how does stoichiometry support the law of conservation of mass?(1 point) responses it compares the mass of the products to the number of atoms in the products. it compares the mass of the products to the number of atoms in the products. it compares the mass of each reactant to the mass of each product. it compares the mass of each reactant to the mass of each product. it compares the mass of the products to the mass of the reactants. it compares the mass of the products to the mass of the reactants. it compares the mass of the reactants to the number of moles of reactants. it compares the mass of the reactants to the number of moles of reactants.

Answer:

no I don't listen to them

Answer:

I love his style of Nu Metal and the influence that metal has on his music ultimately. I feel like Zilla fans don't give SosMula enough props tho, he def puts the icing on the cake in every song

Explanation:

In order to find a balanced equation in this question, we need to look at a reaction that presents the same number of the same elements on both sides of the reaction, and the option that presents this is:

Na2CO3 + 2 HCl -> 2 NaCl + CO2 + H2O

Letter D

The change in entropy when 86 g of diethyl ether melts at its melting point is approximately 11.81 J/(mol*K).

To calculate the change in entropy (ΔS) when 86 g of diethyl ether melts, we need to use the equation:
                                      ΔS = AfHf / T
Where AfHf is the heat of fusion (1854 kJ/mol) and T is the melting point temperature.

The melting point of diethyl ether is -116.3°C or 156.85 K (since we need to use Kelvin for temperature in this equation).
First, we need to calculate the number of moles of diethyl ether in 86 g:
86 g / 74.12 g/mol = 1.16 mol

Now, we can calculate the change in entropy:
ΔS = (1854 kJ/mol) / (156.85 K)
ΔS = 11.81 J/(mol*K)
Therefore, the change in entropy when 86 g of diethyl ether melts is 11.81 J/(mol*K).

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To calculate the fraction of morphine present in the form H, we need to determine the ratio of the concentration of H to the total concentration of morphine in the solution.

First, let's calculate the total concentration of morphine in the solution, Total concentration of morphine = concentration of morphine added = 1.27 × 10−6 m ,Next, let's determine the concentration of H. From the given information, Since both cacodylic acid and its conjugate acid are present in equal concentrations , we can assume that the concentration of H is also 10.0 . Now, let's calculate the fraction of morphine present in the form ????H:
Fraction of morphine present asH = Concentration of H / Total concentration of morphine
Fraction of morphine present asH = 10.0 m / 1.27 × 10−6 m

To simplify this fraction, we can convert both concentrations to the same unit (mol/L):
Fraction of morphine present as H = (10.0 m* (1 L / 1000 m)) / (1.27 × 10−6 m * (1 L / 1000 m)) Now, we can calculate the fraction of morphine present in the form H by dividing the two concentrations:
Fraction of morphine present as H = (10.0 m * (1 L / 1000 m)) / (1.27 × 10−6 m * (1 L / 1000 m)) Simplifying the expression further, we get:
Fraction of morphine present as H = 7.87 × 10^6

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The fraction of morphine present in the form ????H is approximately 1.02 × \(10^{-7}\)  M.

The fraction of morphine present in the form ????H can be calculated using the concept of acid-base reactions.

First, let's identify the acid and base in the reaction. In this case, morphine (????) acts as the base, and ????????????H is the acid.

We need to determine the amount of morphine present in the form ????H. To do this, we can use the equation:

Morphine (????) + Acid (????????????H) ⇌ Morphine-H (????H) + Conjugate acid of morphine (????+)

Since the reaction is at equilibrium, we can use the equilibrium expression, which is given by:

K_eq = [????H] / [????][????????????H]

We are given the concentrations of the acid and base, so let's substitute these values into the equation. The concentration of ????????????H is 0.0800 M and the concentration of morphine is 1.27 × \(10^{-6}\) M.

K_eq = [????H] / (1.27 ×\(10^{-6}\) M)(0.0800 M)

Now, we need to find the value of K_eq. Unfortunately, we don't have enough information to calculate the exact value of K_eq. However, we can still determine the fraction of morphine present in the form ????H by making an assumption.

