Chloroplasts and mitochondria are both involved in energy conversion in cells.Select the other similarities they share. Choose ALL
that apply

Answer: B

Explanation: Cuz .

Answer: The answer to your question is A

Explanation: Hey I miss you

Answer:

C

Explanation:

Answer:C-CaCl2

Explanation:The answer is C because the chemical formula of calcium chloride is CaCl2.

Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl

To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7.  Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.

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Answer:

true

Explanation:

The frequency of a wave 2.8 x 10³ Hertz is then the wavelength of these gamma rays is 107 nm

Wavelength is the the distance between two successive crests or troughs of a wave

Here given data is

Frequency = 2.8 x 10³ Hertz

Velocity of gamma rays = 3×10⁸m/s

We have to calculate wavelength of these gamma rays?

So, wavelength = velocity/frequency

λ = v/f

λ = 3×10⁸m/s/2.8 x 10³ Hertz

λ = 107 nm

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Answer:

The type of Chemistry that studies the chemical reactions that occur in the human body, is Biochemistry.

Explanation:

That is true ofcourse so yes

Answer:

Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume)

Explanation:

Answer:

A measure of how fast products are made in a reaction.

Explanation:

i just took the test and it gave me this cuz the other person was wrong

Answer:

The stigma on the underside of the leaf allows Gas and Water Vapour to move in and out of the leaf

A better explanation of these systems is given using molecular orbital theory.

The valence bond theory hold that a  bond is formed by the sharing of two electron in a covalent bond. This bond does not account for certain systems that occur in multiple bonded systems where the simple two electron bonding model does not suffice.

Thus, valence bond theory is inadequate for describing systems with multiple adjacent  bonds that overlap, as in aromatic molecules. a better explanation of these systems is given using molecular orbital theory.

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Answer:

1 grams NH3 is equal to 0.058718113128665 mole. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between grams NH3 and mole.

Explanation:

Answer: 0.5 M

Explanation:

molarity is defined as \(\frac{mol}{L}\)

in the question, we are already given the amount of moles of Ba+ and L of water. we can just plug it into the equation, \(\frac{1}{2}\).

thus, the molarity will be 0.5 M

hope this helped! ♡

a. The final concentration of the HCl solution is 2.0 M.

The formula to be used is: C1V1 = C2V2, where C1 and V1 are the initial concentration and volume of the HCl solution, respectively, and C2 and V2 are the final concentration and volume of the diluted solution, respectively. Plugging in the values given in the problem, we get: C1V1 = C2V2, or (6.0 M)(2.0 L) = C2(6.0 L). Solving for C2,  C2 = (6.0 M)(2.0 L) / (6.0 L) = 2.0 M.

b. The final concentration of the NaOH solution is 2.0 M.

The formula to be used is the same dilution formula as in part (a): C1V1 = C2V2. However, C1 and V1 of the NaOH solution is known, as well as the final volume (V2) of the diluted solution, so, the formula to solve for the final concentration is (C2): C2 = C1V1/V2. Plugging in the values given in the problem, we get: C2 = (12 M)(0.50 L) / (3.0 L) = 2.0 M.

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Answer:

\(0.75 \times 1000 = \)

Explanation:

Use ur calculator

Answer:

750m

Explanation:

1 km is equal to 1000m. Therefore all you have to do is multiply 0.75 by 1000 and you will get 750. Hope this helps! :)

slope = Vo / 273.15; thus, a = 1/273.15. Vat = - Vo, where t = -1/a = -273.15. Since a gas's volume cannot be negative, we can infer from the last equation that 0 K should be the lowest temperature that a gas can exist in.

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When solid calcium chloride (CaCl₂) is put into water, it dissolves and dissociates into its ions, forming a strong electrolyte solution. The reaction can be written as CaCl₂(s) → Ca²⁺ (aq) + 2Cl⁻(aq). In this reaction, "s" denotes the solid state of calcium chloride, "aq" indicates the aqueous state of the ions in the solution, and the superscripts ²⁺ and ⁻ represent the charges of the calcium and chloride ions, respectively.

A strong electrolyte solution is a solution that contains a high concentration of ions and conducts electricity very efficiently. Strong electrolytes are substances that completely dissociate into ions when dissolved in a solvent, such as water. Strong electrolytes can be further classified as strong acids, strong bases, or salts.

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Answer:

25.60% of NaCl in the mixture

Explanation:

With the amount of AgCl produced we can now the moles of Cl⁻ = Moles of NaCl. With these moles we can now the mass of NaCl and, as total mass was 3.613g, it is possible to determine mass percent of NaCl in the mixture.

