A student dissolves 15 grams of salt in 250 mL of water. The solute is salt and the solvent is water.

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Answer:

105Comprendes las leyes de la electricidadAprende másClasificación de los materialesUn medio o material que permite el movimiento de las cargas eléctricas (electrones) en respuesta a una fuerza eléctrica, se denomina conductor. Los materiales conductores son los que se pueden electrizar en toda su superficie, debido a que los electrones se mueven libremente. Los metales por lo general son buenos conductores de la electricidad.El flujo de las partículas cargadas es lo que se conoce como corriente eléctrica. Las partículas cargadas en una cierta dirección de un conductor chocan con los átomos, produciendo una pérdida de energía que se manifiesta en forma de calor.Una medida de oposición que presentan las partículas cargadas al moverse libre-mente en una cierta dirección de un material conductor es lo que se conoce como resistencia eléctrica.Los materiales que no permiten que las partículas cargadas se muevan hacia otra región del material a una fuerza eléctrica, son llamados aislantespor ejemplo, la madera.Existen otros tipos de materiales cuyas propiedades son intermedias entre los conductores y aislantes; se llaman semiconductores.Algunos ejemplos de materiales con estas características son:

Explanation:

The value of kp at 390.°c for the reversible reaction given below is Kp₂ = 7.95 x 10^(-3) * e^[(162,000 J/mol) / (8.314 J/mol•K) * (1/663 K - 1/298 K)]

To calculate the value of Kp at 25°C (298 K) given the value of Kp at 390°C (663 K), we can use the Van 't Hoff equation:

ln(Kp₂/Kp₁) = ∆H°/R * (1/T₁ - 1/T₂)

where:

Kp₁ = Kp at temperature T₁ (390°C = 663 K)

Kp₂ = Kp at temperature T₂ (25°C = 298 K)

∆H° = Standard enthalpy change for the reaction

R = Gas constant (8.314 J/mol•K)

Plugging in the values, we have:

ln(Kp₂/7.95 x 10^(-3)) = (162,000 J/mol) / (8.314 J/mol•K) * (1/663 K - 1/298 K)

Now we can solve for ln(Kp₂/7.95 x 10^(-3)) and then calculate Kp₂ by taking the exponential of both sides of the equation:

Kp₂ = 7.95 x 10^(-3) * e^[(162,000 J/mol) / (8.314 J/mol•K) * (1/663 K - 1/298 K)]

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The required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

To determine the required heat in BTU, for the water at 50°C to become ice at -50°C, we need to calculate the heat of fusion and the heat of cooling of water. We can use the following formula to calculate the required heat.

Q = mL

Where:Q is the required heat in BTU.

m is the mass of water in pounds.L is the specific heat of water at the desired temperature.

Lf is the heat of fusion of water.

Lc is the specific heat of ice.

Using the above formula, we get;

Q = mLf + mL + mLc

The heat of fusion of water is 144 BTU/lb

The specific heat of water at 50°C is 1.00 BTU/lb °F.

The specific heat of ice is 0.5 BTU/lb°F.

We know that: 1°C = 1.8°F.

So,50°C = 122°F and -50°C = -58°F

Also, the mass of water is not given, so let us assume that the mass of water is 1 lb.

Thus;

Q = mLf + mL + mLc

Q = 1(144) + 1(1.00)(122-32) + 1(0.5)(-50-0)

Q = 144 + 90 + (-25)

Q = 209 BTU/lb

Therefore, the required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

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Answer:

so it's not breakable

Explanation:

because the of a cat is made of metal so u can't break a dog's tal il and m

Answer:

\(\color{Blue}\huge\boxed{Answer} \)

Sand is a granular material composed of finely divided rock and mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt.

Answer:

electric current is the rate of charge flow past a given point in an electric circuit.

Explanation:

Hopefully this is the answer

Answer:An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.

Explanation:

The theory that the collapse of a massive star's iron core produces neutrinos was supported by the detection of a burst of neutrinos from the direction of Supernova 1987A in the Large Magellanic Cloud.

This burst of neutrinos was detected by several neutrino observatories around the world, including Kamiokande II in Japan and IMB in the United States, which detected a total of 24 neutrino events.

The time of arrival and energy spectrum of these neutrinos were consistent with the predictions of the theory of core-collapse supernovae, providing strong evidence for the idea that massive stars end their lives in a violent explosion, accompanied by the emission of large numbers of neutrinos.

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The most likely type of elements to be good oxidizing agents among the given options are e) halogens.

Halogens are non-metallic elements found in Group 17 of the periodic table and include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). These elements have seven valence electrons in their outer shell, which means they only need one more electron to complete their octet and achieve a stable configuration.
Halogens have high electronegativities, making them very reactive and eager to gain an electron from other elements. When a halogen gains an electron, it undergoes reduction, while the element donating the electron undergoes oxidation. Due to their strong tendency to gain electrons, halogens function as excellent oxidizing agents.

Alkaline earth elements (b), found in Group 2, and alkali metals (d), found in Group 1, are not as likely to be good oxidizing agents. They are more inclined to lose electrons, making them reducing agents instead. Meanwhile, transition elements (a) and lanthanides (c) are less predictable in their behavior as oxidizing or reducing agents, as their reactivity depends on their specific oxidation states and the context in which they are interacting with other elements.

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The answer is e) halogens. Halogens are highly electronegative elements and have a tendency to attract electrons from other elements, making them good oxidizing agents.

The Alkaline earth elements, on the other hand, have a relatively low electronegativity and are therefore less likely to act as oxidizing agents. The most likely type of elements to be good oxidizing agents among the given options is e) halogens. Halogens have high electronegativities, meaning they have a strong tendency to attract electrons from other elements.  As an oxidizing agent, a halogen gains electrons from other elements, causing them to become oxidized. This makes halogens effective oxidizing agents compared to the other options provided.

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Answer:the first answer is correct and 8 is O, Ge, Mn

Explanation:

The substance that is usually one of the limiting amino acids in foods, particularly those of plant origin, can vary depending on the specific food. However, common limiting amino acids in plant-based foods include methionine and lysine. Therefore, option c, methionine, is likely the correct answer to your question.

Methionine (c) is usually one of the limiting amino acids in foods, particularly those of plant origin. Limiting amino acids are those that are present in the lowest quantity relative to the body's requirements, and they can limit the utilization of other amino acids in protein synthesis.

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