Please ignore the top portion just the part word problem I need help with

The chemical formula for Magnesium chloride is actually MgCl₂ The subscript 2 in MgCl₂ indicates that

Magnesium chloride is an inorganic salt composed of magnesium and chlorine. It is typically found as a white crystalline solid, and it is highly soluble in water.

Magnesium chloride is a common compound that has many practical uses. For example, it is used as a de-icing agent for roads, as a coagulant in the production of tofu, and as a supplement to provide the body with essential magnesium.

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Network covalent solids are created via covalent bonding (sometimes called simply "covalent solids") Ionic solids are created through ionic bonding. forming metallic solids by metallic bonding.

Molecular solids are created via weak intermolecular bonding (sometimes anomalously called "covalent solids")

The physical and chemical characteristics of matter are caused by intermolecular forces. The forces that draw molecules together are known as intermolecular forces. These forces are crucial because they enable chemists to ascertain a substance's state, melting point, boiling temperature, and other physical characteristics. The melting and boiling points increase with increasing intermolecular tensions. Strong covalent or ionic bonds typically hold solids together, and there are powerful attraction forces between the atoms, ions, and molecules that make up solids.

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The mass of reactant that would produce 800 Joules of heat is equal to 800 J × (1 kJ/1000 J)/(24.7 kJ/g).

In order to determine the mass of reactant that would produce 800 Joules of heat, we would set up a conversion equation as follows:

Note: 1 kJ is equal to 1000 Joules.

Conversion:

1 gram = 24.7 kJ

X gram = 800 Joules

Therefore, the mass of reactant that would produce 800 Joules of heat is given by:

Mass = Heat × (conversion factor/rate of heat)

Mass = 800 J × (1 kJ/1000 J)/(24.7 kJ/g).

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Complete Question:

A certain chemical reaction releases 24.7 kJ/g of heat for each gram of reactant consumed. How can you calculate what mass of reactant will produce 800 Joules of heat?

Answer:

they have the same density

When the reaction of  Grignard reagent reacted with methanol will yield a tertiary alcohol. Therefore, Option C tertiary alcohol is correct.

Contains a carbon-metal link, Grignard reagents are chemicals used in catalysis. They generally result from the anhydrous reaction of magnesium metal with an alkyl or aryl halide. Because of their high reactivity, Grignard reagents frequently act as nucleophiles in organic reactions.

An alkyl group from a Grignard reagent binds to the oxygen atom of methanol (CH3OH) when it interacts with the methanol, breaking the carbon-metal connection. A precursor alkoxide is created as a result. The equivalent alcohol is then produced by protonating the intermediate alkoxide.

The reaction of a Grignard reagent with methanol leads to the formation of a tertiary alcohol.

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Victimology is a bad relationship between victims and offender and it is a psychological effects of a crime.

Example:

Victim: Mary

Offender: Boy

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Important of Victimology

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Answer:

Al₂Cl₆

Explanation:

Step 1: Divide the mass percentage of each element by its atomic mass

Al: 20.24/26.98 = 0.7502

Cl: 79.76/35.45 = 2.250

Step 2: Divide all the numbers by the smallest one

Al: 0.7502/0.7502 ≈ 1

Cl: 2.250/0.7502 ≈ 3

The empirical formula of the compound is AlCl₃. Its molar mass is 133.33 g/mol.

Step 3: Calculate "n"

n = molar mass of the molecular formula / molar mass of the empirical formula

n = (266.68 g/mol)/(133.33g/mol)

n ≈ 2

Step 4: Determine the molecular formula

We use the following expression.

molecular formula = n × empirical formula

molecular formula = 2 × AlCl₃

molecular formula = Al₂Cl₆

HCN, Na2SO4: Combination of compounds.

Mg3N2: Chemical compound.

CO2, H2O: Dissolution or hydration reaction.

Cu, Zn(NO3)2: Single-replacement reaction.

Na, N2: Combination of elements.

Let's analyze each chemical combination to determine the type of reaction involved:

HCN, Na2SO4:

The combination of hydrogen cyanide (HCN) and sodium sulfate (Na2SO4) does not represent a specific chemical reaction. It is simply the combination of two compounds.

Mg3N2:

Mg3N2 represents a chemical compound, magnesium nitride. It does not indicate a specific reaction.

