What do simple diffusion and facilitated diffusion have in common?.

Answer:

D

Explanation:

cracks from temperature changes is a type of physical weathering often known as freezing and thawing

Chymotrypsin has an α-helix that contains 2.5 turns. Approximately 9 amino acids are involved in this helix.

What is chymotrypsin?

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The question that would be reasonably answered by performing this week's lab is "what is the solubility product constant for iron (II) oxalate?"

The lab may involve measuring the concentration of iron (II) and oxalate ions in a saturated solution of iron (II) oxalate and then using this data to calculate the solubility product constant. The other questions may require different experiments or methods of analysis. For example, determining the solubility of iron (II) oxalate in water may involve measuring the amount of the compound that dissolves in a given volume of water, while determining the amount of Fe2+ in a solution may involve titration or spectroscopic analysis.

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Answer:

170.362 L

General Formulas and Concepts:

Atomic Structure

Gas Laws

Stoichiometry

Explanation:

Step 1: Define

Identify variables

[Given] 106.476 g N

[Solve] L N

Step 2: Identify Conversions

[STP] 1 mol = 22.4 L

[PT] Molar Mass of N: 14.01 g/mol

Step 3: Convert

The new Volume of gas is L. This result is obtained from Boyal's law of gases behaviour.

In the given question we have,

Consider a Sample of a gas at room temperature,

initial pressure of gas (P₁) = 712 torr

initial volume of sample gas ( V₁ ) = 20.0 L

there is no change in temperature this implies that temperature is constant through out the process.

Final or new pressure of gas (P₂) = 3560 torr

let new Volume of sample gas be V₂ .

Now, we are using the Boyal's law of gases which tells us pressure is inversely proportional to volume. It gives us pressure volume relationship at constant temperature to find out the value of new Volume . So,

P₁ / P₂ = V₁ /V₂ ---(1)

put all the values of variables in equation (1) we get, 712 / 3560 = 20. 0 / V₂

=> V₂ = ( 3560×20 )/ 712 = 100 L.

So, new Volume of sample gas is 100 L.

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The product is an alcohol of formula C2H6O

The reactants described are alkenes having the formula C2H4, and the reactants are methanol and sulfuric acid. This reaction is called an acid-catalyzed hydration reaction, in which water is added to the double bond of an alkene to produce an alcohol.

The product of this reaction is an alcohol of formula C2H6O. The carbon that was attached to the two hydrogens of the alkene is now attached to a hydroxyl group (-OH) and a hydrogen. The carbon that was attached to two methyl groups remains attached to two methyl groups. The overall formula for the product will be C2H6O.

As noted, the reactant is an alkene having the formula C2H4, where carbon 1 is attached to two methyl groups and carbon 2 is attached to two hydrogen atoms. The reactants are methanol (CH3OH) and sulfuric acid (H2SO4). Methanol serves as the solvent for the reaction and also provides a hydroxyl group for addition to alkenes. Sulfuric acid acts as a catalyst for the reaction, protonating alkenes and making them more reactive to nucleophilic attack. The overall reaction can be written as:

C2H4 + CH3OH + H2SO4 -> C2H6O + H2SO4

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Answer:

A toad on lily pad

Explanation:

have a great day

Answer:

A

Explanation:

because it doesn't have the ocean water to gain energy

Answer:

1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

queries comment me!!

Answer:

1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

Explanation:

The standard free energy of the above reaction is calculated to be 2247kJ

The standard reaction free energy can be calculated using the formula:

ΔG° = -nF E°

where:

ΔG° is the standard reaction free energy

n is the number of electrons transferred in the balanced redox reaction

F is the Faraday constant (96,485 C/mol)

E° is the standard reduction potential of the half-reactions involved in the redox reaction

First, let's write the two half-reactions for the redox reaction:

Br2 + 2 e- → 2 Br- E° = +1.087 V

12 H2O + 12 e- → 6 H2 + 12 OH- E° = -0.828 V

Since 6 electrons are transferred in the reaction, we need to multiply the second half-reaction by 6 so that the electrons cancel out:

6 (12 H2O + 12 e- → 6 H2 + 12 OH-) E° = -4.968 V

Now we can add the two half-reactions to get the overall balanced reaction:

12 (s) + 6 H2O (l) + 5 Br2 (l) → 2103 (aq) + 12 H+ (aq) + 10 Br- (aq)

The standard reaction free energy can now be calculated:

ΔG° = -nF E°

ΔG° = -(6 mol e-)(96,485 C/mol)(-4.968 V + 1.087 V)

ΔG° = +2,246,749.71 J = +2246.749 kJ

Rounding to 3 significant digits, the standard reaction free energy is:

ΔG° = +2247kJ

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Answer:

The answer is in this link

Explanation:

https://i.makeagif.com/media/7-13-2016/iEDABX.mp4

Item 12 a student mixes 40. Ml of 0. 10mhbr(aq) with 60. Ml. The [oh−] of the resulting solution is 0.02.

