how many grams of aluminium chloride could be produced from 34.0 g ol aluminium and 39.0 g of chlorine gas and how much is the excess reagent

Answer :Matter makes up everything visible in the known universe, from porta-potties to supernovas. And because matter is never created or destroyed, it cycles through our world. Atoms that were in a dinosaur millions of years ago—and in a star billions of years before that—may be inside you today.     To form water, however, hydrogen and oxygen atoms must undergo chemical changes. For a chemical change to occur, atoms must either break bonds and/or form bonds. The addition or subtraction of matomic bonds changes the chemical properties of the substances involved. Both hydrogen and oxygen are diatomic—they exist naturally as bonded pairs (H2 and O2, respectively). In the right conditions, and with enough energy, these diatomic bonds will break and the atoms will join to form H2O (water). Chemists write out this chemical reaction as:

2H2 + O2 → 2H2O

This equation says that it takes two molecules of hydrogen and one molecule of oxygen to form two molecules of water. Notice that there are the same number of hydrogen atoms and oxygen atoms on either side of the equation. In chemical changes, just as in physical changes, matter is conserved. The difference in this case is that the substances before and after the change have different physical and chemical properties. Hydrogen and oxygen are gases at standard temperature and pressure, whereas water is a colorless, odorless liquid.  

Ecosystems have many chemical and physical changes happening all at once, and matter is conserved in each and every one—no exceptions. Consider a stream flowing through a canyon—how many chemical and physical changes are happening at any given moment?

First, let’s consider the water. For many canyon streams, the water comes from higher elevations and originates as snow. Of course that’s not where the water began—it’s been cycled all over the world since Earth first had water. But in the context of the canyon stream, it began in the mountains as snow. The snow must undergo a physical change—melting—to join the stream. As the liquid water flows through the canyon, it may evaporate (another physical change) into water vapor. Water gives a very clear example of how matter cycles through our world, frequently changing form but never disappearing.

Light energy allows these bonds to break and reform to produce sugar and oxygen, as shown in the chemical equation for photosynthesis:

6CO2 + 6H2O + light → C6H12O6 (sugar)+ 6O2  

This equation says that six carbon dioxide molecules combine with six water molecules to form one sugar molecule and six molecules of oxygen. If you added up all the carbon, hydrogen, and oxygen atoms on either side of the equation, the sums would be equal; matter is conserved in this chemical change.

When animals in and around the stream eat these plants, their bodies use the stored chemical energy to power their cells and move around. They use the nutrients in their food to grow and repair their bodies—the atoms for new cells must come from somewhere. Any food that enters an animal’s body must either leave its body or become part of it; no atoms are destroyed or created.

Matter is also conserved during physical and chemical changes in the rock cycle. As a stream carves deeper into a canyon, the rocks of the canyon floor don’t disappear. They’re eroded by the stream and carried off in small bits called sediments. These sediments may settle at the bottom of a lake or pond at the end of the stream, building up in layers over time. The weight of each additional layer compacts the layers beneath it, eventually adding so much pressure that new sedimentary rock forms. This is a physical change for the rock, but with the right conditions the rock may chemically change too. In either case, the matter in the rock is conserved.

The bottom line is: Matter cycles through the universe in many different forms. In any physical or chemical change, matter doesn’t appear or disappear. Atoms created in the stars (a very, very long time ago) make up every living and nonliving thing on Earth—even you. It’s impossible to know how far and through what forms your atoms traveled to make you. And it’s impossible to know where they will end up next.  This isn’t the whole story of matter, however, it’s the story of visible matter. Scientists have learned that about 25 percent of the universe’s mass consists of dark matter—matter that cannot be seen but can be detected through its gravitational effects. The exact nature of dark matter has yet to be determined. Another 70 percent of the universe is an even more mysterious component called dark energy, which acts counter to gravity. So “normal” matter makes up, at most, five percent of the universe.

Explanation:

Answer:

metal can hold heat keep it near fire

Answer:

Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock

Explanation:

The concentration of a basic solution is determined by the degree of dissociation of base molecules in solution (option B).

