Diazomethane is a toxic yellow gas that is both sensitive and explosive: However, it is a useful reagent in the laboratory to make key intermediates by reacting with carboxylic acids in a quick and clean reaction_ Draw the expected organic product of diazomethane with the following carboxylic acid. COOH Hc N=N; CH3

When there is the two of the same element on the product side, you can balance chemical reactions by placing the coefficient in front of the element.

It should be noted that coefficients are whole numbers and should be chosen in such a way that they give the smallest possible whole numbers in the ratio of atoms.

Before that, let us revise how to balance chemical equations and then we will learn how to balance equations when there are two of the same element on the product side.

Balancing chemical equations:When we write an equation for a chemical reaction, the number of atoms on both sides of the equation should be equal. Balancing the equation is the process of making the number of atoms equal. 

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Answer

3.65 liters is the volume of H₂ produced in the reaction

Explanation:

2 Al(s) + 6 HCI (aq) → 2AICI₃ (aq) + 3 H₂ (g)

I'll convert the mass of Al to moles.

2.93 g . 1mol/26.98 g = 0.108 moles

Ratio is 2:3. 2 moles of Al can produce 3 moles of H₂

Then, 0.108 moles of Al would produce (0.108 .3)/ 2  = 0.163 moles of H₂ Let's apply the Ideal Gases Law to find out the produced volume, at STP.

STP is 1 atm as pressure and 273K as T°

1 atm . V = 0.163 mol . 0.082L.atm/mol.K . 273K

V = (0.163 mol . 0.082L.atm/mol.K . 273K) / 1atm

V = 3.65 L

Answer: C. oil

Explanation:

If the heat capacity of the bomb calorimeter is 9.96 kj/°c, then the amount of heat released from combustion of 2 g of wood is 39.84 kJ.

To determine the amount of heat released from combustion of 2 g of wood, you need to use the formula

Q = C × ΔT Where:Q is the heat released or absorbed in joules (J)C is the heat capacity of the bomb calorimeter (given as 9.96 kJ/°C)ΔT is the change in temperature in degrees Celsius (°C)We can assume that all the heat released from the combustion of the wood is absorbed by the calorimeter, so we can use the heat capacity of the calorimeter to calculate the heat released. Since the calorimeter absorbs the heat, the value of Q will be negative (i.e. the heat is released).

Given: Mass of wood = 2 g Heat capacity of the bomb calorimeter = 9.96 kJ/°C First, we need to calculate the change in temperature. This can be done by measuring the temperature of the calorimeter before and after combustion. Let's assume that the temperature increases by 4.0 °C.ΔT = 4.0 °C Now, we can calculate the heat released: Q = C × ΔTQ = (9.96 kJ/°C) × (4.0 °C)Q = 39.84 kJ

Therefore, the amount of heat released from combustion of 2 g of wood is 39.84 kJ.

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Answer:

all i think

Explanation:

Explanation:

The nomenclature of ionic compounds is given by:

1. Positive is written first.  And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

1.)  : Calcium chloride  (Correct)

In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.

2.)  : Copper (II) oxide   (Incorrect)

In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.

3.)  : Lead (II) sulfide   (Incorrect)

In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.

The decay rate of a sample of Beryllium 14 with a decay constant of 0.143 would be 1.28x10¹7Bq. Here is a long answer to your question:A half-life is the period of time it takes for half of a radioactive substance's nuclei to decay.

The decay rate (activity) of a radioactive substance is the number of nuclei that decay per unit of time.The decay constant λ of a substance determines the amount of activity it emits, and it is a fundamental characteristic of that substance.The formula that relates decay constant and decay rate is:N = N0e^(-λt), where N is the current number of nuclei,N0 is the initial number of nuclei,t is the time elapsed, ande is the base of the natural logarithm.When t=1/λ, the above formula yields:N = N0e^(-1) = N0/2 This implies that after one half-life, the amount of radioactive substance remaining is one-half of the initial amount.

The decay rate is constant and proportional to the amount of substance remaining.Since the decay rate is constant and proportional to the number of atoms in the sample, we can use this information to calculate the decay rate. The number of radioactive nuclei remaining in a sample is given by:N = N0e^(-λt) Let's assume that N = 1.38x10¹6 atoms, λ = 0.143. To calculate the decay rate R, we simply multiply the number of atoms remaining by the decay constant:R = λN= 0.143 x 1.38x10¹6 = 1.97x10⁵ Bq Therefore, the decay rate of a sample of Beryllium 14 with a decay constant of 0.143 would be 1.28x10¹7Bq.

