balance the following equation in basic solution: no2(g) → no2-(aq) no3-(aq) what is the coefficient of water

Answer:

Okay so set up an equation for what's happening

_C + _H + _Cl + O2 --> _CO2 + _H2O

0.451g of CO2. Convert to moles by using the molar mass of CO2 which is 44 g/mol. Now look at the ratio between Carbon and Oxygen in CO2. It's 1C:2O You just want to find C.. so do the number of moles CO2 and multiply it by 1 since the ratio says 1 carbon atom. Now you have moles of carbon. Put this number aside for later.

Do the same thing with H2O. Convert to moles by using the molar mass of H2O which is 18 g/mol. Now look at the ratio between Hydrogen and Oxygen. It's 2H:1O You just want H.. so do the number of moles of H2O and multiply it by 2 since there's 2 hydrogen atoms. Now you have the moles of hydrogen & put this number aside for later

Lastly, you need to find the chlorine. uuhhh I cant figure this part out

Explanation: ..

I hope I helped lol!

Answer:

Explanation:B..the number of protons and neutrons are unique.

Answer:

(b)  19.9 moles

Explanation:

To convert from moles Al to moles O₂, you need to multiply the given value by the mole-to-mole ratio of each component. This ratio is constructed via the coefficients in the balanced reaction. The desired unit (moles O₂) should be placed in the numerator to allow for the cancellation of units.

2 Al₂O₃ ----> 4 Al + 3 O₂
                    ^         ^            

26.5 moles Al           3 moles O₂
---------------------  x  ----------------------  =  19.9 moles O₂
                                 4 moles Al

A single absorption band is not sufficient to distinguish between water vapor and carbon dioxide in the gas phase.

In the gas phase, both water vapor (H2O) and carbon dioxide (CO2) exhibit multiple absorption bands in the infrared region of the electromagnetic spectrum. Each molecule has its unique set of vibrational and rotational modes, which result in specific absorption frequencies. While there may be some overlap in the absorption bands of water vapor and carbon dioxide, their distinct molecular structures and vibrational characteristics lead to different absorption patterns.

To accurately differentiate between water vapor and carbon dioxide, multiple absorption bands need to be examined. Spectroscopic techniques such as infrared spectroscopy or laser absorption spectroscopy can be employed, where the absorption spectra of the gases are compared with known reference spectra or analyzed using computational methods. By examining the absorption peaks and their corresponding wavelengths, it becomes possible to identify the presence of water vapor or carbon dioxide and determine their respective concentrations.

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Answer: 16.5% First, determine the total error by subtracting the accepted value from the value you measured. e = 17.7 -21.2 = -3.5 Then

divide the error

Explanation:

The amount of heat that would be given out is 14.1kJ.

Heat capacity is a physical property that describes the amount of heat required to raise the temperature of a substance by one degree Celsius. We know that the heat capacity of steam is 2J/g/°C.

We can tell that;

H = mcdT

H = heat that is absorbed or evolved

m = mass of the object

c = Heat capacity of the object

dT = temperature change

Then we have that;

H = 150 * 2 * (98 - 145)

H = -14.1kJ This is the heart lost

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The correct option is (d) Carbon Dioxide.

Explanation:

The density of air is around 1.2 g/L, which means that any gas with a density above this value is more dense than air.

Carbon dioxide has a density of approximately 1.98 g/L, which is considerably more dense than air (composed of nitrogen and oxygen).

As a result, if a gas sample is determined to be more dense than air, it is likely to be carbon dioxide (CO2), which has a molecular weight of 44 g/mol.

Carbon dioxide is produced in the laboratory by many chemical reactions and is commonly employed in the food and beverage industries, such as carbonating soda and beer.

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Molar expansion accounts for the changes in the number of moles of a component within a reactor and can have a significant impact on the volume of a plug flow reactor, particularly in cases where the reactor volume is not constant.

(iii) "ei" is commonly used to represent the molar expansion term in chemical reaction engineering equations. It refers to the change in molar flow rate of a particular component i per unit time, per unit volume. The molar expansion term accounts for the variation in the number of moles of a component within a reactor due to chemical reactions or phase changes.

In a plug flow reactor, molar expansion can have different impacts on the reactor volume depending on the specific case. In part (i), where there is a constant volume, the molar expansion does not affect the reactor volume. The molar flow rates of reactants and products may change due to reactions, but the overall volume remains constant.