CO2, H2O:

The combination of carbon dioxide (CO2) and water (H2O) represents a chemical reaction known as hydration or dissolution. When carbon dioxide dissolves in water, it forms carbonic acid (H2CO3), which can further dissociate into hydrogen ions (H+) and bicarbonate ions (HCO3-).

Cu, Zn(NO3)2:

The combination of copper (Cu) and zinc nitrate (Zn(NO3)2) represents a single-replacement reaction. Copper displaces zinc from the compound, resulting in the formation of copper nitrate (Cu(NO3)2) and zinc metal (Zn).

Na, N2:

The combination of sodium (Na) and nitrogen gas (N2) does not represent a specific reaction. It is simply the combination of two elements.

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Answer:

To convert joules to calories, you can use the conversion factor:

1 calorie = 4.184 joules

To find out how many calories are in 4,180 joules, divide the given value by the conversion factor:

4,180 joules / 4.184 joules per calorie = 0.9 calories (approximately)

Therefore, there are approximately 0.9 calories in 4,180 joules.

Answer:

Solids have a defined shape and volume.

Liquids have a definite volume but can take the shape of a container.

Gas has no definite volume or shape.

Answer:

See Explanation for more details...

Explanation:

Solid: defined form, minimal potential energy, it is not compressible, defined mass.

Liquid: No defined form, has more potential energy than the solids, it is not compressible, defined mass.

Gas: No defined form, high potential energy, it is compressible, defined mass.

Answer:

125

Explanation:

Answer:

Zero

Explanation:

Hello,

The question require us to calculate the mass of nitrogen present in aluminium carbonate.

This can easily be calculated using Avogadro's number as a constant with some minor calculations but however in this case, we can't because there's no single atom of nitrogen present in aluminium carbonate hence we can't calculate the mass of nitrogen present in it.

Chemical formula of aluminium carbonate = Al₂(CO₃)₃.

From the above chemical formula, we can see that there's no single atom of nitrogen present in the formula hence the mass of nitrogen present in aluminium carbonate that contains 1.23×10²³ carbon atoms is zero.

Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

Answer:

3 is right

Explanation:

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Answer:

(2) Hold the dropper upside down to avoid any leakage.

Answer:

A chemical structure determination includes a chemist's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid.

Explanation:

Answer:

Chemical structure determines the molecular geometry of a compound by portraying the spatial arrangement of atoms and chemical bonds in the molecule. This provides chemists with an important visual representation of a chemical formula. Enantiomers are chiral molecules that are mirror images.

Explanation:

Answer credits: Go   o  g l e

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The correct answer is option (b): 8.33 liters of stock and 16.67 liters of water. . The remaining volume will be filled with water, which is 25.0 L - 8.33 L = 16.67 L.

What is Solution?

A solution is a homogeneous mixture composed of two or more substances, where one substance (the solute) is uniformly dispersed in another substance (the solvent) at the molecular or ionic level. In a solution, the particles of the solute are evenly distributed throughout the solvent, resulting in a clear and uniform mixture.

To make a 25.0 liter solution of 3.50 M concentration, using a stock solution of 10.5 M, we can use the dilution formula:

\(C_{1}\) \(V_{1}\)=\(C_{2}\)\(V_{2\)

\(C_{1}\) = 10.5 M

\(V_{1}\) = volume of stock solution (unknown)

\(C_{2}\) = 3.50 M

\(V_{2\) = 25.0 L

Rearranging the formula to solve for \(V_{1\):

\(V_{1}\) = (\(C_{2}\)\(V_{2\)) / \(C_{1}\)

\(V_{1}\)= (3.50 M)(25.0 L) / 10.5 M

\(V_{1}\)= 8.33 L

So, the pharmacist needs to mix 8.33 liters of the 10.5 M stock solution with water to make a 25.0 liter solution of 3.50 M concentration. The remaining volume will be filled with water, which is 25.0 L - 8.33 L = 16.67 L.

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Answer

B. The osmotic pressure will be greater for the solution than for the pure water.

Explanation

Osmotic pressure is directly proportional to the number of solute particles in a given amount of solvent. The more number of solute particles in a solution, the more would be its osmotic pressure.

Madam CJ Walker invented the world’s first hair-straightening formula and the hot comb.

