What is the molar concentration of sodium ions in a 0. 350 m na3po4 solution?.

Answer:

Explanation:

f i did this in my class

Answer:

3 rd

Explanation:

yes answer is 3 you can go with it

25 x 6.022 x \(10^{23}\)formula units are present in 25.0 mol of sodium chloride.

A mole is defined as 6.02214076 × \(10^{23}\)

of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

One mole of NaCl contains 6.022 x \(10^{23}\) NaCl formula units.

25.0 mol of sodium chloride contains 25 x 6.022 x \(10^{23}\).

Hence, 25 x 6.022 x \(10^{23}\)formula units are present in 25.0 mol of sodium chloride.

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The number of formula units are present in 25.0 mol of sodium chloride is 25 x 6.022 x 10 ²³ formula units of sodium chloride.

A formula unit in chemistry is the empirical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations.

It is the lowest whole number ratio of ions represented in an ionic compound.

Hence, The number of formula units are present in 25.0 mol of sodium chloride is 25 x 6.022 x 10 ²³ formula units of sodium chloride.

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The mass number and charge of this atom or ion is 24  and charge +2

The mass number is equals to the total number of protons and neutrons in a nucleus.

In the give question, The number of neutrons is a distractor.

Only the number of electrons versus the number of protons determines ionic charge. The charge of the ion is +2

Hence, The mass number and charge of this atom or ion is 24  and charge +2

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Answer:

n the sciences, the “tools” for measuring the volumes of liquids are generally made from glass, plastic or occasionally metal, although professionals referred to all of them as “glassware.” Scientists, and chemists in particular, have a variety of glassware at their disposal for measuring volumes. The particular piece of glassware chosen in any situation will depend primarily upon two factors: the required volume and the accuracy required for the measurement.

Explanation:

Hope this helps leave a heart c:

The relative acidic intensity of the acidic rise or reduction is affected by periodic trends, resonance, induction, and orbitals.

Regular Trends From top to bottom, the basicity rises and the acidity declines, whereas the opposite is true from left to right. If a molecule is resonance stabilized after deprotonation, its acidity increases as the conjugate base's negative charge density decreases, making the molecule more stable overall.

Effect of Induction the presence of the -I group will attract the O-H bond's electron cloud, making it easier to remove the proton and making the molecule more acidic, making it stronger than molecules without it.

Because the diffuseness of the orbital grows from s to f, making s better suited to stabilize a negative charge than p and d, the order of the orbitals' acidity is s > p > d > f.

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Answer:

A. Almost all of the mass is concentrated in the nucleus.

Explanation:

Because when he shot the alpha particles towards the atoms, most passed through (which meant atom is mostly empty space), but some bounced back and such (which meant mass is concentrated in the nucleus.)

The reason they bounced is because alpha particles are postive and nucleus is positive as well, and we know positives don't attract, rather they repel thus they bounced.

Most of the matter making up earth is composed of compounds. I think

Answer:

basically you do moles equals mass divides by atomic mass or formula mass. But in this case you do mass divided by atomic mass. Remember to multiply the atomic mass of Oxygen by 2 because there are 2 atoms.

Answer:

39%

Explanation:

The Dry Bulb Temperature (also known as air temperature) is the ambient air temperature.

The Wet Bulb temperature is the temperature of adiabatic saturation.

The relative humidity is the amount of water vapor in the air. The relative humidity can be gotten from the dry bulb and wet bulb temperature. The difference between the wet bulb and dry bulb temperature as well as the dry bulb temperature is used to determine the relative humidity with the help of a Psychrometric Chart

Given that the dry-bulb temperature is 8˚C and the difference between the wet and dry-bulb temperatures is 6˚C. From the chart:

Relative humidity = 39%

Answer:

39% I believe is correct.

A metal electrode composed of  strong reducing agent will have a greater

electrical potential to push electrons toward the electrode composed of a

weak reducing agent.

Strong reducing agents are compounds which donates or loses electrons

with a corresponding increase in the oxidation state. Weak reducing agents

can also be referred to as oxidizing agents and they accept the electrons

from the strong reducing agents which results in a reduction in the oxidation

state.

The strong reducing agent has a greater electric potential which aids the

electrons being pushed towards the electrodes with a weak reducing agent.