Let's assume that K_eq is equal to 1. This assumption is commonly made when the acid and base concentrations are not significantly different. With this assumption, the equilibrium expression simplifies to:

1 = [????H] / (1.27 × \(10^{-6}\) M)(0.0800 M)

Now, we can solve for [????H] by rearranging the equation:

[????H] = (1.27 × \(10^{-6}\) M)(0.0800 M)

[????H] ≈ 1.02 ×\(10^{-7}\) M

So, the fraction of morphine present in the form ????H is approximately 1.02 × \(10^{-7}\) M.

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Based on the calculations performed in this experiment, the same mass of a solute with a significantly higher molar mass would have a larger effect on the boiling point elevation. As a result, the same mass of a solute with a higher molar mass will have a greater effect on the boiling point elevation.

Boiling point elevation is a thermodynamic phenomenon that occurs when the boiling point of a solvent (a substance that dissolves a solute to create a solution) is increased by adding another substance, the solute, to it. When a solute is added to a solvent, it lowers the freezing point and raises the boiling point of the solvent, which is known as the boiling point elevation.The formula for boiling point elevation is: ∆Tb = Kbm

Here, ∆Tb is the boiling point elevation, Kb is the molal boiling point elevation constant, and m is the molality of the solution. To understand this, let us take an example: Suppose a solution containing 1.0 mol of sodium chloride (NaCl) is dissolved in 1.0 kg of water. The molality of the solution is 1.0 mol / 1.0 kg = 1.0 m. In addition, the Kb for water is 0.51 °C/molal, which means that the boiling point elevation is 0.51 °C when the molality of the solution is 1.0 mol/kg.So, the boiling point of the solution will be raised by 0.51 °C, which can be calculated using the above formula.Calculation performed in this experiment:Boiling point elevation = ΔTb = Kb . mTherefore, based on the above formula, the boiling point elevation is directly proportional to the molality of the solution, which, in turn, is directly proportional to the number of moles of solute in the solution. Furthermore, the number of moles of solute is proportional to the mass of the solute (in grams) divided by its molar mass (in grams/mol).So, if a solute with a significantly higher molar mass is added to the solvent, it will have a larger effect on the boiling point elevation. As a result, the same mass of a solute with a higher molar mass will have a greater effect on the boiling point elevation.

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The balanced nuclear equation for the nuclear fission of 235U into 92Kr and 141Ba can be written as follows:

235U + 1n → 92Kr + 141Ba + 2(1n)

In this equation, a neutron (1n) collides with a uranium-235 (235U) nucleus, resulting in the fission of the uranium nucleus. The fission products are krypton-92 (92Kr) and barium-141 (141Ba), along with the release of two additional neutrons. It is important to note that the equation represents a simplified representation of nuclear fission, and the actual process involves a complex series of reactions and the release of additional particles and energy.

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Answer:

5 mg

Explanation:

If one half life is 4 hours, then 3 half lives is 12 hours.

This means that the sample will decay to 1/8 of its original amount.

So, the answer is 40(1/8) = 5 mg.

evaporation is the process of liquid water changing to water vapor

Answer: The answer is B. The pressure inside the tires increased.

Explanation:

The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:

\($$PV = nRT$$\)

where:

- \(\(P\)\) is the pressure,

- \(\(V\)\) is the volume,

- \(\(n\)\) is the number of moles of gas,

- \(\(R\)\) is the ideal gas constant, and

- \(\(T\)\) is the temperature (in Kelvin).

In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.

So, the answer is B. The pressure inside the tires increased.

Answer:

C. The amount of coffee is the same.

Explanation:

Verified

Answer:

two moles noen

Answer:

The balanced equation for this reaction is:

2HgS + 3O2 -------> 2HgO + 2SO2

Therefore the co-efficents added to HgS, 02, HgO and SO2 to balance this equation are 2, 3, 3,2 respectively.

This chemical reaction demonstrates the conservation of mass as the same number of atoms of each element appear on either side of the equation. This means that the total mass of atoms on the reactant side of the equation will equal the total mass of atoms on the product side of the equation.