In part (ii), where the reactor is a semi-batch reactor with a varying volume, the molar expansion can significantly influence the volume of the reactor. As the reaction proceeds, the molar flow rates of reactants and products change, which can lead to changes in the total number of moles and, consequently, impact the reactor volume. The volume may increase or decrease depending on the molar expansion and the specific reaction taking place.

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Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\\)

actual mass = 24.3

error = 24.3 - 14.7 = 9.6

We have

\(p(\%) = \frac{9.6}{24.3} \times 100 \\ = 39.506172839...\)

We have the final answer as

Hope this helps you

The melting point of 4-cyclohexene-cis-1,2-dicarboxylic anhydride (often abbreviated as "4-cylohexene-1,2-dicarboxylic anhydride") is approximately 102-103 °C.

The typical definition of the melting point is the temperature at which a substance transforms from a solid to a liquid. The melting point of a liquid is the temperature at which the liquid transforms from a solid to a liquid under atmospheric pressure. This is the location where the liquid and solid phases are equally present.

The temperature at which molecules in a solid can pass one another and transform into a liquid is known as the melting point. On the other hand, liquids and gases are involved in the boiling point.

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To be an effective disinfectant, bleach needs to contain chlorine bleach as its active ingredient. Chlorine bleach works by breaking down the proteins, enzymes, and other molecules inside bacteria and viruses, ultimately killing them.

Other ingredients such as perm solution, ointments, or foaming agents are not necessary for bleach to effectively disinfect surfaces. It is important to use bleach according to the instructions on the label, as it can be dangerous if not used properly. Additionally, bleach should not be mixed with other cleaning products, as this can create toxic fumes.

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The balanced equation of magnesium and sulfuric acid is:

The student was have seen an explosive reaction if sodium was placed in water.

The order of the reactivities of the metals from most to least reactive is: lithium >> calcium >> copper

It would be difficult to determine the order of reactivity of magnesium and zinc because they show the same reaction. This can be determined by finding out which metal displaces the other from the solution of their salt.

Reactive metals are metals that easily form positive ions by readily giving up or donating their electrons.

The reactive metals are mainly found in group 1A and group 2A of the periodic table.

Reactive metals react with water to liberate hydrogen gas.

For example: 2 Li (s) + 2 H₂O ---> 2 LiOH (aq) + H₂ (g)

Reactive metals react with dilute acids to liberate hydrogen gas and form salts.

Mg + 2 HCl (aq) ---> MgCl₂ (aq) + H₂ (g)

The rate of the reactions above decreases with a decrease in the reactivity of the reactive metals.

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To convert milliliters (mL) to liters (L), you need to divide the milliliter value by 1000, as there are 1000 milliliters in one liter.

Here's the formula for converting milliliters to liters:

Liters = Milliliters / 1000

For example, if you have 5000 milliliters, the conversion to liters would be:

Liters = 5000 mL / 1000 = 5 L

So, 5000 milliliters is equivalent to 5 liters.

Answer:56.26g

Explanation:25 moles of hydrogen 50.0g can react with 12.5 moles of oxygen (12.5x32g). so oxygen is limiting reagent, reaction proceed accordingly. 50.0g of oxygen can produce =(50 x 36)/36 = 56.25g

56.25g is the mass of water that can be produced by the reaction of 50.0 g o2 in excess hydrogen gas.

A body's mass is an inherent quality. Prior to the discovery of a atom or particle physics, it was widely considered to be tied to the amount of matter inside a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses.

There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent. As a measure of a body's inertia, or the resistance towards acceleration whenever a net force is placed on the mass can be conceptualised empirically. The gravitational pull an object has on other bodies is also influenced by its mass.

25 moles of hydrogen 50.0g can react with 12.5 moles of oxygen

oxygen is limiting reagent

50.0g of oxygen can produce =(50 x 36)/36 = 56.25g

Therefore, 56.25g is the mass of water that can be produced by the reaction of 50.0 g o2 in excess hydrogen gas.

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Answer:

Explanation:

Alexander Fleming's hypothesis was that the juice that was produced by the mold that appeared in the petri dishes was killing the bacteria growing there (streptococcus, meningococcus and the diphtheria bacillus).