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One of the internal control activities that would most likely justify reducing the assessment of the risks of material misstatement for long-term notes payable is the use of long-term debt covenants.Explanation:Internal controls are policies and procedures put in place to ensure that a company's financial statements are accurate and reliable. This aims to reduce the risks of material misstatement. Long-term notes payable are a type of long-term debt that needs to be monitored.The use of long-term debt covenants is an internal control activity that can help reduce the assessment of the risks of material misstatement for long-term notes payable. Long-term debt covenants are conditions or restrictions that lenders put in place to ensure that borrowers abide by the terms of the loan agreement. It usually includes financial ratios, interest rate restrictions, etc. The use of these covenants helps ensure that borrowers meet their financial obligations, which reduces the risk of default. As such, auditors can rely on the use of long-term debt covenants as an internal control activity to justify reducing the assessment of the risks of material misstatement for long-term notes payable.

Internal control activities is a process carried out on the mandate of the board of directors or management in an organization that aims to protect company assets, and ensure compliance with applicable laws and regulations. Control Activities According to James A. Hall (2011: 190) activities Control activities are the various policies and procedures used to ensure that appropriate actions have been taken to address identified company risks.

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The maximum number of electrons that can populate a given orbital is two assuming that the pauli exclusion principle remains valid.

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The equation can be balanced as N2+3H2→2NH3. The coefficients of Hydrogen (1) is 3 and NH3 is 2.

In the equation, N2+3H2→2NH3, the reactants are Nitrogen and Hydrogen which combine to form the product Ammonia. In this balanced equation,  hydrogens has a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen. There are various ways to detect the presence of the product which is ammonia gas. Ammonia gas detectors are also present at various areas to detect the ammonia gas. Ammonia gas can also be detected by nose if the concentration is more than 5 ppm.

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The standard reaction enthalpy for the given reaction is +235.8 kJ/mol.

The standard reaction enthalpy (ΔH°) for the given reaction is determined as follows:

Equation of reaction: 3 Fe₂O₃ (s) → 2 Fe₃O₄ (s) + ½ O₂ (g)

The standard enthalpy of formation values for Fe₂O₃ (s), Fe₃O₄(s), and O₂(g) is used to calculate the standard reaction enthalpy.

ΔH° = [2 × ΔH°f(Fe₂O₃)] + [½ × ΔH°f(O₂)] - [3 × ΔH°f(Fe₃O₄)]

where;

ΔH°f(Fe₂O₃) = -824.2 kJ/mol

ΔH°f(Fe₃O₄) = -1118.4 kJ/mol

ΔH°f(O₂) = 0 kJ/mol

ΔH° = [2 × (-1118.4 kJ/mol)] + [½ × 0 kJ/mol] - [3 × (-824.2 kJ/mol)]

ΔH° = -2236.8 kJ/mol + 0 kJ/mol + 2472.6 kJ/mol

ΔH° = 235.8 kJ/mol

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Answer:

Woah thats a lot of calculating but the answer is 210.

Explanation:

Im really sorry if im wrong but im not very good with math cause I was just trying to help.

When an ionic compound dissolves in water, the compound breaks apart into its individual cations and anions. This dissolution occurs due to the attraction between the ions and the partially charged water molecules.

When an ionic compound dissolves in water, it undergoes a process called dissolution. This process involves the separation of the ionic compound into its individual ions, specifically cations and anions. Ionic compounds consist of positively charged ions (cations) and negatively charged ions (anions), held together by strong electrostatic forces of attraction.

When the ionic compound is placed in water, the water molecules surround and interact with the ions. The oxygen atom of the water molecule has a partial negative charge, while the hydrogen atoms have a partial positive charge. These charges allow water molecules to interact with the ions.

The partially negative oxygen atom of the water molecule is attracted to the positively charged cations, while the partially positive hydrogen atoms are attracted to the negatively charged anions. This attraction causes the ionic compound to dissociate, or separate, into its individual ions.

The water molecules effectively surround each ion, forming a hydration shell. This hydration shell stabilizes the ions by shielding their charges from each other, preventing them from coming back together. The hydration of ions also helps to solvate the ions, allowing them to move freely within the water.

The process of dissolution is an essential step in many chemical reactions that occur in aqueous solutions. It allows the ions to disperse evenly throughout the solution, which increases the chances of successful chemical interactions.

In summary,  The resulting hydrated ions are then free to move and participate in various chemical reactions in the solution.

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Answer:

3−

Thus, a nitrogen atom will form an anion with three more electrons than protons and a charge of 3−.

Explanation:

All of the methods (1) to (4) could potentially be used to separate peptides produced by chymotrypsin treatment,

Depending on the specific properties of the peptides and the separation conditions.

(1) Chromatography on a cationic column, at pH=7, could be used to separate peptides based on their charge properties.

(2) Chromatography on an anionic column, at pH=4, could also be used to separate peptides based on their charge properties, but in this case, the pH is lower, and the column is negatively charged, so peptides with a net positive charge would bind less strongly and elute earlier, while peptides with a net negative charge would bind more strongly and elute later.