Answer:

You could classify nuclear energy as nonrenewable because uranium and similar fuel sources are finite. On the other hand, some people consider nuclear energy renewable because the element thorium and other new technologies may provide infinite fuel needed to power nuclear reactors.

Answer:

e. Mg.

Explanation:

Answer:

\(mg\)

is the answer to your question

Answer:

Hope this helps!

Explanation:

The molar concentration of the H₂SO₄ solution is 1.5 mol/dm3, and the mass concentration is 3.2 g/dm3.

The given problem describes the neutralization reaction between a sulphuric acid solution and a sodium hydroxide (NaOH) solution. The volume of the NaOH solution required to neutralize the H₂SO₄ solution is given as 38 cm3, and its molar concentration is 0.75 mol/dm3. The volume of the H₂SO₄ solution is given as 155 cm3.

The balanced chemical equation for the reaction is:

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

From the equation, it can be inferred that one mole of H₂SO₄ reacts with two moles of NaOH. Thus, the number of moles of NaOH used can be calculated as:

0.75 mol/dm3 x 0.038 dm3 = 0.0285 mol

Since two moles of NaOH are required to react with one mole of H₂SO₄, the number of moles of H₂SO₄ in the given volume can be calculated as:

0.0285 mol/2 = 0.01425 mol

Therefore, the molar concentration of the H₂SO₄ solution is:

0.01425 mol/0.155 dm3 = 1.5 mol/dm3

To calculate the mass concentration, the molar mass of H₂SO₄ needs to be considered, which is 98 g/mol. The mass of H₂SO₄ in the given volume can be calculated as:

1.5 mol/dm3 x 0.155 dm3 x 98 g/mol = 22.77 g

Thus, the mass concentration of the H₂SO₄ solution is:

22.77 g/0.155 dm3 = 3.2 g/dm3

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2-Methyl-2-butanol is a type of alcohol that is also known as tert-butyl alcohol or 2-methylpropyl alcohol.

what are the properties of 2-Methyl-2-butanol ?

It is a clear, colorless liquid that has a characteristic sweet and fruity odor. This alcohol is used in a variety of applications, including as a solvent, as a fuel additive, and as an intermediate in the synthesis of other chemicals. It is also used in the production of various fragrances and flavors, as well as in the formulation of certain pharmaceuticals and personal care products.

2-Methyl-2-butanol (tert-butyl alcohol) is a branched-chain alcohol that is characterized by its four carbon atoms and its secondary alcohol functional group. It is a clear, colorless, and relatively low-volatility liquid that has a low water solubility and a relatively low boiling point compared to other alcohols of similar molecular weight.

In terms of its properties and uses, 2-methyl-2-butanol is an effective solvent for a variety of organic compounds, including resins, fats, and oils, and it is also used as a starting material for the production of other chemicals. As a fuel additive, it can help to increase the octane rating of gasoline, and it can also help to reduce engine knock and improve fuel efficiency.

2-Methyl-2-butanol is a type of alcohol that is also known as tert-butyl alcohol or 2-methylpropyl alcohol.

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If you flow a solution of Na Cl- in water over an Anion resin, what will be in the outlet stream leaving the bed High Resolution. Cost Effective Solutions. High Capacity. Efficient Purification.

A resin or polymer that serves as a medium for ion exchange is known as an ion-exchange resin or ion-exchange polymer. It is an insoluble matrix (or support structure) made from an organic polymer substrate, typically appearing as tiny (0.25-1.43 mm radius) microbeads that are white or bin color. The process is known as ion exchange because the beads are often porous, providing a wide surface area on and inside them where the trapping of ions takes place along with the concomitant release of other ions. Ion-exchange resin comes in many different varieties. Polystyrene sulfonate is the main ingredient in most commercial resins.

Many diverse separation, purification, and decontamination techniques use ion-exchange resins. The most typical examples are water filtration and water softening.

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The temperature of the 45.0 g piece of metal changed from 241 °C to 32.0 °C. is 0.48 j/ 9°C.

Temperature is a measure of the average kinetic energy of the atoms or molecules in the system. The zeroth law of thermodynamics says that no heat is transferred between two objects in thermal equilibrium; therefore, they are the same temperature.

