predict the major organic product and draw the mechanism (curved arrows) for the following reaction. h i 1. h2nnh2, tsoh 2naoh, h2

If the plate you selected had only been inoculated with 0.1 ml of the dilution, it would have less bacterial colonies and would affect your experiment's results.Inoculation is the process of introducing a sample of bacteria into a culture medium to propagate it.

It entails the injection of bacterial cultures into the experimental environment to monitor their growth and conduct research on them.What happens when a plate is inoculated with a smaller amount of bacteria?A lower bacterial count may occur on the plate if a smaller amount of bacteria is inoculated. When this occurs, the experiment's results may be affected. If the initial number of bacteria is smaller, the number of colonies on the agar plate may be lower. It's critical to get the proper inoculum concentration on the agar plate to obtain accurate results.

How to prevent the plate from being inoculated with a small amount of bacteria?To ensure that the bacteria are properly inoculated, a standard operating procedure must be established. For example, before inoculating the bacteria into the media, the culture should be mixed well and diluted properly. Then, you can obtain a good quantity of bacteria in the inoculum loop, dip it into the broth culture, and streak it onto the agar plate.  As a result, you will be able to obtain an optimal inoculum size. This ensures that the bacteria are evenly distributed over the plate and that they have sufficient room to grow.

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The molecular equation representing aqueous acetic acid neutralized by aqueous barium hydroxide:

2CH₃COOH(aq) + Ba(OH)₂(aq) → (CH₃COO)₂Ba(aq) + 2H₂O(l).

CH₃COOH is acetic acid

Ba(OH)₂ is barium hydroxide

(CH₃COO)₂Ba is barium acetate

H₂O is water

Acetic acid is an acid and barium hydroxide is a base. They form salt and water and neutralization reaction takes place.

Neutralization is is reaction in which an acid (in this example acetic acid CH₃COOH) and a base (in this example barium hydroxide) react quantitatively with each other.

Reactants and products are present in undissociated form in molecular equations.

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The balanced equation is given as :

2CH₃OH  +  3O₂  ---->   2CO₂   +  4H₂O , The coefficient of methanol is 2.

The reaction of the methanol that is  CH₃OH , when it is burned in the presence of the air  is given below :

CH₃OH  +  O₂  ---->   CO₂   +  H₂O

To balanced equation , the number of the atoms in the reactant side is equals to the product side.

    Reactant       Product

C          1                  1

H          4                  2

O          3                 3

to balanced the equation , multiply the , 2 in  CH₃OH , 3 in O₂ and the 2 in CO₂  and the 4 in  H₂O. we get :

2CH₃OH  +  3O₂  ---->   2CO₂   +  4H₂O

The above equation is now balanced. The coefficient if methanol is 2.

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Answer:

Carbon, in all its states of matter.

Explanation:

The given options are: Wood burning, Evaporation of alcohol, Photosynthesis, Ice melting. Out of these given options, the process that can be classified as an exothermic process is Wood burning.

An exothermic process refers to a process that releases heat. It is denoted by a negative enthalpy of reaction (∆H < 0). Wood burning is an example of an exothermic reaction. Wood reacts with the oxygen in the air to produce carbon dioxide, water vapor, heat, and light energy. This means that wood burning is a process that releases heat into the environment, so it is classified as an exothermic process. Wood burning is the only process among the given options that releases heat, making it the exothermic process. Hence, the correct option is Wood burning.

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Answer:

B: nuclear energy.

Explanation:

It is emission-free and it saves 2.4 billion tons of carbon emissions per year. Also, the level of hazard of nuclear waste does decrease during the time.

Hope that helps!

The pressure in the cylinder is 2.63 GPa.

To calculate the pressure in the cylinder, we can use the ideal gas law equation, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.