A solution is a mixture of two or more than two substances.

The reaction is \(\rm HBr + KOH = KBr + H_2O\)

To calculate the OH-

1 mole of HBr reacts with 1 mole of KOH

Moles of HBr = 40 mL × 0.1 M = 4 mm moles

Moles of KOH = 60 mL × 0.1 M = 6 m moles

Moles of [OH-] = 6 - 4 = 2 m moles

Volume of solution = 100 mL

[OH-] = 2mmoles/100 mL = 0.02 M

Thus, the [oh−] of the resulting solution is 0.02.

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Answer:

The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. The other types of EM radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, X-rays and gamma-rays

Explanation:

Answer:

Scale

Explanation:

Answer:

Explanation:

The new volume of the balloon can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

Since we are finding the new volume

\(V_2 = \frac{P_1V_1}{P_2} \\\)

From the question we have

\(V_2 = \frac{1 \times 1}{0.4} = \frac{1}{0.4} \\ = 2.5\)

We have the final answer as

Hope this helps you

Q.2.1 With the use of examples applicable to the case study, explain human resource forecasting. Human resource forecasting refers to the process of estimating and planning for the future staffing needs of an organization.

Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study.

Q.2.1 It involves analyzing the current workforce, identifying future workforce requirements, and developing strategies to meet those needs. In the case of Proteco Oil's Pressed Purity, human resource forecasting would involve predicting the number and types of employees needed to support the company's growth and expansion.

For example, as Pressed Purity expands its export operations into China and throughout the Asia Pacific region, they would need to forecast the additional human resources required to manage international logistics, distribution, and marketing. This may include hiring employees with expertise in international trade, language skills, and knowledge of the target markets. Human resource forecasting would also consider the need for additional staff at the state-of-the-art refinery in Kingaroy to handle increased production and quality control.

Q.2.2 Product differentiation refers to the process of distinguishing a product from its competitors by highlighting unique features, benefits, or characteristics. In the context of Pressed Purity, product differentiation is evident in several aspects of their offerings.

One example of product differentiation is their focus on being 100% Australian. This sets them apart from other oil manufacturers in Australia who may rely on imported ingredients. By promoting their Australian origin, Pressed Purity appeals to consumers who prioritize supporting local businesses and value the quality associated with Australian products.

Additionally, Pressed Purity emphasizes being chemical and preservative-free. This addresses the growing consumer demand for natural and healthier food options. By positioning their oils as naturally chemical-free, Pressed Purity differentiates themselves from competitors who may not have such a strong emphasis on natural and chemical-free products.

Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study. Time and motion study involves analyzing and improving work processes by observing and measuring the time required to complete specific tasks or activities.

In the context of the refinery, a time and motion study could be conducted to identify any inefficiencies or bottlenecks in the oil processing operations. This could involve observing workers as they perform tasks and measuring the time taken for each step of the process. By analyzing the data collected, the refinery management can identify areas where time can be saved, processes can be streamlined, and productivity can be improved.

For example, the time and motion study may reveal that certain equipment or machinery in the refinery is causing delays or requiring excessive manual labor. Based on these findings, the management can make informed decisions on investing in more efficient equipment or implementing process improvements to optimize productivity and reduce costs.

Q.2.4 Proteco Oil used the following criteria for market segmentation:

Demographic segmentation: The primary target audience for Pressed Purity is mostly females, aged 25-60+ years, with a contemporary cooking attitude. These consumers are health-conscious and seek natural and chemical-free options for themselves and their families. The secondary target audience includes men and women of all ages who consider themselves gourmet home chefs and are open to new tastes.

Psychographic segmentation: Pressed Purity targets consumers who prioritize natural and chemical-free products. By emphasizing the use of 100% natural ingredients and being genuinely Australian, Pressed Purity appeals to health-conscious consumers who value the quality and authenticity of the products they consume. They also cater to gourmet home chefs who are looking for unique and flavorful cooking options.

Geographic segmentation: Initially, Proteco Oil focused on the domestic market in Australia.

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Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

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The molarity of the KCI solution is 3 M.

To find the molarity of a KCI solution containing about 0.75 moles of KCI in 250 mL of solution, we need to use the below given formula:

Molarity (M) = moles of solute / liters of solution

Since we know that, the volume of the solution is given in milliliters, we need to convert it to liters by dividing by 1000:

250 mL / 1000 = 0.25 L

Now we can plug in the values:

Molarity (M) = 0.75 moles / 0.25 L = 3 M

Therefore, the  KCI solution has the molarity of at most 3 M.