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Answer: True

Explanation:

In order to properly balance an equation, we need to make sure that the same amount of elements on the reactants side matches the number of elements on the products side, we can do that by increasing the number in front of each molecule, the so called stoichiometric coefficient. In the reaction from the question we can properly balance by adding the following stoichiometric coefficients

1. 2 H2 + O2 -> 2 HO2

2. FeCl2 + H2O -> FeO + 2 HCl

3. C4H8 + 6 O2 -> 4 CO2 + 4 H2O

4. ?

5. 2 NaOH + MgCl2 -> 2 NaCl + Mg(OH)2

Answer:

Metric system !!hope this helpss

The byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

In acid catalysis and base catalysis, a chemical reactiοn is catalyzed by an acid οr a base. By Brønsted–Lοwry acid–base theοry, the acid is the prοtοn (hydrοgen iοn, H+) dοnοr and the base is the prοtοn acceptοr. Typical reactiοns catalyzed by prοtοn transfer are esterificatiοns and aldοl reactiοns.

The acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate can lead tο variοus by prοducts depending οn the reactiοn cοnditiοns and specific chemical pathways. Hοwever, withοut mοre detailed infοrmatiοn οr a specific reactiοn mechanism, it is difficult tο prοvide a cοmprehensive list οf the by prοducts that may fοrm.

Based οn the infοrmatiοn prοvided, the acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate delivers the desired (+)-phenylalanine hydrοchlοride prοduct and the fοllοwing byprοduct(s):

E. Bοth A and C: Acetic acid and ethanοl.

The hydrοlysis οf diethyl acetamidοbenzylmalοnate invοlves the cleavage οf ester bοnds, resulting in the fοrmatiοn οf acetic acid as a byprοduct. Additiοnally, since diethyl acetamidοbenzylmalοnate is an ester, hydrοlysis οf the ester bοnds can alsο prοduce ethanοl as anοther byprοduct.

Therefοre, the byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

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Complete Question :

The new concentration of the solution is 0.552 M. The addition of water diluted the initial solution and reduced the acid concentration. The new concentration of 0.552M is lower than the initial concentration of 1.2M, indicating a more dilute solution.

The starting solution contains 23 ml of 1.2 M acid solution. When students add water, the total volume of the solution increases to 50.0 mL. The dilution formula can be used to calculate the new concentration of the solution.

The dilution formula is:

C1V1 = C2V2

where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration and V2 is the final volume.

Plugging in the given values ​​gives:

C1=1.2M

V1 = 23ml

V2 = 50.0mL

Solving for C2 gives:

C2 = (C1 × V1)/V2

C2=(1.2M×23mL)/50.0mL

C2=0.552M

This calculation highlights the importance of considering volume changes during dilution.

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The pH of a solution that is 0. 322 m in nitrous acid when acid dissociation constant of nitrous acid is 4 is given by 3.089, option C.

pH is a numerical indicator of how acidic or basic aqueous or other liquid solutions are. The phrase, which is frequently used in chemistry, biology, and agronomy, converts the hydrogen ion concentration, which typically ranges between 1 and 1014 gram-equivalents per litre, into numbers between 0 and 14.

The hydrogen ion concentration in pure water, which has a pH of 7, is 107 gram-equivalents per litre, making it neutral (neither acidic nor alkaline). A solution with a pH below 7 is referred to as acidic, and one with a pH over 7 is referred to as basic, or alkaline.

The concentration of nitrous acid is 0.322 M

The concentration of potassium nitrite is 0.178 M

The acid dissociation constant of nitrous acid is, ka = 4.50 x 10⁻⁴

The Henderson-Hasselbalch equation for an acidic buffer is shown below:

pH = pKa + log\(\frac{[salt]}{[Acis]}\)

pKa = - logKa

pKa = - log(4.50 x 10⁻⁴)

= 3.35

Substitute values in the equation as,

pH = 3.35 + log(0.178/0.322)

= 3.35 + log(0.6077)

= 3.35 + (-0.216)

= 3.09.

Therefore, the pH is given by 3.09.

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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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Answer:

I think it is option (b) river

The river flows is not driven by pressure differences.

Conclusively we can say that the river flows is not driven by pressure differences

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The forming of bubbles when baking soda and vinegar are mixed is a result of chemical property.

Chemical properties of materials are properties that are due to the chemical composition of the materials.

The formation of bubbles when baking soda is mixed with vinegar is a result of the evolution of carbon dioxide gas.

