How long does it take a 720 Watt electric drill to transform
45,000 J of energy?
Please answer with proper notation thank you.

The amount of aluminum that reacted is approximately 0.069 grams.

To determine the mass of aluminum that reacted, we need to use the ideal gas law and consider the partial pressure of hydrogen gas. First, we calculate the pressure of hydrogen gas by subtracting the partial pressure of water vapor from the total pressure. The pressure of hydrogen gas is 751 mmHg - 26.8 mmHg = 724.2 mmHg.

Next, we convert the pressure of hydrogen gas from mmHg to atm by dividing by 760 mmHg/atm, giving us 0.953 atm.

Using the ideal gas law equation PV = nRT, we can calculate the number of moles of hydrogen gas. The volume of hydrogen gas is given as 37.3 mL, which we convert to liters by dividing by 1000 mL/L, giving us 0.0373 L. The temperature is given as 27°C, which we convert to Kelvin by adding 273.15, giving us 300.15 K. The ideal gas constant R is 0.0821 L∙atm/(mol∙K).

Plugging the values into the ideal gas law equation, we can solve for the number of moles of hydrogen gas: (0.953 atm) * (0.0373 L) = n * (0.0821 L∙atm/(mol∙K)) * (300.15 K).

Simplifying the equation, we find that the number of moles of hydrogen gas is approximately 0.00139 moles.

Since the balanced chemical equation between aluminum and hydrochloric acid is 2Al + 6HCl → 2AlCl₃ + 3H₂, we can conclude that 2 moles of aluminum react to produce 3 moles of hydrogen gas.

Using this ratio, we can calculate the number of moles of aluminum that reacted: (0.00139 mol H₂) * (2 mol Al / 3 mol H₂) = 0.000926 moles Al.

Finally, we can convert moles of aluminum to grams using the molar mass of aluminum (26.98 g/mol): (0.000926 mol Al) * (26.98 g/mol) ≈ 0.069 g Al.

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The number of valence electrons for neutral atoms is the same as the number of the atom's main group. A periodic table element's column can be used to determine its main group number. For instance, carbon, which belongs to group 4, has four valence electrons.

For an atom to become a charged ion and create an ionic connection with another atom, it must have between one and three valence electrons, which it will lose.

Atoms can be very reactive or extremely inactive depending on how many valence electrons they have. The quantity of valence electrons in an atom also affects whether or not it is more likely to lose or acquire electrons during chemical processes. Metals may carry electricity because they readily give away electrons.

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The 206 kJ of energy is absorbed for each mole of CH4(g) that reacts. This means that the reaction is endothermic.

Therefore, the balanced thermochemical equation is as follows.

\(CH4(g) + H2O(g) → H2(g) + CO(g)ΔH\)

= \(+ 206 kJ\) (Energy is absorbed)2)

\(CH4(g) + O2(g) → CO2(g) + H2O(g)\)

And,

802 kJ of energy is evolved for each mole of CH4(g) that reacts. This means that the reaction is exothermic.

Therefore, the balanced thermochemical equation is as follows.

\(CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)ΔH\)

= - 802 kJ (Energy is evolved)3)  Given reaction is;

\(H2(g) + O2(g) → H2O(g)\)

And, 242 kJ of energy is evolved for each mole of H2(g) that reacts. This means that the reaction is exothermic. Therefore, the balanced thermochemical equation is as follows.

\(H2(g) + 1/2 O2(g) → H2O(g)ΔH\)

= \(- 242 kJ\)(Energy is evolved)

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Answer:

Initial Volume ( V₁ 0.43L

Initial Concentration (M₁) 13M

Final Concentration ( M₂) 3.0M

Final Volume ( V₂) = ?

we have to determine the final volume of diluted solution .

Using Dilution Equation

\( \bull\bf \: M_{1}V_{1} = M_{2}V_{2} \)

Put the given value

\(\sf \longrightarrow \: (13 \times 0.43) = (3 \times \: V_{2} ) \\ \\ \\ \sf \longrightarrow \:(5.59) = 3V_{2} \: \\ \\ \\ \sf \longrightarrow \: \:V_{2} \: = \dfrac{5.59}{3} \\ \\ \\ \sf \longrightarrow \: \: V_{2}\: = 1.86 \: litre\)

Therefore,

Answer: A chlorine atom has an atomic number of 17 and a mass number of 38. This chlorine atom has 18 neutrons

Hope this helps :)

The statement "molecules move in random directions when heated in a heat engine, and because of the lack of uniformity in the direction of molecular movement" is true.

