Find the volume of a cereal box that has the dimensions of 35.2 cm x 220 cm x 6.0 cm

The mixture of sodium chloride and broken glasses can be separated by dissolution, filtration, and evaporation respectively.

The mixture containing sodium chloride and broken glasses can be separated as follos:

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Answer:

don't no answer

Explanation:

d don't no answer

At the end of the diffusion process, the concentration of substances on each side is. equal. This is because the diffusion process causes the substances to move from areas of high concentration to areas of low concentration until they are evenly distributed.

What is concentration?
Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molarity, number concentration, as well as volume concentration are four different categories of mathematical description. Any type of chemical mixture can be referred to by the term "concentration," but solutes as well as solvents in solutions are most frequently mentioned. There are different types of molar (amount) concentration, including normal concentration as well as osmotic concentration. The word "concentration" is derived from the French verb "concentrer," which means "to put at the centre" and comes from the root con-.

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Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)

Explanation:

Answer:

Modern science is typically divided into three major branches that consist of the natural sciences (e.g., biology, chemistry, and physics), which study nature in the broadest sense; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences

Answer: Example: Find the molecular of the water molecule. Solution: The formula of the water molecule is H₂O. The atomic mass of hydrogen = 1 amu. The atomic mass of oxygen = 16 amu. Molar mass of water = 2 *1 + 16 = 18 amu. Example: What will be the relative molar mass of the hydrogen molecule. Solution: Hydrogen molecule represented by H₂.

hope this works

To balance a chemical equation, both sides should have equal mass, or in other words both sides should have same number of atoms as to follow the conservation of mass rule.

P + O₂ = P₄O₆

LHS:

Number of Phosphorus atoms = 1 atom

Number of Oxygen atoms = 2 atoms

RHS:

Number of Phosphorous atoms = 4 atoms

Number of Oxygen atoms = 6 atoms

Also since P₄O₆ has the most number of atoms we will make the LHS equalize to P₄O₆.

Difference between Phosphorous atoms in LHS to RHS = 3

Since phosphorous is a monatomic we need 3 phosphorous atoms extra

Difference between Oxygen atoms is LHS to RHS = 4

But Oxygen is diatomic, so we need 4/2 = 2 Oxygen molecules

Now lets see if it is balanced

P + 3P + O₂ + 2O₂ -------> P₄O₆

               4P + 3O₂ ------>  P₄O₆

LHS:

Phosphorous atoms = 4 atoms

Oxygen atoms = 3 × 2 = 6 atoms

RHS:

Phosphorous atoms = 4 atoms

Oxygen atoms = 6 atoms

LHS = RHS

Therefore the balanced equation is 4P + 3O₂ =  P₄O₆

Happy to help :)

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Aluminum oxide has a chemical formula of Al2O3.

A white, odorless powder known as aluminum oxide. Insoluble in water. The preparation process affects the properties (both physical and chemical); various preparation techniques result in various crystalline changes. The variation created at really high temperatures is chemically quite inert. Technical grade alumina is mostly made of alpha-Alumina. Natural aluminum oxide is corundum. Aluminum oxide comes in an impure crystalline version called Emery. (NIOSH, 2022).

an aluminum oxide that can be found in nature as different minerals such as bauxite, corundum, etc. It is employed in the production of dental cement, and refractories, and as a catalyst, desiccating agent, and adsorbent.

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Answer:

The short general principle of solubility states that "like dissolves like." Solvents that have similar polarity or charge to the solute tend to dissolve it more readily.

Solubility is the ability of a substance to dissolve based on chemical nature, intermolecular forces, and "like dissolves like" principle. Factors like particle size, temperature, and pressure affect solubility. It is expressed as the maximum amount of solute that can dissolve in a solvent.

Answer:

ide

Explanation:

the metal keeps its name in an ionic compound, the suffix of the nonmetal is changed to "ide" (ie sodium chloride, NaCl)

The given unbalanced reaction, Fe + HCl → FeCl\(_{3}\) + H\(^{2}\), can be classified as a single replacement reaction. Option A.

This is because the iron (Fe) is replacing the hydrogen (H) in hydrochloric acid (HCl) to form iron (III) chloride (FeCl\(_{3}\)) and hydrogen gas (H\(^{2}\)). In a single replacement reaction, one element replaces another in a compound. In this case, Fe replaces H in HCl to form FeCl\(_{3}\) and H\(^{2}\). The other reaction types are not applicable to this reaction.