Baking soda reacts with vinegar to produce carbon dioxide and other products according to the chemical equation below:

NaHCO3 + CH3COOH → CO2 + H2O + CH3COONa

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Answer: The water will taste sour.

Explanation:

Answer: D. The water will taste sour (Edmentum)

Explanation:

Answer:

C

Explanation:

The correct answer would be that the rate of photosynthesis in Euglena will be reduced.

The eyespot in Euglena primarily serves as a light detector, enabling the organism to locate areas of adequate sunlight for the food manufacturing process through photosynthesis.

Hence, if the eyespot is damaged, the ability of the organism to position itself in optimum sunlight for photosynthesis would be lost and the rate of photosynthesis will automatically reduce.

The correct option is C.

A damaged Euglena eyespot means that the rate of photosynthesis will be

reduced.

Euglena is referred to as a single celled eukaryotes which has a flagella for

movement and ability to manufacture food via photosynthesis. The

eyespot present in the euglena helps it to locate light source which is

needed for photosynthesis.

A damage to the eyespot will definitely cause difficulty in location of the

light source and reduction in photosynthesis.

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Chlorine serves as the reaction's limiting reagent, and sodium serves as the reaction's reagent. The point of equivalency, known as endpoint of the reaction, where the mass of sodium and mass of chlorine are equal.

The white, crystalline substance sodium chloride, or ordinary table salt, which comprises sodium cations and chloride anions, is created by a powerful reaction between the elements sodium and chlorine.

Because each chemical equation must be balanced and the amount of atoms of each element on the reactant side must match the number of atoms of each other, chemical equations serve as examples of the law of conservation of mass.

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Answer:

sea water

Explanation:

b. state , hess's law can be used to solve for reaction enthalpy changes because enthalpy is a state function.

Hess's Law states that the change in enthalpy (heat content) of a chemical reaction is independent of the route by which the reaction occurs. This means that the total enthalpy change for a reaction can be calculated by summing the enthalpy changes for a series of intermediate steps that lead to the final reaction. This allows for the prediction of the heat of reaction for a reaction without the need for direct measurement.

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A reducing chemical reaction adds an electron to the substrate.

Reduction is a term used to describe the yield of electrons, the accumulation of hydrogen, or the reduction of oxygen from the substrate.

When a reactant accumulates electrons during a reaction, it is called reduction. Reduction reactions include the addition of electrons to a substrate and the donor of the electrons is a reducing agent that itself brings oxidization. Therefore a reducing chemical reaction retains the addition of electrons to a substrate.

Oxidation-reduction (redox) reactions consist of the transfer of electrons between compounds while catabolic reactions are the type of reactions in which complex substances are split down into simpler units with the discharge of energy. Therefore these options are incorrect

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An insulated cup contains 75 g of water at 24 °C. A 26 g sample of metal at 82.25°C is added. The final temperature of the water and metal is 28.34°C. The specific heat of the metal is 0.972 J/ g°C.

Given that :

Mass of the metal = 26 g

The specific heat of the metal = ?

Initial temperature of the metal = 82.25°C

Equilibrium temperature = 28.34°C

Mass of the water = 75 g

Specific heat of water = 4.18 J/ g°C

Initial temperature of the water = 24 °C

The specific heat capacity is given as :

26 × c × ( 82.25 - 28.34) = 75 × 4.18 ( 28.34 - 24)

26 × c × 53.91 = 313.5  × 4.34

c = 0.972 J/ g°C

Thus, the specific heat capacity of metal is 0.972 J/ g°C.

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In developed countries, the two most deadly sources of indoor pollution are cigarette smoke and radon gas.

In developed countries, the two most deadly sources of indoor pollution are:

1. Tobacco Smoke: Tobacco smoke contains numerous harmful chemicals, including carcinogens like formaldehyde and benzene. Second hand smoke, in particular, poses a significant health risk to individuals who are exposed to it indoors. Breathing in secondhand smoke can lead to various health issues, including respiratory problems, lung cancer, and heart disease.

2. Radon Gas: Radon is a naturally occurring radioactive gas that can seep into buildings through cracks in the foundation or walls. Inhaling radon gas over a long period can increase the risk of developing lung cancer. Radon is odorless and colorless, making it difficult to detect without specialized testing.

While there are other sources of indoor pollution that can be harmful, such as volatile organic compounds (VOCs) from building materials, cleaning products, and certain appliances, tobacco smoke and radon gas are considered particularly deadly due to their significant health risks and widespread prevalence in developed countries.

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