When a heat engine is heated, molecules absorb heat energy and their kinetic energy increases. The kinetic energy of molecules causes them to move around. However, this movement is not uniform, and the molecules move in random directions.

A heat engine is a device that converts thermal energy into mechanical energy. Heat engines operate on the principle of thermodynamics.

They work by taking in thermal energy from a high-temperature reservoir, converting some of it into mechanical energy, and then releasing the remaining thermal energy to a low-temperature reservoir.The internal combustion engine in a car, the steam engine in an old locomotive, and the turbine in a power plant are all examples of heat engines. They all convert heat energy into mechanical energy to perform work.

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use a strong base to neutralize, like NaOH, KOH, etc

Option C. is a molecule of hydrocarbon.

Hydrocarbons are organic compounds made up of only hydrogen and carbon atoms. They are the building blocks of organic chemistry and are the main component of fossil fuels such as coal, oil, and natural gas.

Molecules of hydrocarbons can be simple or complex, and can exist as gases, liquids, or solids. Some common examples of hydrocarbon molecules include methane (CH₄), ethane (C₂H₆), propane (C₃H₈), and butane (C₄H₁₀). Alkanes, alkenes, and alkynes are all types of hydrocarbons that have different chemical and physical properties based on the arrangement of their atoms.

Therefore, the correct answer is as given above. It could then be concluded that only option C is made up of hydrogen and carbon atoms.

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In sucrose, the anomeric carbon atoms are located in the glucose and fructose units.

The carbon atom that forms the glycosidic bond between the two monosaccharides is the anomeric carbon of the glucose unit, while the anomeric carbon of the fructose unit remains free. Thus, only the glucose anomeric carbon is selected and appears green.
Sucrose is a non-reducing sugar because it does not react with Benedict's reagent or Tollens' reagent. This is because the anomeric carbon of glucose is involved in the glycosidic bond, and therefore cannot open up to form a free aldehyde or ketone group, which is required for a sugar to be considered a reducing sugar. Non-reducing sugars like sucrose are important in biological systems because they are less susceptible to spontaneous degradation, making them better suited for long-term energy storage.
(a) The anomeric carbon atom is the one that forms the glycosidic bond in a carbohydrate molecule. In the case of sucrose, which is a disaccharide made up of glucose and fructose, there are two anomeric carbon atoms. In glucose, the anomeric carbon is C1, and in fructose, the anomeric carbon is C2. These two carbon atoms form the glycosidic bond in sucrose, which links the glucose and fructose molecules together.
(b) Sucrose is a non-reducing sugar. Reducing sugars have a free aldehyde or ketone group, allowing them to reduce other compounds or be oxidized themselves. In sucrose, both anomeric carbons are involved in the glycosidic bond, so there are no free aldehyde or ketone groups. This means sucrose cannot reduce other compounds or be oxidized, classifying it as a non-reducing sugar.

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In the presence of 55.0 moles of oxygen, 73.3 moles of iron can be used to produce iron (III) oxide.

Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, iron reacts with oxygen gas to produce iron(III) oxide as follows:

4Fe + 3O₂ → 2Fe₂O₃

Based on the above equation, 4 moles of iron reacts with 3 moles of oxygen.

This means that if 55 moles of oxygen reacts, 55 × ⁴/3 = 73.3 moles of iron will also react.

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Answer:

B

Explanation:

Blue triangles are a cold front and red bowls are warm front

Stationary front is a combination

HOPE I helped :]

Answer:

stationary front

Explanation:

on a weather map, a stationary front is shown as alternating red semicircles and blue triangles like in the image at the left. notice how the blue triangles point in one direction, and the red semicircles point in the opposite direction.

The silver coating on the spoon is produced. When electrolyzing a spoon made from iron with silver, the anode, cathode, and electrolyte that can be used are as follows:

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The reaction equation is the chemical formula of reagents and product substances  

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products  

Mol ratio :

Pbs : O₂ : PbO : SO₂ = 2 : 3 : 2 : 2

mol PbO

\(\tt \dfrac{2}{2}\times 2.4=2.4\)

mol SO₂

\(\tt \dfrac{2}{2}\times 2.4=2.4\)

mol PbO

\(\tt \dfrac{2}{3}\times 2.4=1.6\)

mol SO₂

\(\tt \dfrac{2}{3}\times 2.4=1.6\)

(c) 5.3 mol PbS

mol PbO

\(\tt \dfrac{2}{2}\times 5.3=5.3\)

mol SO₂

\(\tt \dfrac{2}{2}\times 5.3=5.3\)

mol PbO

\(\tt \dfrac{2}{3}\times 5.3=3.53\)

mol SO₂

\(\tt \dfrac{2}{3}\times 5.3=3.53\)

When an electron is superposed, its various states can be viewed as distinct outcomes, each with a specific chance of being observed.