In other words, Temperature is the measure of hotness or coldness of a body measured using Celsius, Kelvin, and Fahrenheit scales. The change in temperature is based on the amount of heat released or absorbed. The S.I unit of temperature is Kelvin. The Temperature formula is given by, Δ T = Q / mc.

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Answer:

=242.47 g of HF

Explanation:

The wavelength of the light is approximately 500 nm. The energy of the photon of light is approximately 6.56 x 10-20 J.

Answer: Question 1:The formula relating wavelength, frequency, and the speed of light is given by:c = fλHere,λ = wavelength, f = frequency, c = speed of lightI. n the problem, frequency is given as 5.98 x 1014 s-1. Therefore, using the formula, the wavelength of light can be calculated as follows:λ = c/f= (3 x 108 m/s)/(5.98 x 1014 s-1)≈ 500 nm

Therefore, the wavelength of the light is approximately 500 nm.

Question 2:The formula relating energy and frequency of light is given by:E = hfwhereE = energy of photonh = Planck's constant = 6.626 x 10-34 J s (Joule seconds)f = frequency of lightIn the problem, the frequency of light is given as 9.89 x 1013 Hz. Therefore, using the formula, the energy of the photon of light can be calculated as follows:E = hf= (6.626 x 10-34 J s) x (9.89 x 1013 Hz)≈ 6.56 x 10-20 J

Therefore, the energy of the photon of light is approximately 6.56 x 10-20 J.

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Answer:

Detail is given below.

Explanation:

Electron:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol= e-

Mass= 9.10938356×10-31 Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

Neutron and proton:

While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

Symbol of proton= P+  

Symbol of neutron= n0  

Mass of proton=1.672623×10-27 Kg

Mass of neutron=1.674929×10-27 Kg

Location of electron, proton and neutron.

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom of nitrogen have 7 protons than it must have 7 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

For example

Mass of nitrogen = number of neutron + number of proton

Mass of nitrogen = 7 + 7 = 14

Atomic number of nitrogen = number of electron or number of proton

Atomic number of nitrogen = 7

Answer:

There are 7 protons, 7 neutrons and 7 electrons in Nitrogen-14. Protons and neutrons are located in the nucleus, while electrons are located in electron shells. The number of protons determines the element's atomic number, the number of protons AND neutrons combined determine the element's mass number, and the average of the masses of all isotopes determines an element's atomic mass.

Explanation:

Hope this helps! :D

Answer:

Flushing goldfish down the toliet

Explanation:

This would help the planet because goldfish are a very evasive species that has been harming our natural enviroments lakes and rivers. Ever since people have been flushing them down the toliet including me since I've had over six they have been finding their ways into our ecosytem and damaging nature. You may think that goldfish are a cute and small pet species to keep in a fish tank but the fish can grow in the right conditons up to 16.1 inches long and can top over five pounds in the wild. Unfortunately most goldfish never thrive like this in fish tanks due to nasty inadequate housing and feeding conditions. And most do not live up to their expected life span in the wild of 15 to even thirty years due to their living conditons. Did you know, goldfish will actually jump out of their tank in a final desperate search for better living conditions and enviroment to live in to meet their physiological needs. But lets get back to the problem so don't be to quick to feel sorry for them, when people flush them down the toliet they repopulate somehow in our lakes and rivers. Even through, it is not clear how they got there, which the suspected culprit is the sewer system. They threaten the natural enviroment tho because they are obnivores and they eat a mixtures of plants and animal specimen. You are probrably thinking why is this a problem, well its because goldfish are particullary greedy eaters and will eat, eat, and feast on the natural envrioment they infestated. And the waste they leave on the enviroment will promote the growth of algae which could cause an extent of enviromental damage. Of course goldfish are not impacted by this algae growth for adaptation reasons which shield them. This is not the main problem tho the main problem of this is that female goldfish can produce up to 1000 eggs at a time. And to make things worse unlike other fish species where the parents of the eggs leave the eggs for predaetors and well the elements of nature the goldfish instead guard their nest foriciously from predaetors that eat fish eggs in which effectively shields the populations young from danger. And to just add to the chaos the goldfish sadly have no real natural predaetor in the unitedstates which just causes more problems since they have no one killing them. And did I mention that they could live up to a real possibility of thirty years. And that they are forocious eaters that could eat a variety of types of foods. All of these facts in the end lead to two things first stop flushing your pet goldfish down the toliet and secondly now you know how golfish impact our planet.