Madam CJ Walker was an American African woman. She was also a political figure and an entrepreneur. She was a social activist. She died at the age of 51.

Madam CJ Walker invented the first-ever hair straightening products and combs. She also invented beauty products. Besides it, she motivates other women to be an entrepreneur and educated.

Therefore, the heated comb and the first hair-straightening formula in history were created by Madam CJ Walker.

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Answer:

C. 2,3,3,4-tetramethylhexane

Explanation:

Answer:

The most important difference between the two is that butter is derived from dairy and is rich in saturated fats, whereas margarine is made from plant oils. ... If the margarine contains partially hydrogenated oils, it will contain trans fat, even if the label claims that it has 0 g.

Explanation:

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Answer: 20.9 billion years.

Explanation: To estimate the age of the rock, we can use the fact that the half-life of uranium-238 is 4.47 billion years. This means that half of the uranium-238 in the rock would have decayed into lead-206 after 4.47 billion years, and half of what remains would decay in the next 4.47 billion years, and so on.

If 20% of the uranium-238 in the rock has decayed into lead-206, then 80% of the original uranium-238 is still present in the rock. This means that the rock has gone through one half-life of uranium-238 decay, and we can estimate its age by using the graph on page 253.

According to the graph, the ratio of lead-206 to uranium-238 after one half-life is approximately 0.027. This means that the rock contains 0.027 times as much uranium-238 as it did originally, and the remaining 80% of the uranium-238 corresponds to 0.8 times the original amount.

Therefore, we can estimate the original amount of uranium-238 in the rock as follows:

Original amount of uranium-238 = (0.8) / 0.027 = 29.63 times the current amount

Next, we can use the fact that each half-life corresponds to a reduction in the amount of uranium-238 by a factor of 2, to estimate the number of half-lives that have passed since the rock formed:

Number of half-lives = log2(29.63) = 4.88

Finally, we can estimate the age of the rock as follows:

Age of the rock = (4.88) x (4.47 billion years per half-life) = 20.9 billion years

Therefore, we can estimate that the age of the rock is approximately 20.9 billion years.

1) We have that one mole of Platinum is 195,084 g/mol

2) The Avogadro number is 6,022x1023.

Answer:

Lattice energy is the energy required to convert a mole of ionic solid into its constituent ions in the gas phase

Explanation:

Lattice energy is usually calculated by the Born-Haber cycle, from the affinity energies and sublimation ethalphy values. It is used as an estimation of the ionic energy strength between the ions in an ionic compound.

It is defined as the energy needed to broke 1 mol of a given ionic compound into its ions in the gaseous state. For example, the lattice energy for sodium chloride (NaCl) is the energy required to separate 1 mol of solid ionic compound (NaCl(s)) and produce the sodium and chlorine ions in the gas phase: Na⁺(g) and Cl⁻(g).

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Answer:

The answer is Electronegativity increases up and to the right

Explanation:

When you move from left to right it increases ( in the periodic table )

But when you move down the table electronegativity decreases.

So “ Electronegativity increases up and to the right” describes the trends the best.

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Answer:

Explanation:

The formula for gravitational potential energy is the mass*gravity*height. Therefore, the greater the distance from the ground, the higher the gravitational potential energy.

Answer: The amount of gravitational potential energy an object has depends on mass of the object and height of the object above ground. Objects that are at large height above the ground have more potential energy. Similarly, objects that are at small height above the ground have less potential energy.

Airborne pollutants are generated by the vapours released when gasoline evaporated and the materials created when gasoline burns (carbon monoxide, nitrogen dioxide, particulates, and unburned hydrocarbons).

Air must be supplied to gasoline in order to burn. To create an ignitable solution, only a small amount of gasoline is needed. If the gas-to-air combination includes such little only 1.4% gasoline by content, it might be burnt with explosive intensity.

For cleaner burning gasoline, use CBG. In accordance with air quality rules, this moniker refers to particular gasoline formulas that must be supplied in specific regions of Arizona.

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Answer:

The volume of the container is 12L.

Explanation:

The given information from the exercise is:

- Initial volume: 4.0L

- Initial number of moles: 2.0 moles

- Final number of moles: 6.0 moles

To calculate the volume of a container with 6.0 moles, we can use a mathematical rule of three:

So, the container will have a volume of 12L.

Answer:

It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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