Superposition is the ability of a quantum system to exist in multiple states simultaneously up until a measurement is taken. This fundamental principle of quantum mechanics is frequently illustrated through an experiment conducted in 1801 by the English scientist Thomas Young since the idea is challenging to grasp.

The positioning of one thing above or on top of another The law of superposition, which is extremely straightforward, is used to establish if one sedimentary rock is older than another.

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The reaction of Mg and oxygen (in the air, we have oxygen) is the following:

If we use carbon dioxide (CO2) to react with magnesium oxide (MgO), we can see that this compound would continue to burn. This is because the reactivity series of Mg is above the reactivity of carbon and this compound can take the oxygen from carbon dioxide to react.

The mass of manganese dioxide produced from one mole or 18 g of water is 174 g. Then, MnO₂ produced from 445 gram of H₂O is 4300 g.

Permanganate MnO₄ is an ion from potassium permanganate. It is an oxidizing agent.  MnO₄  easily reduces to MnO₂. As per the given reaction, 18 g is required by one mole or 174 g of MnO₂.

Molar mass of MnO₂ = 87 g/mol

molar mass of water = 18 g/mol

mass of 2 moles of MnO₂ = 174 g

Thus, 18 g of water gives 174 g of MnO₂.

Mass of MnO₂ produced from 445 g of  water = (445 × 174)/18 = 4300 g

Therefore, the mass of MnO₂ produced is 4300 g.

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Answer:

A

Explanation:

looking at both equity

and mortgage bond fixtures

I would rather say secured bond fit into not being backed by any specific collateral

The temperature from the metal is transferred to water. Hence the heat lost by the metal is equal to the heat gained by water. Then using calorimetric equation, mass of gold is , 353.8 g.

Calorimetry is an analytical technique used to determine the heat energy absorbed or evolved by a system. The calorimetric equation relating the heat energy q with the mass m, specific heat c and the temperature difference ΔT is :

q = m c ΔT

Here, the heat energy absorbed by water in the calorimeter is equal to the heat evolved from the hot gold metal.

given c of gold = 0.130 J/°C g

c of water = 4.12 J/°C g

temperature difference for water = 45- 20 °C = 25°C

thus, 25°C is lost from the metal.

Then, Mg × 0.130 J/°C g × (150 -25°C ) = 50 g × 4.12 J/°C g × 25°C

then Mg = 353.8 g.

Therefore, mass of gold is 353.8 g.

In similar way, we can find the final temperature of the second system if all other quantities are given.

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Answer:

Below is the clarification of that same particular question.

Explanation:

For that kind of weak diprotic predictor, the standard economic statement can indeed be published as:

    ⇒  \(H_2In_(aq)\rightleftharpoons In^{2-} +2H^+\)

Answer:

seismographs

Explanation:

Scientists use seismographs that record the length and strength of each earthquake to try to determine if an eruption is imminent. Magma and gas can push the volcano's slope upward.

The mass of NaOH in grams present in 300ml of a 0.1 molar solution will be 1.2 grams.

We can use  formula of number of moles

m=n/v

(n=no of  moles)

n=w/m

w = weight of the  NaOH and

m=molar mass of the NaOH i.e 40

1 molar solution contains molecular weight (m) expressed as gm, made up to 1 litre of solution. Therefore 0.275 molar contains,

0.1 x m x 300/1000grams of NaOH

Molarity is  distinguished from the  Molality (M), latter containing the number of gm moles in 1 kg of  solvent, such as the  water.

No of the moles (n) = Molarity ×V mL/1000​

Given:

M=0.1M

V mL =300mL

Therefore, n= 0.1×300/1000

​ = 30/1000

= 0.03 mol

Molar mass of the NaOH = 40g

Mass of the NaOH = 0.03 ×40= 1.2 g

The mass of NaOH will be 1.2 grams and can be calculated by the molarity formula.

