1. Out of a colloid, solution and a suspension:
(a) which one has the smallest particles ?
(b) which one has the largest particles ?​

Answer:

I'll give you three examples:

Iron

Cobalt

Nickel

Answer:

A molecule of the compound carbon dioxide consists of one atom of carbon and two atoms of oxygen, so carbon dioxide is represented by the chemical formula CO2. Q: What is the chemical equation for this reaction? A: The chemical equation is: C + O2 → CO.

Explanation:

The blood buffer has a pH of 7.4, whereas the blood sample has a carbonic acid content of 0.0013 M.

The chemical compound of hydrogen, carbon, and oxygen is known as carbonic acid (H2CO3).It is produced in minute quantities when water dissolves its anhydride, carbon dioxide (CO2). Two covalent double bonds bind the core carbon atom of carbon dioxide, also referred to as carbonic acid gas, to the two oxygen atoms.

pH = pKₐ + log HCO⁻₃/ H₂CO₃

7.4 = - log(4.3 × 10⁻₇)+ log HCO⁻₃/ 0.0013m

log HCO⁻₃/ 0.0013m = 7.4 - 6.37

log HCO⁻₃/ 0.0013m = 1.03

log HCO⁻₃/ 0.0013m = 10¹°⁰³

HCO⁻₃ = 1.3 ₓ 10⁻².

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Answer:

See explanation

Explanation:

The formation of isomers is common to octahedral complexes. Isomers are different compounds with the same molecular formula but different structural formulas. Isomers have different atom to atom connections. Werner's complexes can display; polymerization, ionization, linkage, geometric and optical isomerism among others.

Isomers of coordination compounds are not easily recognizable and not easily separable in the laboratory.

The geometric, linkage and ionization isomers of the complex given in the question are shown below.

The kinetic molecular theory of matter states that:

1. Matter is made up of particles that are constantly moving.

2. A change in phase may occur when the energy of the particles is changed.

3. All particles have energy, but the energy varies depending on the temperature the sample of matter is in. This in turn determines whether the substance exists in the solid, liquid, or gaseous state.

The balanced half-reaction for the oxidation of liquid water to gaseous oxygen in basic aqueous solution is given as ,

\(4OH^{-}\)(aq) ⟶ \(O_{2} (g)\) +  \(2H_{2}O\)(l) + \(4e^{-}\)

Steps involved :

The oxidation of liquid water to gaseous oxygen can be represented as

\(H_{2} O(l)\) ⟶ \(O_{2} (g)\)

To balance this, we will first balance the number of oxygen atoms.

\(2H_{2} O(l)\) ⟶ \(O_{2} (g)\)

Now we have to balance the hydrogen atoms. Since the reaction takes place in an basic aqueous medium, hydroxide will be present in the form of its ions, dissolved in the aqueous medium.

\(2H_{2} O(l)\) + \(4OH^{-}\)⟶ \(O_{2} (g)\) +  \(4H^{+}\)+ \(4OH^{-}\)

Now the atoms on either side are balanced, but the charges are not. The reactant have a charge of +4 whereas the product is neutral. So, to balance the charge, we will add electrons to the products side, which was expected since, in an oxidation reaction, electrons are released.

\(2H_{2} O(l)\) + \(4OH^{-}\)⟶ \(O_{2} (g)\) +  \(4H_{2}O\) + \(4e^{-}\)

\(4OH^{-}\)(aq) ⟶ \(O_{2} (g)\) +  \(2H_{2}O\)(l) + \(4e^{-}\)

This is the required balanced half-reaction.

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Answer:

C

Explanation:

The law of conservation of mass states that the added mass of the reactants is equal to the added mass of the products.

A cannot be because it says that for example if you have two hydrogens in the reactants, those two hydrogens transform in for example 2 oxygen and the hydrogen disappear. that's impossible in chemistry.

B. Volume does not directly deal with that law of conservation of mass

C. Is correct, you can rearrange the atoms but if you keep the same amount of mass for each atom and you do not omit any atom, you are respecting the law of conservation of matter.

D.Same explanation for A

Answer:

I believe this is a measuring cylinder? and i think the volume is 35cm^3

Explanation:

hope this helps!

Answer:

\(V_2=5.32L\)

Explanation:

Hello there!

In this case, according to the given pressure, temperature and volume, it is possible for us to calculate the final volume via the combined ideal gas law:

\(\frac{P_2V_2}{T_2}=\frac{P_1V_1}{T_1}\)

In such a way, we solve for the final volume, V2, to obtain:

\(V_2=\frac{P_1V_1T_2}{T_1P_2}\)

Then, we plug in the given data to obtain:

\(V_2=\frac{1.19atm*2.3L*380K}{326K*0.60atm}\\\\V_2=5.32L\)

Regards!

Answer:

Therefore, 1.00 mole of the gas is present in the container.

Explanation:

The following data were obtained from the question:

Volume (V) = 22.41L

Temperature (T) = 273K

Pressure (P) = 101.325 kPa

Gas constant (R) = 8.31 L.kPa/mol.K.

Number of mole (n) =...?