Given:

Volume (V) = 13.0 L

Mass of oxygen gas (m) = 47.1 g

Temperature (T) = 336 K

To find the number of moles of oxygen gas (n), we need to convert the mass of the gas to moles. Using the molar mass of oxygen (O2), which is approximately 32 g/mol, we can calculate:

n = m / M

n = 47.1 g / 32 g/mol

n ≈ 1.47 mol

Now, we can substitute the known values into the ideal gas law equation:

P * V = n * R * T

Solving for P:

P = (n * R * T) / V

P = (1.47 mol * 8.314 J/(mol·K) * 336 K) / 13.0 L

Converting the units:

P ≈ (1.47 mol * 8.314 J/(mol·K) * 336 K) / (13.0 L * 1000 L/1 m^3) ≈ 2.63 GPa

Therefore, the pressure in the cylinder is approximately 2.63 GPa (gigapascals).

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Answer:

B and C

Explanation:

Answer:

C

Explanation:

K,Na, Li all elements found in group 1

Answer:

Percent error = 3.5%

Explanation:

Percent error is a way to measure the accuracy of your experiment (How close is the measurement regard to theoretical value). The formula is:

|Measure - Theoretical| / Theoretical * 100

Where measure was 96.5°C and theoretical 100.0°C

|96.5°C - 100°C| / 100°C * 100

Calorimetry is the scientific study of the transformation of heat energy. A calorimeter is a device that is used to conduct these types of experiments. It is used to determine the heat transfer that occurs between two bodies that are at different temperatures.In the given problem, a piece of gold with a mass of 15.23 g and an initial temperature of 54 °C was dropped into a calorimeter that contains 28 g of water.

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Answer:rotting or rusting because they both make changes

Explanation:

Answer:Answer is d I think

Explanation:have a good day

strongest bond is the triple bond

The weakest is the single bond

Explanation:

Answer:

a) Trichloromethyl

b) Trinitrogen Pentoxide

c) Carbogen

Explanation:

B) 1 and 3

it's the right answer

Answer:

For 3rd question, the answer is option D

Answer:

A. 2NaBr + Ca(OH)₂ —> CaBr₂ + 2NaOH

The coefficients are: 2, 1, 1, 2

B. 2NH₃ + H₂SO₄ —> (NH₄)₂SO₄

The coefficients are: 2, 1, 1

Explanation:

A. __NaBr + __Ca(OH)₂ —> __CaBr₂ + __NaOH

The above equation can be balance as follow:

NaBr + Ca(OH)₂ —> CaBr₂ + NaOH

There are 2 atoms of H on the left side and 1 atom on the right side. It can be balance by writing 2 before NaOH as shown below:

NaBr + Ca(OH)₂ —> CaBr₂ + 2NaOH

There are 2 atoms of Na on the right side and 1 atom on the left side. It can be balance by writing 2 before NaBr as shown below:

2NaBr + Ca(OH)₂ —> CaBr₂ + 2NaOH

Thus, the equation is balanced. The coefficients are: 2, 1, 1, 2

B. __NH₃ + __H₂SO₄ —> __(NH₄)₂SO₄

The above equation can be balance as follow:

NH₃ + H₂SO₄ —> (NH₄)₂SO₄

There are 2 atoms of N on the right side and 1 atom on the left side. It can be balance by writing 2 before NH₃ as shown below:

2NH₃ + H₂SO₄ —> (NH₄)₂SO₄

Thus, the equation is balanced. The coefficients are:

2, 1, 1

The correct answer is: The hammer hits the ground before the feather on Earth, but the feather hits the ground first on the moon. This is because of the low gravity on the moon, which means the feather will not be affected by the same amount of force as the hammer.

Gravity is a natural phenomenon by which all physical bodies attract each other. It is most commonly experienced as the weight force that objects with mass exert on each other, though it also manifests itself through other phenomena such as tidal forces. Gravity is one of the four fundamental forces of nature and is the weakest of the four. It has an infinite range, though its effects become increasingly weaker on farther objects.

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Answer:

B. Increase the mass of one of the objects.

E. Decrease the distance between the objects.

Explanation:

To effect an increase in the gravitational force between two objects, the mass of both objects should be increased and the distance between them reduced.

This is derived from the Newton's law of universal gravitation:

Therefore, if the mass of the two bodies are increased and the distance between them reduced, the gravitational force of attraction will increase.

Answer:

E. Decrease the distance between the objects

B. Increase the mass of one of the objects

Explanation:

C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.