A combination reaction involves two or more reactants combining to form a single product. A double replacement reaction involves two compounds exchanging ions to form two new compounds. A combustion reaction involves the reaction of a fuel with oxygen to produce carbon dioxide and water. A decomposition reaction involves a single reactant breaking down into two or more simpler products. Therefore, the classification for this unbalanced reaction is single replacement. Option A.

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The amount of water that should be added to 28 ml of 15​% alcohol solution to reduce the concentration to ​14% is: 2 ml

To solve this problem, the formula and the procedure that we have to use is:

c1 * v1 = c2 * v2

Where:

Information about the problem:

Applying the dissolution of concentrations formula and clearing the volume of the diluted solution (v2) we get:

c1 * v1 = c2 * v2

v2 = (c1 * v1)/ c2

v2 = (15% * 28 ml)/ 14%

v2= 30 ml

In order to know how much water should be added we have to subtract 28 ml from the volume of the diluted solution:

amount of water should be added = v2 - v1

amount of water should be added = 30 ml - 28 ml

amount of water should be added = 2 ml

In chemistry a solution is known as a homogeneous mixture of two or more components called:

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The volume of 1.5 × 10^(-2) M NaOH that must be added to 500 mL of 0.2 M HCl to give a solution that has a pH of 2.15 is 6.67 mL.

To solve this problem, we first need to write the balanced chemical equation for the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl), which is

NaOH + HCl → NaCl + H2O.

We are given the initial concentration of HCl as 0.2 M. We then use the pH value, which is 2.15, and the relationship between pH and the concentration of hydrogen ions ([H+]) to calculate the concentration of [H+] in the final solution.

Using the equation pH = -log[H+] and [H+] = 10^(-pH),

pH = -log[H+]

[H+] = 10^(-pH)

[H+] = 10^(-2.15) = 7.08 × 10^(-3) M

we find that [H+] = 7.08 × 10^(-3) M.

Next, we need to determine the mole ratio of NaOH to HCl, which we can find from the balanced chemical equation as 1:1. We then calculate the amount of NaOH required to react with all of the HCl in the initial solution, which is 0.1 moles.

moles of HCl = concentration × volume = 0.2 M × 0.5 L = 0.1 moles

moles of NaOH = 0.1 moles

Finally, we need to calculate the volume of 1.5 × 10^(-2) M NaOH required to provide 0.1 moles of NaOH.

moles of NaOH = concentration × volume

volume = moles of NaOH / concentration

volume = 0.1 moles / 1.5 × 10^(-2) M = 6.67 L

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The total mass of the products is 125 g

The law of conservation of mass, also known as the principle of mass conservation, states that the total mass of a closed system remains constant over time, regardless of the changes that may occur within the system. This means that the mass of the system can change form, but the total mass remains the same.

The law of conservation of mass is a fundamental principle in physics and is widely accepted as a basic law of nature. It is based on the idea that matter can be neither created nor destroyed, only transformed from one form to another.

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Answer: The genotype is the set of genes in our DNA which is responsible for a particular trait. The phenotype is the physical expression, or characteristics, of that trait. For example, two organisms that have even the minutest difference in their genes are said to have different genotypes.

Answer:

Nothing. I guess ice vapor is a solid and water vapor is a liquid if nothing isn't an option, but that makes no sense.

Explanation:

Answer: C

Explanation:

We can research about the growth rate of plant that the water has been given, since we already did 10 mL. It would be best if we research more to see if 20 mL is enough water for the plant or will it make the plant go turgid and flaccid!

An alpha particle emission causes the atomic number of a nuclide to decrease by 2 and its mass number to decrease by 4.

Nuclear Emission explains the release of energy stored in the nucleus of an atom in the form of particles like alpha particles, beta particles, gamma ray etc.

When a nucleus emits an alpha particle, it loses 2 protons and 2 neutrons, so its atomic number decreases by 2 and its mass number decreases by 4.

Hence, option 1 is correct.

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There are 2.716 moles are present in 500 gm of MgBr₂

The mass of a sample of a chemical compound is divided by the quantity of that substance, or the number of moles in the sample, measured in moles, to obtain the compound's molar mass in chemistry.

MgBr₂ is known as Magnesium bromide.

It is given that, Magnesium bromide of molar mass = 184.11 g/mol

As we know,

184.11 gm Magnesium bromide contains 1 mol

So, 500 gm Magnesium bromide contains 500 ÷ 184.11 = 2.716 mol

Thus, 2.716 moles are present in 500 gm of MgBr₂

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Answer:

Biodiversity will decrease.

Explanation:

Biodiversity will decrease when new fields are cleared and this often leads to habitat loss.

The most likely result of a field being cleared to build homes is the decrease in the biodiversity.

Biodiversity tells about the different kind of lives of living organism on the earth.