The number of mole of the gas in the container can obtained by applying the ideal gas equation as illustrated below:

PV = nRT

Divide both side by RT

n = PV /RT

n =101.325  x 22.41 / 8.31 x 273

n = 1.00 mole.

Therefore, 1.00 mole of the gas is present in the container.

Answer:

1 mole of gas is contained in 22.41 liters at 101.325 kPa and 0ᴼC

Explanation:

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P*V = n*R*T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas.

In this case:

Replacing:

1 atm*22.41 L=n* 0.082 \(\frac{atm*L}{mol*K}\)*273 K

Solving:

\(n=\frac{1 atm*22.41 L}{0.082\frac{atm*L}{mol*K} *273 K}\)

n=1  mole

1 mole of gas is contained in 22.41 liters at 101.325 kPa and 0ᴼC

The Statement "All colors are transmitted through the drink except for blue which is absorbed by the drink." is correct on what happens to a light as it passes through a blue drink.

Light is a form of electromagnetic radiation that is visible to the human eye. It is a type of energy that travels through space in the form of waves and does not require a medium to propagate. Light is produced by the movement of charged particles and travels at a constant speed of about 299,792,458 meters per second in a vacuum.

When light passes through a blue drink, the liquid absorbs the blue portion of the spectrum and allows the other colors to pass through. This is because the blue pigment in the drink selectively absorbs the blue portion of the spectrum, which is why we perceive the liquid as blue. The other colors in the visible spectrum are transmitted through the drink and are not affected.

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Describe the relationship between evaporation and a rainy climate in one or two sentences.

A liquid transforms into a gas during evaporation. It is easy to visualize when raindrops "vanish" from puddles on a hot day or when wet clothing dries in the heat. Instead of really dissipating in these situations, the liquid water is evaporating into a gas known as water vapor. Global evaporation takes place.

Evaporation occurs on surfaces. Because it happens when molecules with more kinetic energy from the top layer of the liquid escape into the air, evaporation is a surface phenomenon.

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To answer this question, we have to divide the amount of heat released by the change in temperature:

It means that the correct answer is the last choice 5.652kJ/°C.

Answer:

Curbing global carbon dioxide emissions has been a challenge, primarily because they are being driven higher by countries with low per capita emissions.

Explanation:

"just trust me bro"

The air is cooled by the currents, which causes it to rise and warm when it crosses land. This warming causes the air to hydrate, then afterward precipitates as the air passes deeper inland.

The impacts of grasslands hitting the sea are typically astounding. Namibia and or the Western Sahara constitute the place where the African desert meets north Mediterranean Sea. Moreover, the Sahara extends eastward to the Red Sea. The Atacama Desert and the Pacific Ocean meet strikingly in northern Chile.

Cold ocean currents that move near the shore drive coastal deserts to emerge. The air is stabilised by the chilly winds, which also prevent cloud development. It produces a significant amount of fog. A dense blanket of minute water droplets which are too light to disperse as rain makes up a fog.

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Answer:

Ionic compounds dissolve in water because the water molecules hydrate the ions.

Explanation:

To dissolve an ionic compound, the water molecules must be able to stabilize the ions that result from breaking the ionic bond.

They do this by hydrating the ions.

Water is a polar molecule. It has a permanent dipole.

The

O

atom has a partial negative charge, and the

H

atoms have a partial positive charge.

When an ionic compound is added to water, the anion is attracted to partially positive hydrogen atom of water and cation is attracted to partially negative oxygen atom of water.

Ionic compound or electrovalent compound is a type of compound  which is formed between the  two elements when there is an exchange of electrons which takes place between  the atoms resulting in the formation of ions.

When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge  and forms an ion called the anion.

As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond.

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The formation of a peptide bond between two amino acids is an example of a condensation reaction.

The formation of a peptide bond between two amino acids is an example of a condensation reaction. In a condensation reaction, two molecules join together to form a larger molecule, and a smaller molecule, usually water, is released as a byproduct. In the case of a peptide bond formation, the carboxyl group of one amino acid reacts with the amino group of another amino acid, releasing water and forming a peptide bond. So, the correct answer is B) condensation.

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Answer:

Oxygen-16

Explanation:

Answer:

The answer is Sedimentary

Explanation:

Thank you so much if that helps you!!!!

Answer:

231.735 g/mol

Explanation:

This reaction is catalyzed by an enzyme called a hydrolase, and it takes place in a matrix.

By converting l-arginine to l-ornithine and urea, the ureohydrolase arginase, an enzyme that contains manganese, catalyzes the last stage in the urea cycle to get rid of harmful ammonia.

It is changed by the enzyme arginase into L-ornithine, a building block for polyamines and urea, both of which are necessary for the urea cycle. Arg is a precursor of creatine, which is responsible for Arg catabolism, the production of agmatine, and the synthesis of proteins. Creatine is crucial for the energy metabolism of muscle, neuron, and testicles.

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1) Mechanical agent

2) Biological agent

3) Physical agents

4) Physical agents

Weathering is the process by which rocks, minerals, and soils are broken down into smaller particles by physical, chemical, and biological agents.