Moles NaCl:

2.268g AgCl * (1mol / 143.32g AgCl) = 0.01582 moles AgCl

Molar mass AgCl 143.32g/mol

0.01582 moles AgCl = Moles Cl⁻ = Moles NaCl

Mass NaCl (Molar mass: 58.44g/mol):

0.01582 moles NaCl * (58.44g / mol) = 0.9248g NaCl in the mixture

Mass percent:

(0.9248g NaCl / 3.613g) * 100 =

Answer:

71 percent

Explanation:

I looked at many sources this is correct

Answer:

71%

Explanation:

You will also here its about 3/4 or 2/3, but the absolte amount is 71%.

Melting ice cream is a physical change because it is a phase change, the water in the ice cream gains thermal energy and the inter-molecular forces are overcome and the molecules move further apart forming a liquid. It is not a chemical change because no chemical reactions occurred.  

Answer:

The absorbance of the solution is 0.21168.

Explanation:

Given that,

Wavelength = 500 nm

Molar absorptivity = 252 M⁻¹ cm⁻¹

Number of moles = 0.00140

Volume of solution = 500.0 mL

Length = 3.00 mm

We need to calculate the molar concentration

Using formula of the molar concentration

\(C=\dfrac{N}{V}\)

Where, N = number of moles

V = volume

Put the value into the formula

\(C=\dfrac{0.00140}{0.5000}\)

\(C=0.0028\ M\)

We need to calculate the absorbance of the solution

Using formula of absorbance

\(A=\epsilon C l\)

Put the value into the formula

\(A=252\times0.0028\times0.300\)

\(A=0.21168\)

Hence, The absorbance of the solution is 0.21168.

The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 3 .00 mm pathlength cell, is 0.212.

First, we will calculate the molarity of the compound, which is equal to the moles of solute divided by the liters of solution.

\(M = \frac{0.00140mol}{0.5000L} = 0.00280 M\)

Then, we will convert 3.00 mm to cm using the conversion factor 1 cm = 10 mm.

\(3.00 mm \times \frac{1cm}{10mm} = 0.300 cm\)

Finally, we will calculate the absorbance of the compound using the Beer–Lambert equation.

\(A = \epsilon \times b \times C\)

where,

\(A = \epsilon \times b \times C = \frac{252}{M.cm} \times 0.300 cm \times 0.00280 M = 0.212\)

The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 3 .00 mm pathlength cell, is 0.212.

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Answer:

It is Li FOR SURE

Explanation:

Answer:it’s Li

Explanation:

1: When 1.35 moles of oxygen are reacted with aluminum, 2 moles of aluminum will be used.

This is because the chemical equation for the reaction is Al + O2 → 2Al2O3, and thus, for every mole of oxygen, two moles of aluminum will be used.

2: When 0.0240 moles of sodium are reacted with hydrogen, 0.0240 moles of hydrogen will be produced.

This is because the chemical equation for the reaction is Na + H2O → NaOH + H2, and thus, for every mole of sodium, one mole of hydrogen will be produced.

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Answer:

magnesium

Explanation:

Magnesium has lesser valens electron than Ca, therefore the force for Mg between the nucleus and outer orbit of electron is lesser. Also, the radius will increase

Answer:

Gallium

has a larger ionic radius than (ca).

By implementing a robust process control system, Nestlé can ensure that all 150 coffee roasters in their plant are operating efficiently and producing high-quality coffee products. This helps them maintain consistency across their product line and meet customer expectations.

In a coffee roasting plant, Nestlé uses a number of continuous-feed coffee roasters to produce a variety of coffee products. The process control in this plant is crucial for ensuring the quality and consistency of the roasted coffee.

Here is a step-by-step explanation of the process control in a coffee roasting plant:

1. Monitoring:

The first step in process control is monitoring various parameters during the roasting process. This includes temperature, airflow, and time. These parameters can be measured using sensors and monitored in real-time.

2. Setting Targets:

Based on the desired roast profile and the characteristics of the coffee being roasted, targets are set for each parameter. For example, the desired temperature and time for a specific roast level are determined.

3. Adjustments:

If any parameter deviates from the set target, adjustments need to be made. For instance, if the temperature is lower than the desired level, the roaster can increase the heat input to bring it back to the target.

4. Feedback Control:

Feedback control mechanisms are used to ensure that the roasting process stays on track. This involves continuously comparing the actual parameter values with the target values and making necessary adjustments.

5. Multiple Roasters:

Since Nestlé uses multiple roasters, each roaster may have slightly different characteristics. To maintain consistency, the process control system needs to account for these variations and make appropriate adjustments for each roaster.

6. Quality Assurance:

Throughout the roasting process, quality assurance measures are in place. This includes regular sampling and testing of the roasted coffee to ensure it meets the desired quality standards.

By implementing a robust process control system, Nestlé can ensure that all 150 coffee roasters in their plant are operating efficiently and producing high-quality coffee products. This helps them maintain consistency across their product line and meet customer expectations.

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All of these can exist as the pair of concentrations in a given aqueous solution at25°C.(E)

At 25°C, the product of the concentrations of hydrogen ions and hydroxide ions in water, known as the ion product constant (Kw), is equal to 1.0 x 10^-14. This means that for any aqueous solution at 25°C, the product of [H+] and [OH-] must equal 1.0 x 10^-14.

Using this information, we can calculate the [OH-] concentration for option A, B, C and D as follows:

A) [OH-] = Kw / [H+] = 1.0 x 10^-14 / 10^-3 = 1.0 x 10^-11 M

B) [OH-] = Kw / [H+] = 1.0 x 10^-14 / 10^-7 = 1.0 x 10^-7 M

C) [OH-] = Kw / [H+] = 1.0 x 10^-14 / 10^-13 = 1.0 x 10^-1 M

D) [OH-] = Kw / [H+] = 1.0 x 10^-14 / 10 = 1.0 x 10^-13 M

We can see that all of the given concentrations, except for option E, satisfy the condition that the product of [H+] and [OH-] must equal 1.0 x 10^-14. Option E violates this condition and therefore cannot exist in an aqueous solution at 25°C.

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As per the chemical reaction ,sodium hydroxide can be used for neutralization of sulfuric acid as,2 NaOH+H₂SO₄\(\rightarrow\)Na₂SO₄ +2 H₂O.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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From the fact that the bond order would reduce from one to 0.5, it shows that the ionized specie is weaker than the hydrogen molecule that has not yet been ionized.

The term bond strength has to do with how strong the bond that holds two atoms together is. We know that the stronger the bond, the more difficult it would be to break the bond by whatever means.

In this case, we are told that when we ionize the hydrogen molecule, the strength of the bond is changed. This implies that the bond would become weaker as the bond order of the specie would reduce from one to 0.5.

Also, the lesser the bond order, the weaker the molecule is. It then follows that the hydrogen molecule that has not been ionized with a bond order of one has a stronger bond than the ionized specie that has a bond order of 0.5.

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Obtaining a National Senior Certificate is important for various reasons.

Firstly, having a National Senior Certificate proves that an individual has successfully completed their secondary education, which opens up opportunities for further studies or employment.

Secondly, it provides a sense of accomplishment and boosts confidence in oneself. Thirdly, it serves as a requirement for many job positions and may result in higher salaries. Lastly, it sets a foundation for future success and personal growth.

However, transitioning to tertiary education means adapting to various changes. Firstly, students will have more independence and will be responsible for their own time management, which requires good organizational skills.

Secondly, lectures and assignments are more challenging and require more critical thinking.

Thirdly, there is a wider range of subjects to choose from, which may require students to adjust to new learning styles. Lastly, living away from home may lead to homesickness and social pressures, making it important to maintain a support system.

Overall, obtaining a National Senior Certificate is just the beginning of a journey towards success, and adapting to these changes can lead to a successful tertiary education experience.

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Amphoteric substances are those that can act as both acids and bases, depending on the conditions in which they are found.

Amphoteric substances are those that can act as both acids and bases, depending on the conditions in which they are found. In this activity, two examples of amphoteric substances are aluminum hydroxide (Al(OH)3) and zinc hydroxide (Zn(OH)2).
Aluminum hydroxide is a common antacid that is used to neutralize stomach acid in people who experience heartburn or indigestion. It acts as a base when it reacts with the acidic environment of the stomach, neutralizing the acid and reducing the discomfort associated with acid reflux. However, it can also act as an acid when it reacts with a strong base, such as sodium hydroxide. In this case, aluminum hydroxide donates a hydrogen ion (H+) to the base, making it an acid.
Zinc hydroxide is another amphoteric substance that is used in the production of various products, including rubber, paint, and cosmetics. It can act as a base when it reacts with an acid, such as hydrochloric acid, neutralizing the acid and producing water and zinc chloride. However, it can also act as an acid when it reacts with a strong base, such as sodium hydroxide. In this case, zinc hydroxide donates a hydrogen ion (H+) to the base, making it an acid.
In summary, amphoteric substances are important in many chemical reactions and play a vital role in maintaining the pH balance of different systems in the body. Both aluminum hydroxide and zinc hydroxide are examples of amphoteric substances found in this activity, and they can act as both acids and bases depending on the conditions in which they are found.

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