In the Millikan oil droplet experiment, the negatively charged oil droplets are subjected to an electric field created by the charged plates. The electric force (Fe) acts on the oil droplet in a direction opposite to the gravitational force (Fg). When Fe is greater than Fg, the electric force overcomes the gravitational force, causing the negatively charged oil droplet to experience an upward force. As a result, the oil droplet moves freely upward toward the negatively charged plate.

Option B is incorrect because if Fe is equal to Fg, the forces balance each other, resulting in a stationary droplet. However, the question states that Fe is increased until it is greater than Fg, implying that the droplet is no longer stationary but moves in response to the electric force.

Therefore, option C is the correct answer, as it describes the effect of an electric field on the motion of a negatively charged oil droplet in the Millikan oil droplet experiment.

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The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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Answer:

the water displaced will not help the student find the correct volume because you can not accurately calculate it. you have to get the water when it is settled then you place the wood in.

Explanation:

The number of ionic bond is zero. Water is not classified as a salt because it is not an ionic compound.

Salts are typically defined as ionic compounds that are formed by the reaction of an acid and a base. In this type of reaction, the acid donates a hydrogen ion (H+) to the base, which accepts it to form a positively charged ion (cation) and a negatively charged ion (anion).

These ions are then attracted to each other and form an ionic bond, resulting in the formation of salt but in this case, the H and O bond is covalent i.e the electron is not donated but shared between hydrogen and oxygen atoms

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Given :

On a shelf sits a bottle of NaCl solutions with a molar concentration of 2.50 M and a total volume of 300 mL. If 15.0 mL of the solution is added to 985 mL of pure water .

To Find :

The molar concentration of NaCl in the new solution.

Solution :

Molarity M is given by :

\(M=\dfrac{\text{Total number of moles}}{\text{Volume in liters}}\)

Now , 1000 ml of NaCl contains 2.5 moles of NaCl .

So , 15 ml of NaCl contains :

\(n=\dfrac{15\times 2.5}{1000}\\\\n=3.75\times 10^{-2}\ moles\)

New , volume V = 15 + 985 = 1000 ml = 1 L .

So , putting value of n and V in above equation :

\(M=\dfrac{3.75\times 10^{-2}}{1}\ M\\\\M=0.0375\ M\)

Therefore ,  the molar concentration of NaCl in the new solution is 0.0375 M .

Hence , this is the required solution .

I found this. hope it helps!

Answer:299,800,000

Explain: The speed of light is 3.00x108m/s and in mph is 6.708 x 108.

Carbon dioxide is produced when 5 mL of methane gas interacts.

Methane, a hydrocarbon, is the primary component of natural gas. Methane has an effect on the climate and temperature of the earth because it is a greenhouse gas (GHG). Methane is released into the atmosphere through a variety of natural and anthropogenic (caused by humans) sources.

Methane is non-toxic and safe to breathe in small amounts, but if it is allowed to replace air in large quantities, the absence of oxygen could result in suffocation.

\(CH_{4}(g) + 2O_{2} \rightarrow CO_{2} + 2H_{2}O(g)\)

1 volume of \(CH_{4}\) = 1 volume of \(CO_{2}\)

5 ml of \(CH_{4}\) = 1 × 5 mL CO2

                    = 5 mL CO2

So, volume of methane = 5mL

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Answer:

20.48litre

Explanation:

no of moles=molarity ×volume of solution in litre

Answer:

A D F

Explanation:

look at attachment if you don't believe me

Answer:

Beryllium Fluoride (BeF2) is an ionic compound

When chlorine gas is added to water, the pH goes down due to two acids that form. The correct answer is option c.

The reaction of chlorine gas with water results in the formation of hydrochloric acid (HCl) and hypochlorous acid (HOCl). Both of these acids lower the pH of the water, making it more acidic.

Chlorine gas (Cl2) reacts with water (H2O) in the following manner:

Cl2 + H2O → HCl + HOCl

Hydrochloric acid is a strong acid that dissociates completely in water, while hypochlorous acid is a weak acid that partially dissociates. The presence of these acids in the water increases the concentration of hydrogen ions (H+), which leads to a lower pH value. This is a crucial step in water treatment processes, as the disinfection properties of chlorine are more effective in a lower pH environment.

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