A basic solution is an aqueous solution containing more OH-ions than H+ions.

In other words, a basic solution can be said to be an aqueous solution with a pH greater than 7, which is the neutral range.

The concentration of a basic solution is a function of the OH- ions in the solution. Therefore, the concentration of a basic solution is determined by the degree of dissociation of base molecules in solution.

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The decay of Pb by emitting a β− particle results in the production of Bi. β− decay is a process in which an atomic nucleus emits an electron (β− particle) and transforms into a different nucleus.

In the case of Pb, it undergoes β− decay to become Bi. The equation representing this decay process is:

\(\[^{210}\textrm{Pb} \rightarrow \,^{210}\textrm{Bi} + e^{-}\]\)

In this equation, the superscripts represent the mass numbers of the nuclides, while the subscripts represent their atomic numbers. Pb has a mass number of 210, and during the decay process, it emits a β− particle and transforms into Bi, which also has a mass number of 210. The emitted β− particle carries away excess energy and atomic charge to maintain the balance in the decay process.

Overall, when Pb undergoes β− decay, it transforms into Bi by emitting an electron (β− particle). This process helps stabilize the nucleus and leads to the formation of a new nuclide.

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If an enzyme is operating at its optimum pH and the pH was increased, the rate of the enzyme-catalyzed reaction would likely decrease (option A).

This is because enzymes have an optimal pH range for their activity, and deviations from this range can cause denaturation or reduced efficiency of the enzyme.

Enzymes are sensitive to pH and their activity can be affected by changes in the pH of the environment. Each enzyme has an optimal pH range in which it functions most efficiently, and any deviation from this range can lead to a decrease in its activity. The optimal pH range for enzymes is usually between pH 6 and 8, which is close to the pH range found in most living organisms.

If the pH is too low or too high, the enzyme may become denatured, which means that its three-dimensional structure is altered and it loses its ability to bind to its substrate. This can result in a decrease in enzymatic activity and ultimately lead to a loss of function.

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Gravity is a (n) force between objects and depends on an object's size and their distance apart.

Gravitational force is the attractive that exist between all object with mass an object with mass attracts another object with mass the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects

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a. Dispersion in London b. Dipole-dipole interaction The intermolecular interactions that contribute to the formation of a CO2 solution in C6H6 are as follows: Because CO2 is a non-polar molecule.

this is the sole intermolecular force that exists between CO2 and C6H6. Dipole-dipole interactions: Because CO2 is a polar molecule, it might interact with C6H6 via dipole-dipole interactions if C6H6 was similarly polar. However, because C6H6 is a non-polar molecule, dipole-dipole interactions do not contribute to the formation of a CO2 solution in C6H6 H-bonding: An H-bonding interaction is a sort of dipole-dipole interaction in which a hydrogen atom is connected to a strongly electronegative atom (such as N, O, or F). Because CO2 has no hydrogen atoms, there is no H-bonding between CO2.

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The total mass of sodium chloride is 58.44 g/mol.

The mass of sodium is 22.99 g/mol.

To find the percent sodium in sodium chloride can be found by dividing the amounts.

Therefore, the percent sodium is 39%.

Answer:

See below

Explanation:

Ideal gas law

PV = nRT     looking for n, the number of moles

                      the units of   R   match the other factors in the calculation

3.25 * 2.00 / (.0821 * 380) = .208 m

This statement is True, before amino acids can be used for energy production or converted to other compounds, the amine group must be removed and converted to ammonia (NH3) in a process called deamination.

Deamination is a biochemical process in which an amino group (NH2) is removed from an amino acid or a nitrogen-containing nucleotide base, resulting in the formation of a different molecule. This process occurs in various biological systems and is catalyzed by enzymes called deaminases.

In the case of amino acids, deamination results in the formation of a keto acid and ammonia. This process plays a crucial role in the metabolism of amino acids, particularly in the liver, where excess amino acids are broken down to prevent toxicity. The ammonia produced during deamination is converted into urea and excreted by the kidneys. In nucleotide bases, deamination results in the conversion of cytosine to uracil, which can cause mutations during DNA replication.