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The species that should appear in the net ionic equation representing the reaction are Ag⁺, I⁻, and AgI.

First, let's write out the balanced chemical equation for the reaction:

AgClO₄(aq) + NH₄I(aq) → AgI(s) + NH₄ClO₄(aq)

Now, we'll write the total ionic equation:

Ag⁺(aq) + ClO₄⁻(aq) + NH₄⁺(aq) + I⁻(aq) → AgI(s) + NH₄⁺(aq) + ClO₄⁻(aq)

To find the net ionic equation, we remove the spectator ions (ions that do not change during the reaction):

Ag⁺(aq) + I⁻(aq) → AgI(s)

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Answer:

elements or compounds

Explanation:

whats the question. cause I didn't see it

answer and explanation

1 L = 1000 mL

and so to determine 7.8L we can o the calculation as follows

x mL = 1000 mL/ 1 L x 7.8 L/1 = 7800 mL/1 = 7800 mL

Doubling the external ion concentration in a mammalian cell would increase the Nernst potential of the ion by approximately 58 mV.

The Nernst equation describes the relationship between the concentration gradient of an ion across a membrane and the membrane potential required to maintain equilibrium for that ion. The equation is as follows:

\(E = (RT/zF) * ln\)(\([ion]outside/[ion]inside)\)

where:

E is the Nernst potential (membrane potential at which the ion is at equilibrium)

R is the gas constant

T is the absolute temperature

z is the valence of the ion

F is the Faraday constant

[ion]outside is the concentration of the ion outside the cell

[ion]inside is the concentration of the ion inside the cell

ln is the natural logarithm function

Assuming the valence (z) and temperature (T) remain constant, if the external ion concentration is doubled, the Nernst potential of the ion will increase by approximately 58 mV at room temperature (25°C). This can be calculated using the Nernst equation:

E2 = (RT/zF) * ln([ion]outside x 2/[ion]inside)

E1 = (RT/zF) * ln([ion]outside/[ion]inside)

Subtracting E1 from E2, we get:

ΔE = E2 - E1 = (RT/zF) * ln([ion]outside x 2/[ion]inside) - (RT/zF) * ln([ion]outside/[ion]inside)

ΔE = (RT/zF) * ln(2)

ΔE = (8.314 J/mol·K * 298 K / (1 * 96,485 C/mol)) * ln(2)

ΔE ≈ 58 mV

Therefore, doubling the external ion concentration in a mammalian cell would increase the Nernst potential of the ion by approximately 58 mV.

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Sulfurous acid is a weak acid with the molecular formula H2SO3. It has two acidic hydrogen atoms, which can be sequentially neutralized. The successive neutralizations of each acidic hydrogen of sulfurous acid are as follows:

First acidic hydrogen: H2SO3 + NaOH → NaHSO3 + H2O

The molecular equation is H2SO3 + 2NaOH → Na2SO3 + 2H2O

The net ionic equation is H2SO3 + 2OH- → SO32- + 2H2O

Second acidic hydrogen: NaHSO3 + NaOH → Na2SO3 + H2O

The molecular equation is HHSO3 + NaOH → Na2SO3 + H2O

The net ionic equation is HSO3- + OH- → SO32- + H2O

Overall reaction: H2SO3 + 2NaOH → Na2SO3 + 2H2O

The molecular equation for the overall reaction is H2SO3 + 2NaOH → Na2SO3 + 2H2O

The net ionic equation for the overall reaction is H2SO3 + 2OH- → SO32- + 2H2O

In summary, the molecular and net ionic equations for the successive neutralizations of each acidic hydrogen of sulfurous acid are given above.

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Answer:

a) The predominant Brownstead-Lowry acid- base is perchloric acid

b) A conjugate acid base pair is HClO4 and ClO4^-

c) forward reaction is favored and equilibrium position lies towards the far right

Explanation:

The molecular equation is;

HClO4(aq) + NaH2PO4(aq) -----> H3PO4(aq) + NaClO4(aq)

The net ionic equation of the reaction is;

H^+(aq) + H2PO4^-(aq) ----> H3PO4(aq)

The predominant Brownstead-Lowry acid- base is perchloric acid .

A conjugate acid base pair is HClO4 and ClO4^-

Since the both species; perchloric acid and sodium dihydrogen phosphate are both highly soluble in water yielding ions and also dissociate to a large extent in solution, the forward reaction is favoured leading to the formation of phosphoric acid. Remember that phosphoric acid does not easily dissociate in solution hence the forward reaction is faster than the reverse reaction and the equilibrium position lies towards the far right.

Answer:

d

Explanation: