CAN U GUYS HELP ME ON THIS ONE PLEAASE IM TOO DUMB YO ANSWER THIS ONE IM NOT EVEN LYING TOO PLUS THIS ASSIGNMENT WAS DUE LAST FRIDAY :(

CH3Br Draw out the work for all 4 steps for the Lewis structure.

Grading Criteria:
a. Correctly count the total valence electrons (2pt)
b. Correctly identify and draw the location of the central atom and surrounding atoms. (2pt)
c. Correctly draw the total amount and location of the electrons on the lewis structure. (2pt) ​

Answer

The molarity (M) of the H3PO4 solution = 1.0 M

Explanation

Given:

Mass of H3PO4 = 49.0 grams

Volume of the solution = 500 mL = 500/1000 = 0.5 L

What to find:

The molarity (M) of the H3PO4 solution.

Step-by-step solution:

Step 1: Convert 49.0 grams H3PO4 to moles using the mole formula.

The molar mass of H3PO4 = 97.994 g/mol

So,

Step 2: Calculate the molarity of the solution using the molarity formula.

Putting mole = 0.50 mol and volume = 0.50L into the formula, we have;

The molarity (M) of the H3PO4 solution = 1.0 M

The letter "G" is a symbol that represents a sound in the English language, option 3.

A symbol in the English language is a character or mark that represents a specific sound, word, or concept. In writing, symbols include letters (such as "A," "B," and "C") and punctuation marks (such as "." and ",").

These symbols are used to represent the sounds of spoken language and to convey meaning through written text. Other examples of symbols in the English language include numbers, mathematical symbols, and musical notation. The use of symbols allows us to communicate ideas, thoughts, and information in a clear and efficient manner.

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Question 5

Answer

D - 7.15 g O2

Explanation

Given:

Balanced chemical equation:

mass of Cr = 15.5 g

Required: mass of Oxygen

Solution:

Step 1: Find the moles of Cr

n = m/M where n is the number of moles, m is the mass and M is the molar mass

n = 15.5 g/51,9961g/mol

n = 0.298 mol

Step 2: Use stoichiometry to find the moles of O

The molar ratio between Cr and O is 4:3

Therefore the number of moles of O = 0.298 x (3/4) = 0.224 mol

Step 3: From the moles, we can find the mass of O

m = n x M

m = 0.224 x 31.998

m = 7.168 g which is closer to D = 7.15 g

Answer:

1). Scientific

2). Plating the diluted bacteria on media that supports the growth of only living micro organisms. Statistically accurate.

The three states of matter are solid - example is stone, liquid - example is water and gas - example is air.

A matter is referred to as a substance which has a certain mass and takes up a certain volume in space.

For example pen, pencil, toothbrush, water, milk are matters as well as car, bus, bicycle is also a matter. So matter is considered as a living thing and a non-living thing.

There are three states of matter and they include;

They have different properties, which can be explained by looking at the arrangement of their particles. This is the theoretical temperature at which particles have the least amount of energy and the slowest movement.

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Answer:

9.18 L

Explanation:

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) What volume of H2(g) is produced when 7.40 g Al(s) reacts at STP?

first write, then balance the equation

Al + HCl-------------> AlCl3 + H2

2Al + 6HCl-----------> 2AlCl3 + 3H2 2 MOLE  

2 moles of Al produce 3 moles of H2

Al is 7.4/27 =

0.27 moles of Al.

this will produce

0.27 X 3/2 moles of H2 =

0.41 moles of H2

PV =nRT

for STP, P = 1 atm, T = 273.2, R IS 0.082

V= (0.41) X 0.082 X 273,2/1 = 9.18 L

CHECK 1 mole of gas at STP has a volume of 22.4 L

0.41 moles then has a volume of 00.41 X 22.4L = 9.,18 L

Let's analyze each characteristic in relation to the processes of fission and fusion:

a. Very high temperatures are required to initiate the reaction.

b. Less radioactive waste is produced.

c. Hydrogen nuclei are the reactants.

d. Large amounts of energy are released when the nuclear reaction occurs.

Summarizing the characteristics for fission and fusion:

Fission:

Fusion:

Based on these characteristics, we can conclude that:

a. Very high temperatures are characteristic of fusion.

b. Less radioactive waste being produced is characteristic of fusion.

c. Hydrogen nuclei as reactants are characteristic of fusion.

d. Large amounts of energy being released are characteristic of both fission and fusion.

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Here are the observations that indicate that a reaction took place when 25 g of sodium bicarbonate is added to the 6 M HCl solution:Evolution of carbon dioxide gas,increase in temperature,precipitation of a solid product.

Sodium bicarbonate is a base, and hydrochloric acid is an acid. When these two substances react, they produce carbon dioxide gas. The carbon dioxide gas will bubble out of the solution, creating a fizzing or effervescence.

The reaction between sodium bicarbonate and hydrochloric acid is exothermic, meaning that it releases heat. The temperature of the solution will increase as a result of the reaction.

The color of the solution may change as a result of the reaction. For example, the solution may turn cloudy or milky.

A solid product may precipitate out of the solution as a result of the reaction. For example, the product of the reaction between sodium bicarbonate and hydrochloric acid is sodium chloride, which is a white solid.

Thus,if the student does not observe any of these observations, then it is likely that no reaction took place.

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The limiting reagent in a chemical reaction is HCl (aq); the maximum output of CO2/mol is 0.05; and the reactant that is consumed first is CO2.

The limiting reactant, sometimes referred to as the limiting reagent, regulates how much product is produced in a chemical process. If the limiting reactant has been found, the theoretical yield of the reaction may be calculated.

The limiting reagent is the one that will completely consume itself in a chemical process. Once that reactant has been used up, the reaction cannot go on. As a result, it stops the reaction from getting stronger. The excess reagent would have continued to react if the other reactant hadn't been consumed.

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Answer:Any acid that dissociates 100% into ions is called a strong acid. If it does not dissociate 100%, it is a weak acid.

Explanation:acid. (d) Water can act as a Brønsted-Lowry base. ... (b) Give the conjugate acid of the following Brønsted-Lowry bases: ... 16.21 Label each of the following as being a strong base, a weak base, or a species with ... (C) NH Weak base, Netyt is a weak acid ... CHz Lo0H is stronger acid than Hys, so equilibrinus lies to right.

Answer:

So the answer is gonna be how to get enough energy for your daily life

Explanation:

Sometimes the human body cant get enough energy from the food and protein the food gives out.

Confrontation, compromise, and withdrawal are all forms of conflict management. In conflict management, confrontation means facing up to or standing up to someone, while withdrawal means retreating from a relationship or situation when there is no possibility of conflict resolution.

Similarly, compromise is a way of resolving a conflict or disagreement by giving up something or meeting someone halfway. When a conflict arises, people use different strategies to manage it. Conflict management strategies can be classified into two broad categories; constructive conflict management and destructive conflict management. Constructive conflict management strategies are strategies used to resolve conflicts peacefully without any harm to either party. Such strategies include confrontation, compromise, problem-solving, negotiation, and collaboration. Conversely, destructive conflict management strategies are those that are aimed at causing harm, such as physical violence, emotional abuse, or verbal attacks.

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Answer:

a. All elements are composed of atoms.

Explanation:

dalton's atomic theory says that Compounds are composed of atoms of more than 1 element. The relative number of atoms of each element in a given compound is always the same. Chemical reactions only involve the rearrangement of atoms. Atoms are not created or destroyed during chemical reactions.

Answer:

The heat absorbed by water is 39243.75 J.

Explanation:

Given data:

Mass of water = 375.0 g

Heat absorbed by water= ?

Initial temperature = 10.0°C

Final temperature = 35.0 °C

The specific heat capacity of water = 4.186 j/g.°C

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT = 35°C - 10°C

ΔT = 25°C

Q = m.c. ΔT

Q = 375.0 g× 4.186 j/g °C × 25°C

Q = 39243.75 J

The heat absorbed by water is 39243.75 J.

A chemist would count the number of atoms in a piece of aluminum wire by making use of Avogadro's number.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

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Galvanic cells or voltaic cells can generate electricity through the use of a spontaneous reaction.

A galvanic cell or voltaic cell can be described as an electrochemical cell in which electricity is generated from spontaneous Oxidation-Reduction reactions.

A common apparatus consists of two different metals or electrodes, each immersed in different beakers containing their respective ion solution, They are connected by a salt bridge or a porous membrane.

Galvanic cells carry the spontaneous redox reactions but have been designed to harness the energy generated from the said reaction. The electromotive force of the cell can be defined as the difference between the half-cell potentials which are measured by the two electrodes in the electrolyte.

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When all the hydrogen is rushed out of the star core helium gas arises and fuse into. Helium is the lightest gas in the star. A star tries to build stability between its own gravity, which maintains a reasonable level of control, and the outwards strain from continuous nuclear combination processes occurring at its center.

The process which contributes to the power supply of the sun and stars is called fusion. Two hydrogen atoms combine to form one helium atom in one example of this kind of reaction. A portion of the hydrogen's mass is converted into energy during this process. The main sequence star of the is hydrogen to helium fusion.

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The rate at which N\(_{2}\) disappears is 0.016 M/s, while the rate at which H\(_{2}\) disappears is 0.0213 M/s.

In the balanced chemical equation N\(_{2}\)(g) + 3 H\(_{2}\) (g) → 2NH\(_{3}\)(g), the stoichiometric coefficients represent the mole ratios between the reactants and products.

Since the reaction rate is given for NH\(_{3}\), we can determine the rates of disappearance of  N\(_{2}\) and H\(_{2}\) by comparing their stoichiometric ratios in the reaction.

The stoichiometric ratio between  N\(_{2}\) and NH\(_{3}\) is 1:2, meaning for every mole of  N\(_{2}\) consumed, 2 moles of NH\(_{3}\) are produced. Therefore, the rate of disappearance of  N\(_{2}\) is half of the rate of formation of NH\(_{3}\).

Similarly, the stoichiometric ratio between H\(_{2}\) and NH\(_{3}\) is 3:2. This means that for every 3 moles of H\(_{2}\) consumed, 2 moles of NH\(_{3}\) are produced. Therefore, the rate of disappearance of  H\(_{2}\) is (2/3) times the rate of formation of NH\(_{3}\).

Given the rate of formation of NH\(_{3}\) as 0.032 M/s, the rate of disappearance of  N\(_{2}\) would be 0.016 M/s (0.032 M/s ÷ 2), and the rate of disappearance of  H\(_{2}\) would be approximately 0.0213 M/s (0.032 M/s × 2/3).

Therefore, the rate of disappearance of  N\(_{2}\) is 0.016 M/s, and the rate of disappearance of  H\(_{2}\) is 0.0213 M/s.

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The number of carbon atoms present in 1.25 mol of silver acetate is 1.875 × 10²³.

Avogadro's number is define as the number of atoms of any substance present in one mole of that substance, and it is equal to 6.022 × 10²³, i.e.
1 mole = 6.022 × 10²³ atoms/mol

Given moles of silver acetate = 1.25 moles

Number of atoms of silver acetate in 1.25 moles = 1.25 × 6.022 × 10²³ = 7.5×10²³

Molecular formula of silver acetate is CH₃CO₂Ag, means in this molecule total 8 atoms are present so number of carbon atom will be calculated as:

Carbon atoms = (2× 7.5 × 10²³) / 8 = 1.875 × 10²³ atoms [here we multiply by 2 because 2 atoms of carbon is present in olecule]

Hence required atoms of carbon is 1.875 × 10²³.

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The amount of the 1.14% by mass KCl solution that will contain 20.3 grams of KCl will be 1780.70 grams.

The amount of KCl required is 20.3 grams.

The amount has to be obtained from a solution of 1.14% by mass KCl solution.

It means, 100 g of this solution will contain 1.14 grams.

So, we can write,

1.14 grams of KCl = 100grams solution

1 gram KCl = 100/114 grams solution.

20.3 grams of KCl = 20.3 x 100/1.14 grams solution.

20.3 grams of KCl = 1780.70 grams.

So, the mass of the solution will which has 20.3 grams of KCl will be 1780.70 grams.

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Distance =

\( \sqrt{ {(6 + 6)}^{2} + {(8 + 8)}^{2} } = \sqrt{144 + 256} = \sqrt{400} = 20\)

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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Bacterial drug resistance is a growing problem in hospitals worldwide. Antibacterial medications are becoming less effective, and "superbugs" like MRSA and C.

Difficile are becoming increasingly common in the human population. The excessive use of antibacterial medicines is believed to be contributing to the rapid evolution of these drug-resistant bacteria.These drug-resistant bacteria become more common in the population through a series of steps. Following are the steps from first to last:1. A single bacterium develops a resistance to the drug due to a random genetic mutation.2. Drug-resistant bacteria build a large population in the host.3. An antibacterial drug is used to treat an infection which kills off many resistant bacteria.4. The host transmits the drug-resistant bacteria to the outside world.Mutations, genetic changes in an organism's DNA, are responsible for the drug resistance development. When an antibiotic drug is taken, it eliminates bacteria that aren't resistant to it. However, if a bacterium develops a mutation that allows it to survive in the presence of the drug, it will continue to divide and replicate itself. This increases the number of drug-resistant bacteria in the host's body, making it more difficult to treat the infection.

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Answer:

More context pls

Explanation:

mass of an atom is concentrated in the nucleus

430 mL of water is found in a 455 mL bottle of vinegar.

The bottle of vinegar is labeled as 5.00% solution of acetic acid, meaning that 5% of the solution is acetic acid and the rest is water.

To find the amount of water in the bottle, we can subtract the portion that is acetic acid from the total volume.

This can be done by multiplying the volume of the bottle by the percentage of acetic acid, and then subtracting this result from the total volume:

Volume of water = Total volume - (Total volume * % acetic acid)

Volume of water = 455 mL - (455 mL * 5%) = 455 mL - (455 mL * 0.05) = 455 mL - 22.75 mL = 432.25 mL

So, there is approximately 432.25 mL of water in a 455 mL bottle of vinegar.

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Answer:

Explanations:

The formula for calculating the pH of the solution is given as:

Given that the pH is 2, then;

Hence the concentration of the hydronium ion is 0.01M

Since the pH of the solution is less than 7, hence the solution is acidic

According to markovnikov's rule of the electrophilic addition to an alkene, the electrophile, usually a proton, is more likely to add to the less-substituted carbon in a double bond.

With additional substituents present in this configuration, the intermediate carbocation is stabilised by being located on the more-substituted carbon.

The nucleophile will then end up in a double bond on the more-substituted carbon in a reaction that follows Markovnikov's rule.The outcome of some addition reactions is described by Markovnikov's rule or Markownikoff's rule in organic chemistry. Vladimir Markovnikov, a Russian scientist, created the rule in 1870.

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ANSWER: It's (ii) I do believe

The sugar is fermented and the ethanol and carbon dioxide are produced. The fermentation of ethanol is used in bread baking and the fermentation found in grapes makes beer.

Fermentation is the mechanism by which sugar is converted into alcohol. Ethanol Fermentation can be described as a biological process that converts sugars such as glucose, sucrose, and fructose into cellular energy by producing ethanol and carbon dioxide as a side effect.

Alcoholic fermentation is called anaerobic since yeast conducts this transformation in the absence of oxygen. The fermentation of ethanol has applications such as the manufacture of alcoholic drinks, ethanol fuel manufacture, and bread baking.

Fermentation of the natural sugars can be seen in grapes creating wine or beer as well as in apples and pears producing cider and Perry, respectively. Alcoholic fermentation takes place in species of fish, where it offers energy when oxygen is scarce.

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