(3) Size exclusion chromatography could be used to separate peptides based on their size. Peptides that are larger would elute earlier, while smaller peptides would elute later, as they pass through the porous stationary phase.

(4) Electrophoresis could be used to separate peptides based on their charge properties and size. Peptides with a net positive charge would migrate towards the negative electrode, while peptides with a net negative charge would migrate towards the positive electrode.

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Answer:

what

Explanation:

The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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The complete sentences are:

Page 3:

The effect of energy in phase transitions of matter is that it is required to break the intermolecular forces that hold the particles of a substance together. When energy is added to a substance, the particles move faster and the intermolecular forces are broken. This can cause the substance to change phase.

The interactive demonstration on the sample of water shows that energy is required to melt ice and boil water. When the ice is heated, the particles start to move faster and the ice melts. The temperature of the water stays constant at 0°C until all of the ice has melted. This is because the energy is being used to break the intermolecular forces in the ice. Once all of the ice has melted, the temperature of the water starts to rise again. When the water is boiled, the particles move so fast that they escape from the liquid state and become a gas. The temperature of the water stays constant at 100°C until all of the water has boiled. This is because the energy is being used to break the intermolecular forces in the water. Once all of the water has boiled, the temperature of the steam starts to rise again.

The complete sentences:

Page 4:

Heating curves show the temperature of a substance as it is heated. The curve has a horizontal line at the melting and boiling points, which indicates that the temperature does not change during these phase changes.

Cooling curves show the temperature of a substance as it is cooled. The curve has a horizontal line at the melting and boiling points, which indicates that the temperature does not change during these phase changes.

Both curves show that the temperature of a substance increases as it is heated and decreases as it is cooled.

A heating curve is more choppy than a cooling curve because there are more phase changes during heating than during cooling.

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Answer:

I think it is 20

Explanation:

Answer: 20, Hope this helped!

Explanation:

The ionic bond is the type of chemical bond that joins sodium and chlorine.

When sodium and chlorine react, electrons are transferred from the sodium atom to the chlorine atom, resulting in the formation of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-). These ions are then attracted to each other due to their opposite charges, forming an ionic bond. This bond is relatively strong and requires a significant amount of energy to break. Ionic compounds such as sodium chloride (NaCl) have high melting and boiling points, and are typically crystalline solids at room temperature.

In an ionic bond, electrons are transferred from one atom to another. This results in the formation of positively charged cations and negatively charged anions, which are then attracted to each other by electrostatic forces, forming an ionic compound. In the case of sodium and chlorine, sodium has one valence electron in its outermost shell, while chlorine has seven electrons in its outermost shell. Sodium easily loses its outer electron to achieve a stable octet configuration, while chlorine readily accepts an additional electron to achieve a stable octet. This results in the formation of Na+ and Cl- ions, respectively, which are then attracted to each other due to their opposite charges.

Ionic compounds have a regular, repeating arrangement of ions called a crystal lattice. They typically have high melting and boiling points, as the strong electrostatic attractions between the ions require a lot of energy to overcome. Ionic compounds are generally soluble in polar solvents such as water, but not in nonpolar solvents. They also conduct electricity when dissolved in water or when melted, as the charged ions are free to move and carry electrical charge.

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Answer:

Students will know that scientists find answers to questions about the natural world in different ways. ... Students will be able to explain that some science investigations are not experiments because they DON'T involve testing a hypothesis by changing one variable while keeping the other factors constant.

Explanation:

It  really all depends on the levels of suspicion.

Answer:

This combination product contains 2 medications, acetaminophen and an antihistamine. Acetaminophen helps to reduce fever and/or mild to moderate pain (such as headache, backache, aches/pains due to muscle strain, cold, or flu).

Explanation:

it will help you. may be

Answer:

looooser

mark me brailist

Answer:

50mL of the 0.1M acid are needed to neutralize the solution

Explanation:

To solve this question we have to calculate the moles of OH- present in the basic solution. Based on the reaction:

2OH- + H2CO3 → 2H2O + CO3²⁻

we can find the moles of carbonic acid (And its volume) required for the complete neutralization as follows:

Moles OH-:

pH = -log [H+]

10^-pH = [H+]

[H+] = 1x10⁻⁸M

As:

[OH-] = Kw / [H+]

[OH-] = 1x10⁻¹⁴ / 1x10⁻⁸

[OH⁻] = 1x10⁻⁶M

The moles in 10000L are:

10000L * (1x10⁻⁶moles OH- / L) = 0.01 moles OH-

Moles H₂CO₃ required:

0.01 moles OH- * (1mol H₂CO₃ / 2mol OH⁻) = 0.005 moles H₂CO₃

Volume:

0.005 moles H₂CO₃ * (1L / 0.1moles) = 0.05L =

4.8 g of carbon dioxide is formed and No calcium carbonate is left when the reaction is completed statements are correct.