Before building a house we always cleared the place where house is going to build and due to this cleaning activity many organism will dead, because of the loss of their habitat. Many small organism like bacteria, fungi, algae, etc. are living in the grass or on the ground and biodiversity balance affects.

Hence, the result of a field being cleared to build homes is the decrease in the biodiversity.

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The atmospheric pressure on top of Mt. Everest is 35.33 kPa.

The atmospheric pressure on top of Mt. Everest is 265 mmHg. To convert this value to kPa, we need to know the definition of mmHg and kPa.

The definition of mmHg is the amount of pressure exerted by a column of mercury that is 1 millimeter high at standard gravity. The definition of kPa is the amount of pressure exerted by 1000 newtons of force over an area of 1 square meter.

To convert from mmHg to kPa, we can use the following conversion factor:

1 mmHg = 0.133322 kPa

So, to convert 265 mmHg to kPa, we can multiply by the conversion factor:

265 mmHg * 0.133322 kPa/mmHg = 35.33 kPa

Therefore, the atmospheric pressure is 35.33 kPa.

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The pH scale ranges from 0 to 14, with values below 7 considered acidic, 7 being neutral, and values above 7 being alkaline. Hair and scalp have a slightly acidic pH, and using a pH-balanced shampoo helps maintain the natural balance.

The characteristic that identifies a pH-balanced shampoo is having a pH level close to the natural pH level of the hair and scalp, which is around 4.5 to 5.5. Therefore, a pH-balanced shampoo will have a pH level in the acidic to neutral range, typically between 4.5 and 5.5, to avoid causing damage or disrupting the natural pH balance of the hair and scalp.

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A pH-balanced shampoo should have a pH between 4.5 and 5.5, contain mild acids or bases, and help to keep the hair and scalp's natural pH level balanced.

A pH-balanced shampoo is important because it prevents the scalp from becoming too dry or too oily. It ensures that the hair cuticle is closed, reducing frizz and improving shine. Using a pH-balanced shampoo can also help maintain the effectiveness of other hair products.

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Answer:

the answer is radiation

Considering the definition of STP conditions and reaction stoichiometry, the volume of excess reactant that remains after the reaction is complete is 4.928 L.

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In first place, the balanced reaction is:

CH₄ + 2 O₂  → CO₂ + 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

You know that in a certain reaction at STP, 29.2 L of methane CH₄ is combusted with 63.3 L of oxygen O₂.

Considering the definition of STP, you can apply the following rules of three:

\(amount of moles of methane=\frac{29.2 Lx1 mole}{22.4 L}\)

amount of moles of methane= 1.30 moles

\(amount of moles of oxygen=\frac{63.3 Lx1 mole}{22.4 L}\)

amount of moles of oxygen= 2.82 moles

Now you can apply the following rule of three to determine the excess reagent: if by stoichiometry 2 moles of O₂ reacts with 1 mole of CH₄, if 2.82 moles of O₂ react, how much moles of CH₄ will be needed?

\(moles of CH_{4} =\frac{2.82 moles of O_{2}x 1 moles of CH_{4}}{2 moles of O_{2}}\)

moles of CH₄= 1.41 moles

But 1.41 moles of CH₄ are not available, 1.30 moles are available. Since you have less moles than you need to react with 2.82 moles of O₂, methane CH₄ will be the limiting reagent. And oxygen O₂ is excess reagent.

Now you can apply the following rule of three to the amount of O₂ that reacts when the limiting reactant reacts completely: if by stoichiometry 1 mole of CH₄ reacts with 2 moles of O₂, if 1.30 mole of CH₄ react, how much moles of O₂ will be needed?

\(moles of O_{2} =\frac{2 moles of O_{2}x 1.30 moles of CH_{4}}{1 moles of CH_{4}}\)

moles of CH₄= 2.60 moles

So, after the reaction is complete, the moles of excess reactant that remains are calculated as:

2.82 moles - 2.60 moles= 0.22 moles

Finally, considering the definition of STP, you can apply the following rule of three: if by definition of STP conditions 1 mole of O₂ occupies a volume of 22.4 liters, 0.22 moles occupies how much volume?

\(volume=\frac{0.22 molesx22.4 L}{1 mole}\)

volume= 4.928 L

In summary, the volume of excess reactant that remains after the reaction is complete is 4.928 L.

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Titration is the correct answer.

What is titration?