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Further explanation

Given

25 moles of Oxygen(02)

Required The number of molecules

Solution Reaction

2NO+02 → 2NO2

From the equation,

mol NO2: = 2/1 x mol O2 = 2/1 x 25moles = 50 moles

The number of molecules :

\( = 50 \times 6.022 \times 10^{23}\)

\( = 3.011 \times 10{²5}\)

False.

The ground state LUMO (Lowest Unoccupied Molecular Orbital) for 1,3-butadiene does not have three vertical nodes. The LUMO is the orbital with the lowest energy level that does not contain any electrons. In the case of 1,3-butadiene, the ground state LUMO is formed by the overlap of the p-orbitals of the carbon atoms in the molecule.

The 1,3-butadiene molecule consists of four carbon atoms arranged in a linear fashion, with each carbon atom contributing one p-orbital. The LUMO is formed by the constructive combination of the four p-orbitals, resulting in a bonding molecular orbital. This orbital has a nodal plane that runs along the center of the molecule, perpendicular to the carbon-carbon double bonds. However, it does not exhibit three vertical nodes.

Nodes in molecular orbitals represent regions where the probability of finding an electron is zero. In the ground state LUMO of 1,3-butadiene, there is a single nodal plane that divides the molecule into two halves, but it does not possess multiple vertical nodes as implied by the statement.

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Answer:

animals

Explanation:

I think I remember this from a quiz I took so exotic species

Answer: A glass of cold milk sometimes forms a coat of water on the outside of the glass (Often referred to as 'sweat'). How does most of the water get there? Water evaporates from the milk and condenses on the outside of the glass. The glass acts like a semi-permeable membrane and allows the water to pass, but not the milk.

Explanation: Hope this helps

Answer:

The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat. Systems that dissipate less energy as heat will be able to do more work than systems that dissipate more energy as heat.

Explanation:

The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat.

Entropy is also a measure of the number of possible arrangements the atoms in a system can have. In this sense, entropy is a measure of uncertainty or randomness.

The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat.

Systems that dissipate less energy as heat will be able to do more work than systems that dissipate more energy as heat.

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In the Calvin cycle, each turn requires three molecules of carbon dioxide to produce one molecule of glucose. Therefore, to produce one molecule of glucose, the Calvin cycle must take place six times.

The Calvin cycle is the series of biochemical reactions that occur in the chloroplasts of plants during photosynthesis. Its main function is to convert carbon dioxide and other compounds into glucose, which serves as an energy source for the plant. The cycle consists of several steps, including carbon fixation, reduction, and regeneration of the starting molecule.

During each turn of the Calvin cycle, one molecule of carbon dioxide is fixed by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO). The carbon dioxide is then converted into a three-carbon compound called 3-phosphoglycerate. Through a series of enzymatic reactions, the 3-phosphoglycerate is further transformed, ultimately leading to the production of one molecule of glucose.

Since each turn of the Calvin cycle incorporates one molecule of carbon dioxide into glucose, and glucose is a hexose sugar consisting of six carbon atoms, it follows that six turns of the cycle are required to produce one molecule of glucose.

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To confirm Newton’s Second Law using a laboratory report, you will need to conduct an experiment using a simulation and gather data. Newton’s Second Law states that force equals mass times acceleration.

Here's how you can write a laboratory report to confirm Newton’s Second Law using the simulation and gathered data. Introduction: This section should include a brief explanation of the theory behind Newton’s Second Law and what you will be testing in your experiment. It should also include your hypothesis.

Procedure: This section should explain the steps you took to conduct your experiment. In this case, it would involve using the simulation to apply different forces to objects with different masses and measuring their acceleration.

Data: This section should present the data you collected during your experiment. It can be presented in tables or graphs, and should include measurements of force, mass, and acceleration for each trial.

Analysis: This section should analyze the data you collected to determine if it supports your hypothesis and confirms Newton’s Second Law.

Conclusion: This section should summarize your findings and draw conclusions based on the data you collected. It should also discuss any errors or limitations of the experiment and suggest areas for further research.

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Answer:

False.