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The most concentrated solution is C) 6 moles of solute dissolved in 4 liters of solution, as it has the highest mole fraction of solute per unit volume of solution.

What is concentrated solution?

A concentrated solution is a solution that contains a relatively large amount of solute dissolved in a given amount of solvent or solution. The concentration of a solution is typically measured in moles per liter (M) or grams per liter (g/L).

A concentrated solution has a higher concentration of solute compared to a dilute solution, which has a lower concentration of solute. The term "concentrated" is relative and depends on the specific context and the particular substance being dissolved.

What is dilute solution?

A dilute solution is a solution that contains a small amount of solute dissolved in a larger amount of solvent. It has a relatively low concentration of solute particles. Dilute solutions are often created by adding more solvent to a concentrated or stock solution. The term "dilute" is the opposite of "concentrated", and it describes the amount of solute present in a solution in comparison to the amount of solvent.

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Answer:

It is unsaturated

Explanation:

A solution is said to be unsaturated when it contains less solute than it can normally hold at a given temperature.

The solubility of NaCl remains fairly independent of temperature hence the line for the solubility of NaCl remains fairly flat in the solubility curve.

The solubility of NaCl is about 36 g of NaCl in 100g of water. Hence a solution that contains 35.00 g of sodium chloride in 100 g of water at 45.0C is unsaturated.

A total of 96,320 kJ / 17 kJ per gram of protein = 5,670 grams of protein.

To determine the grams of protein needed to produce 23,000 calories of energy, we need to convert the calories to kilojoules (kJ) and then divide by the energy produced by each gram of protein.

23,000 calories = 96,320 kJ (1 calorie = 4.184 kJ)
Each gram of protein produces 17 kJ of energy.


Protein is an important nutrient for our bodies, as it provides the building blocks for our muscles, bones, and other tissues. It also plays a role in many cellular functions and processes. One of the functions of protein is to provide energy for our bodies, although this is not its primary role.

When we eat protein, our bodies break it down into amino acids, which can then be used for various purposes. One of these purposes is to produce energy.

Every gram of protein contains 4 calories, or 17 kilojoules, of energy. This is less than the amount of energy provided by a gram of fat (9 calories or 37 kilojoules) or a gram of carbohydrate (4 calories or 17 kilojoules), but it is still significant.

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When ethanol is added to strawberry extract in the final step, it acts as a solvent and helps to separate the different components of the extract. Adding ethanol to strawberry extract in the final step helps to separate the different components of the mixture and isolate the desired compounds.

Ethanol is a polar solvent, which means that it has a slightly positive charge on one end and a slightly negative charge on the other. This polarity allows it to attract and dissolve other polar molecules, such as sugars and organic acids, which are present in the strawberry extract.

By adding ethanol to the strawberry extract, these polar molecules are extracted from the mixture and dissolve into the ethanol. This process is known as extraction, and it is commonly used in chemistry and biology to isolate specific compounds from complex mixtures.

Once the ethanol has extracted the polar molecules from the strawberry extract, it can be separated from the mixture through a process called filtration or centrifugation. This leaves behind a concentrated solution of the nonpolar compounds in the strawberry extract, such as the flavor and aroma molecules.

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A strong acid is one that entirely ionizes in aqueous solution. When dissolved in water, it always loses a proton (H+). Acid that only partially ionizes in a solution is considered weak acid.

Only a small number of its (H+) atoms are released when it dissolves in water and it also can be explained by Conductivity .

An electrolyte solution's conductivity is a gauge of how well it conducts electricity. In the SI, conductivity is measured in Siemens per meter.

Conductivity is a helpful indicator of water quality in general. Every body of water has a typical conductivity range that, once determined, can be used as a reference point for comparison with routine conductivity tests.

While electrical conductance is a characteristic of a specific electrical component, electrical conductivity is a quality of the substance itself (such as silver) (like a particular wire). The amount of voltage needed to for a given amount of electric current to flow is known as electrical conductivity.

An acid that partially separates into its ions in water or an aqueous solution is referred to as a weak acid. On the other hand, in water, a strong acid completely dissociates into its ions. While the conjugate acid of a weak base is also a weak acid, the conjugate base of a weak acid is also a weak base.

The ability of acidic and basic solutions to conduct electricity is referred to as strong and weak. Strong electrical conductivity indicates that an acid or base is a strong acid or base. A weak acid or base is one that conducts electricity only slightly.

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Answer:

Explanation:

3× 22+2×32+ 6×16=

66+64+96=236