Give brainliest please it took me over thirty minutes of thinking!

The volume of the second portion is 3.75 liters. To solve this problem, let x represent the volume of the second portion. We can then set up the equation

A mathematics statement that expressions are equal is known as an equation. It consists of two expressions separated by an equals sign, and the expressions on either side can be numbers, variables, or a combination of both. Equations are used to solve problems in mathematics, science and engineering, and are fundamental to the study of these disciplines. Equations can be used to describe relationships between different elements of a system, such as the force of gravity on a falling object or the momentum of a moving object. Solving equations involves manipulating the equation to find the values of the unknown variables, and this process is called solving the equation.

4x = 15.0
Solving for x, we get:
x = 15.0 / 4
x = 3.75
Therefore, the volume of the second portion is 3.75 liters.

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When acid-free primer dries, it creates a matte and smooth surface.

Acid-free primers are specially designed to provide a neutral pH level, which means they do not contain any acidic substances that can cause damage to the surface they are applied to. They are commonly used as a base coat before painting or applying any other kind of surface treatment. Acid-free primers create a smooth and even surface that allows paint or other coatings to adhere more effectively. The matte finish also helps to minimize imperfections and create a uniform surface. Using an acid-free primer is especially important when working with delicate or sensitive materials, such as photographs, artwork, or fabrics, as it helps to protect them from damage over time.

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The approximate pH of a 0.2 M solution of boric acid as an eye wash is around 5.14.


To understand how the pH is calculated for a solution of boric acid, it's helpful to have a basic understanding of acid-base chemistry. When an acid is dissolved in water, it donates a hydrogen ion (H+) to the water molecules, forming hydronium ions (H3O+). The more hydrogen ions present in the solution, the lower the pH (since pH is a measure of the concentration of hydrogen ions).

Boric acid (H3BO3) is a weak acid, which means it only partially dissociates in water. It donates a hydrogen ion to form the conjugate base (H2BO3^-), but some of the molecules remain undissociated. The acid dissociation constant (Ka) is a measure of how much of the acid dissociates, and is calculated by dividing the concentration of the conjugate base by the concentration of the acid.

For boric acid, Ka is 5.8 x 10^-10. This is a very small number, which means the acid is not very strong. To calculate the pH of a 0.2 M solution of boric acid, we use the formula:

pH = (1/2) x (-log(Ka) + log([HA]))

where [HA] is the concentration of the acid (0.2 M). The factor of 1/2 is because boric acid donates two protons (H+) when it dissociates, but the dissociation is incomplete, so we only count half of the protons.

Plugging in the values, we get:

pH = (1/2) x (-log(5.8 x 10^-10) + log(0.2)) = 5.14

So the pH of a 0.2 M solution of boric acid as an eye wash is approximately 5.14. This is slightly acidic, but still within the safe range for eye wash solutions.

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Answer:

Elements

Explanation:

Elements cannot be broken down into a simpler substance

Answer:

Cation metal. Positive charge.

Answer:

DHS has been working hard for years and it is still unclear whether this would happen if it is to end the market with the engine is a little less than the next 5years to be 8years in the first quarter and the same year in a quarter or less than a quarter or more than that

Considering the definition of ideal gas law, the volume of the Krypton gas is 3840 mL.

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas. The universal constant of ideal gases R has the same value for all gaseous substances.

Now, taking into account this law, and isolating the pressure variable (P), you get:

\(V=\frac{nxRxT}{P}\)

In this case, you know:

Replacing in the ideal gas law:

\(V=\frac{0.119 molesx0.082 \frac{atmL}{moleK}x298K}{0.756579 atm}\)

Solving:

V=3.84 L= 3840 mL (being 1 L=1000 mL)

Finally, the volume of the Krypton gas is 3840 mL.

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