Titration, commonly referred to as titrimetry, is a typical quantitative chemical analysis method used in laboratories to ascertain the unidentified quantity of an analyte (Mednick and Kirschner, 2010). Titration is frequently referred to as volumetric analysis because it relies heavily on volume measurements. To determine concentration, a solution of the analyte or titrant reacts with a known concentration and volume of the titrant. Titrations come in a variety of forms with various protocols and objectives. Redox and acid-base titrations are the two most typical types of qualitative titrations.

Acid-base titrations rely on the solution-based neutralisation of an acid and a base. The acid-base indicator changes colour to signal when the titration has reached its endpoint.

Titrations carried out in the gas phase are known as "gas phase titrations," and they are specifically used to identify reactive species through their reaction with an excess of a titrant gas. In one typical gas phase titration, nitrogen oxide and gaseous ozone are titrated in accordance with the reaction

The amount of analyte in the initial sample is determined by quantifying the remaining titrant and product after the reaction has finished (for example, using FT-IR).

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Solution of an unknown concentration that has another solution slowly added to it _____________.

The first set of quantum numbers is invalid. According to the quantum number rules, the principal quantum number (n) must be a positive integer greater than zero. However, in this set, the principal quantum number is listed as -3, which violates this rule. Additionally, the azimuthal quantum number (l) should be an integer ranging from 0 to (n-1), but in this set, it is given as 2, which is outside the allowed range. The magnetic quantum number (m_l) should also be an integer ranging from -l to +l, but in this set, it is given as -3, which exceeds the allowed range for the given azimuthal quantum number.

The second set of quantum numbers is valid. The principal quantum number (n) is listed as 4, which satisfies the rule that it should be a positive integer greater than zero. The azimuthal quantum number (l) is given as 2, which is within the allowed range of values (0 to n-1). The magnetic quantum number (m_l) is listed as -1, which also falls within the acceptable range of values (-l to +l) for the given azimuthal quantum number.

In summary, the first set of quantum numbers is invalid due to violations of the rules regarding the principal quantum number, the azimuthal quantum number, and the magnetic quantum number. On the other hand, the second set of quantum numbers is valid as it adheres to the rules for each quantum number.

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Answer:

See explanation.

Explanation:

Hello there!

In this case, according to the described chemical reaction, we first write the corresponding equation to obtain:

\(Cu+2AgNO_3\rightarrow 2Ag+Cu(NO_3)_2\)

Thus, we proceed as follows:

Part 1 of 3: here, since the molar mass of silver and copper (II) nitrate are 107.87 and 187.55 g/mol respectively, and the mole ratio of the former to the latter is 2:1, we can set up the following stoichiometric expression:

\(m_{Cu(NO_3)_2}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{1molCu(NO_3)_2}{2molAg}*\frac{187.55gCu(NO_3)_2}{1molCu(NO_3)_2} \\\\m_{Cu(NO_3)_2}=1.12gCu(NO_3)_2\)

Part 2 of 3: here, the molar mass of copper is 63.55 g/mol and the mole ratio of silver to copper is 2:1, the mass of the former that was used to start the reaction was:

\(m_{Cu}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{1molCu}{2molAg}*\frac{63.55gCu)_2}{1molCu} \\\\m_{Cu}=0.380gCu\)

Part 3 of 3: here, the molar mass of silver nitrate is 169.87 g/mol and their mole ratio 2:2, thus, the mass of initial silver nitrate is:

\(m_{AgNO_3}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{2molAgNO_3}{2molAg}*\frac{169.87gAgNO_3}{1molAgNO_3} \\\\m_{AgNO_3}=2.03gAgNO_3\)

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Answer:

Due to the difference in the relative atomic masses and therefore, the molecular masses of Zn and Pb, one mole of Zn is about 3.2 times lighter than one mole of Pb

Explanation:

From the periodic table, we have;

The atomic number of zinc, Zn = 30

The atomic mass of zinc, Zn = 65.38 amu

The molar mass of zinc, Zn = 65.38 g/mol

The atomic number of lead, Pb = 82

The atomic mass of lead, Pb = 207.2 amu

The molar mass of lead, Pb = 207.2 g/mol

Therefore, whereby equal number of moles of Zn is lost and Pb is gained, we have;

Mass of 1 mole of Zn = 65.38 grams

Therefore, 1 gram of Zn = 1/65.38 moles = 0.0153 moles

0.12 grams of Zn = 0.12×0.0153 = 0.00184 moles of Zn

Given that equal number of moles of Zn and Pb are involved in the reaction, the number of moles of Pb gained = 0.00184 moles

The mass of Pb gained = Number of moles of Pb gained × Molar mass of Pb

The mass of Pb gained = 0.00184 × 207.2 = 0.38 g ≈ 0.4 g.

Amount of Pb gained = 0.43 g ≈ 0.4 g