These agents of weathering can act together or independently to break down rocks and minerals into smaller particles, which can then be transported by wind, water, and other geological processes to create new landforms and soil. Weathering plays an important role in the formation of soils and in the shaping of the Earth's surface over time.

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Answer:

Electrolysis of Al₂O₃: 4Al³⁺ (s) + 6O²⁺ (g) → 4Al (s) + 3O₂ (g)

Reduction of Elemental Fe: 2Fe₂O₃ (s) + 3C (s) → 4Fe (s) + 3CO₂ (g)

Atom Economy for Electrolysis of Al₂O₃: 52.9227%

Atom Economy for Reduction of Fe₂O₃: 62.8534%

Explanation:

Step 1: Define Compounds

Aluminum Oxide - Al₂O₃

Iron Oxide - Fe₂O₃

Step 2: RxN

Al₂O₃ (s) → Al (s) + O₂ (g)

Fe₂O₃ (s) + C (s) → Fe (s) + CO₂ (g)

Step 3: Balance RxN

2Al₂O₃ (s) → 4Al (s) + 3O₂ (g)

This is ONLY the decomposition reaction for Aluminum oxide, NOT the electrolysis.

2Fe₂O₃ (s) + 3C (s) → 4Fe (s) + 3CO₂ (g)

This is the final single-replacement reaction for the reduction of Iron Oxide to Iron.

Step 4: Electrolysis of Al₂O₃

We will have to use oxidation-reduction reactions (half-reactions). Let's break up the reaction into it's elements.

Al³⁺ + ? → Al

Al³⁺ + 3e⁻ → Al

O²⁻ → O₂ + ?

2O²⁻ → O₂ + ?

2O²⁻ → O₂ + 4e⁻

Our half reactions:

Al³⁺ + 3e⁻ → Al

2O²⁻ → O₂ + 4e⁻

4 (Al³⁺ + 3e⁻ → Al) = 4Al³⁺ + 12e⁻ → 4Al

3 (2O²⁻ → O₂ + 4e⁻) = 6O²⁻ → 3O₂ + 12e⁻

4Al³⁺ + 12e⁻ + 6O²⁺ → 4Al + 3O₂ + 12e⁻

4Al³⁺ (s) + 6O²⁺ (g) → 4Al (s) + 3O₂ (g)

Step 5: Atom Economy

According to GCSE and my own deciphering, your equation for Atom Economy is essentially calculating for something similar to percent yield (but not quite).

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{Molar \hspace{3} Mass \hspace{3} of \hspace{3} Product}{Molar \hspace{3} Mass \hspace{3} of \hspace{3} All \hspace{3} Reactants} \cdot 100 \%\)

Molar Mass of Al - 26.98 g/mol

Molar Mass of O - 16.00 g/mol

Reactants: 4(26.98 g/mol) + 6(16.00 g/mol) = 203.92 g/mol

Products (Al as end product): 4(26.98 g/mol) = 107.92 g/mol

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{107.92 \hspace{3} g/mol}{203.92 \hspace{3} g/mol} \cdot 100 \%=52.9227 \%\)

Molar Mass of Fe - 55.85 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of C - 12.01 g/mol

Reactants: 4(55.85 g/mol) + 6(16.00 g/mol) + 3(12.01 g/mol) = 355.43 g/mol

Products (Fe as end product): 4(55.85 g/mol) = 223.4 g/mol

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{223.4 \hspace{3} g/mol}{355.43 \hspace{3} g/mol} \cdot 100 \%=62.8534\%\)

Step 6: Check for significant figures

Since we are not given any values, we don't really need to change any numbers to fit sig fig rules.

In order to obtain more accurate results as well as to improve the efficiency of the laboratory procedure, the following recommendations are given:

Improving laboratory results can be achieved through several strategies aimed at enhancing experimental conditions, equipment, procedures, and data analysis.

Some possible methods for improving laboratory performance:

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Answer:

Examples of longitudinal waves include: sound waves. ultrasound waves. seismic P-waves.

Explanation:

Answer:

The mass of oxalic acid dihydrate required to prepare 250.00 ml of a 0.200 M acid solution is 13.36 grams.

To calculate the mass of oxalic acid dihydrate required to prepare a 0.200 M solution, we need to first determine the molecular weight of the compound. The molecular weight of oxalic acid dihydrate is 126.07 g/mol. Next, we can use the formula for calculating the mass of a compound needed to prepare a solution:

mass = (molarity × volume × molecular weight) / 1000

Plugging in the values, we get:

mass = (0.200 mol/L × 0.250 L × 126.07 g/mol) / 1000 = 3.1535 g

However, we need to account for the fact that oxalic acid is diprotic, meaning each molecule has two acidic hydrogen atoms that can dissociate. Therefore, we need to multiply the result by 2:

mass = 3.1535 g × 2 = 6.307 g

Finally, since we are given the dihydrate form of oxalic acid, we need to add the mass of the two water molecules that are part of each molecule of the compound: mass = 6.307 g + 2 × 18.02 g/mol = 13.36 g

Therefore, the mass of oxalic acid dihydrate required to prepare 250.00 ml of a 0.200 M acid solution is 13.36 grams.

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