CaCO3 has a molar mass of 40+12+316.

CaCO3 has a molar mass of 100 g/mol.

CaCl2 has a molar mass of 40 + 235.5.

CaCl2 has a molar mass of 111 g/mol.

100 g of CaCO3 and 111 g of CaCl2 are produced per mole.

Assume that x g of CaCl2 is created for every 10 g of CaCO3.

Therefore,

CO2 has a molar mass of 12 + 162.

CO2 has a molar mass of 44 g.

100 g of CaCO3 yield 44 g of CO2 per mole, or one mole.

Assume 10 g of CaCO3 results in y g of CO2.

Therefore,

y = 4.8 g 4.8 g of CO2 are created, meaning that one statement is false and three are true.

So we can say that the option D is correct . When the reaction is finished, the assertions that read "4.8 g of carbon dioxide is produced" and "No calcium carbonate is left" are true.

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The atomic radius decreases as you move across a period (from left to right) because the number of protons increases and pulls the electrons in closer to the nucleus.

Atomic radius is the distance from the nucleus of an atom to the outermost electrons. The atomic radius decreases as you move from left to right in a period. This decrease is due to the increase in the nuclear charge and the shielding effect. Electrons are attracted to the positive charge of the nucleus but are also repelled by the other electrons in the atom. The shielding effect occurs when the inner electrons shield the outer electrons from the nuclear charge.This results in a smaller atomic radius.

As the number of protons increases, the nucleus becomes more positively charged, which attracts the electrons more strongly. The electrons are pulled in closer to the nucleus, making the atomic radius smaller. Therefore, option b, The number of protons increases and pulls the electrons in closer to the nucleus is correct.

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The reaction between NiCl2 and Fe is a single replacement reaction. A single replacement reaction involves an element reacting with a compound to produce a new element and a new compound. This reaction follows the general equation; A + BC → AC + B.

The activity series of metals will be used to predict the products of a single-replacement reaction when NiCl2 reacts with Fe. Here are the steps involved in predicting the products of a single-replacement reaction; Steps to predicting the product of a single-replacement reaction: Identify the metal that is being displaced. Metals on the left of the activity series of metals are known to displace metals on the right of the series. This is because metals on the left are more active than those on the right.Look for the element that is being displaced. Fe is being displaced since Ni is higher than Fe in the activity series of metals. As a result, Fe will be replaced by Ni. Identify the product. The Ni metal and Fe2+ will be produced by the reaction.

NiCl2(aq) + Fe(s) → Ni(s) + FeCl2(aq)

The balanced chemical equation will be

NiCl2 + Fe → FeCl2 + Ni

The reaction between NiCl2 and Fe is a single replacement reaction. A single replacement reaction involves an element reacting with a compound to produce a new element and a new compound. This reaction follows the general equation; A + BC → AC + B.

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The specific rotation of a compound is a measure of how much it rotates the plane of polarized light. It is calculated using the observed rotation, the concentration of the compound, and the path length of the sample.

In this case, we are given that a solution contains 1.2 g of a compound in 10 ml of water, and the observed rotation is 1.3 degrees. The pathlength is given as 10 cm.

To calculate the specific rotation, we need to determine the concentration of the compound in the solution. We can do this by converting the mass of the compound (1.2 g) to moles and then dividing by the volume of the solution (10 ml).

First, we need to determine the molar mass of the compound. Let's assume it is X g/mol.

Number of moles of compound = mass of compound / molar mass
Number of moles of compound = 1.2 g / X g/mol

Next, we convert the volume of the solution from milliliters to liters.

Volume of solution = 10 ml = 0.01 L

Now, we can calculate the concentration of the compound in the solution.

Concentration = Number of moles of compound / Volume of solution
Concentration = (1.2 g / X g/mol) / 0.01 L

Finally, we can calculate the specific rotation using the formula:

Specific rotation = Observed rotation / (Concentration * Pathlength)
Specific rotation = 1.3 degrees / ([(1.2 g / X g/mol) / 0.01 L] * 10 cm)

Simplifying the expression, we get:

Specific rotation = (1.3 degrees * 0.01 L) / (1.2 g / X g/mol * 10 cm)

Specific rotation = (0.013 L) / (0.12 g / X g/mol * 10 cm)

Specific rotation = (0.013 L * X g/mol * 10 cm) / (0.12 g)

Specific rotation = (0.13 L·cm·g/mol * X) / (0.12 g)

Therefore, the specific rotation of the compound can be calculated using the given information and the formula:

Specific rotation = (0.13 L·cm·g/mol * X) / (0.12 g)

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Answer:

the periodic table

Explanation:

Elements with similar properties are in columns called groups. Elements to the left of this line are metals. Elements in the same group of the periodic table have the same number of electrons in their outer shell. This gives them similar chemical properties.

Hope this helps!