Explanation:

1. Most liquids do not have ionized atoms or particles within them, as the state of matter does not really allow that to freely happen.

2. Liquids may not have a definite shape, however, they have a definite volume. No matter the container you pour them into, their volume remains constant.

3. Liquids are not good conductors of electricity. Take for example water. Pure water does not conduct electricity

Hence, the statement is false with regards to liquids. However, it is true when talking about the foruth state of matter - Plasma

The Delta system describes fatty acids in relation to the Carboxyl  end of the carbon chain and indicates the location of the double bonds.

Four wires make up the Delta configuration: three hot conductors and one ground conductor. The connection is established from one winding end to the starting end of the other, establishing a closed circuit, and the phase loads (such as motor windings) are connected to each other in the shape of a triangle.

The three phases are joined in a triangle-like fashion in the delta arrangement. They typically don't have a neutral cable. With a Y configuration, the phase voltage is equal to the line voltage divided by root 3 (sqrt(3) = 1.732), whereas in a Delta configuration the phase voltage is equal to the line voltage.

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If a substance can be given a chemical formula can be considered to be a(n) compound.

A pure substance made up of two or more different elements combined chemically in a fixed ratio is called a compound.

Compounds are substances composed of different elements bonded chemically; only chemical reactions break the chemical bonds or create new chemical bonds leading a compound to form other substances.

Hence, if a substance can be given a chemical formula can be considered to be a(n) compound.

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The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is 13.071 g.

To arrive at this answer, we add the given values together:

7.5 g + 2.26 g + 1.311 g + 2 g = 13.071 g.

In this case, all the values provided have three decimal places, so the sum is also expressed with three decimal places. Therefore, the correct answer is 13.071 g.It is important to maintain the same level of precision as the least precise value given in the problem, which in this case is 1.311 g. Rounding the answer to 13 g or 13.0 g would result in a loss of #SPJ8 and could lead to an inaccurate representation of the total mass.Therefore, 13.071 g is the correct answer because it accurately reflects the sum of the given values and maintains the appropriate level of precision.

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Answer:

Covalent bonds

Explanation:

Covalent bonding

Covalent bond refers to mutual sharing of electrons between two atoms

The probability density goes to zero al0ng the 'XY' and 'XZ' planes. Therefore, options A:  XY and B:  XZ are correct.

The probability density is a function for which the integral is calculated to find probabilities associated with a continuous random variable. The graph of the probability density is a curve above the horizontal axis that indicates a total area, between itself and the axis, of 1.

Along XY and XZ planes, the probability density goes to zero. Zero probability density means zero chance of noticing the particle in that state.

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c. x-rays

My answer is that x-rays or gamma rays have the greatest (or highest) frequency waves.

Tub and tile scrub, pH = 11.6: basic , Blood, pH = 7.38: slightly basic/neutral

Vinegar, pH = 2.8: acidic

Chemically speaking, the pH scale measures the concentration of hydrogen ions in a solution. A solution with a pH of 7 is considered neutral, while a pH less than 7 is considered acidic, and a pH greater than 7 is considered basic (or alkaline). Based on this scale, the solutions can be identified as follows:

Maple syrup, pH = 4.7: slightly acidic/neutral

Acidic solutions have a pH of less than 7.0. They are characterized by the presence of hydrogen ions (H+) in solution. Examples of acidic solutions include vinegar, which has a pH of 2.8, and lemon juice, which has a pH of 2.3.

Basic solutions have a pH greater than 7.0. They are characterized by the presence of hydroxide ions (OH-) in solution. Examples of basic solutions include household ammonia, which has a pH of 11.0, and baking soda, which has a pH of 8.3.

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In Experiment 2, the gas produced at the negative electrode is typically hydrogen (H2).

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♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

Answer:

hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes, and specific vocabulary has been developed to describe these concentrations in relative terms. A solution is neutral if it contains equal concentrations of hydronium and hydroxide ions; acidic if it contains a greater concentration of hydronium ions than hydroxide ions; and basic if it contains a lesser concentration of hydronium ions than hydroxide ions.

Answer:

hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water

Explanation:

Not my work! I hope this helps!