Answer:

He thought the mold had released a chemical that prevented the bacteria’s growth.

Explanation:

Gradpoint

Answer:

i guess none of these or 3.4% for 10%

Explanation:

I think the answer should be in the 30 to 40 number scale

The most appropriate reagent for the conversion of (R)-3-hexanol to the corresponding tosylate ester (TSC) is option C: TsOOCCH₃, pyridine.

For the conversion of (R)-3-hexanol to the corresponding tosylate ester (TSC), the most appropriate reagent is TsOOCCH₃ with pyridine

Tosylation involves the substitution of the hydroxyl group in an alcohol with a tosylate group (-OTs), which is achieved through the reaction with a tosylating reagent.

In this case, TsOOCCH₃ serves as the tosylating reagent. It contains a tosyl group (Ts) attached to an ester (OCCH₃) group. The reaction is typically facilitated by the addition of pyridine as a base to remove the resulting acid.

Pyridine helps in the deprotonation of the hydroxyl group, enhancing the reactivity of the alcohol towards tosylation. It also acts as a solvent and helps to maintain the reaction conditions.

By using TsOOCCH₃ with pyridine, the (R)-3-hexanol can be converted into the corresponding tosylate ester (TSC), allowing for further transformations or reactions utilizing the tosylate functional group.

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Many scientists are dependent on the government for funding for many reasons. One of the main reasons is that research is often too expensive to carry out without the help of the government. Option b)

The government plays a major role in scientific research, especially in areas of national interest. Government research funding plays an important role in promoting scientific inquiry and advancing knowledge of the natural world. The government is in charge of allocating research funds to public and private organizations. For scientists who want to carry out their research, it can be challenging to find funding from other sources, such as private companies.

As a result, the majority of researchers rely on government grants to finance their work. This dependence on government funding has advantages and disadvantages . One of the advantages is that it ensures that scientific research is carried out in areas that are of national interest. By prioritizing funding for specific areas, the government can direct research toward those issues that are considered important to the country. Another advantage is that it can lead to more innovation. Government grants often provide funding for research that might not be carried out otherwise, such as new technologies or techniques. This can result in breakthroughs that lead to new products, services, or ideas.However, there are also some disadvantages to being dependent on government funding. One of the main drawbacks is that it can lead to a lack of independence. Researchers who rely on government grants may feel obligated to focus on areas that the government deems important, rather than pursuing their own interests or those that are considered unconventional. Another disadvantage is that government funding can be unpredictable. Grants are usually awarded for a limited period of time and may be subject to budget cuts or changes in priorities. As a result, scientists may have to constantly seek new sources of funding or may be forced to abandon their research projects. Hence option b) is correct.

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The Pauli exclusion principle guarantees that no two electrons in the same atom have the same quantum number description. This means that the maximum number of electrons that can be accommodated by any orbital is two.

These are the four groups of quantum numbers:

The electrons ought to be in opposition to one another. If one electron has an upward spin, the other electron in the same orbital should have a downward spin.

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For the molecular formula of aspartame, the artificial sweetener marketed as NutraSweet, is \(C_{14}H_{18}N_2O_5\),

a. the molar mass of aspartame is 294.30 g/mol.

b. there are 3.40 x \(10^{-6}\) moles of aspartame in 1.00 mg of aspartame.

c. there are 2.05 x \(10^{18}\) molecules of aspartame in 1.00 mg of aspartame.

d. the total number of hydrogen atoms in 1.00 mg of aspartame is 34 hydrogen atoms.

a. The molar mass of aspartame can be calculated by adding up the atomic masses of all its atoms:

Molar mass of aspartame = (14 x 12.01 g/mol) + (18 x 1.01 g/mol) + (2 x 14.01 g/mol) + (5 x 16.00 g/mol) = 294.30 g/mol

Therefore, the molar mass of aspartame is 294.30 g/mol.

b. The number of moles of aspartame present in 1.00 mg of aspartame can be calculated using the formula:

moles = mass/molar mass

moles = 1.00 mg / 294.30 g/mol = 3.40 x 10^-6 mol

Therefore, there are 3.40 x 10^-6 moles of aspartame in 1.00 mg of aspartame.

c. The number of molecules of aspartame present in 1.00 mg of aspartame can be calculated using Avogadro's number:

number of molecules = moles x Avogadro's number

number of molecules = 3.40 x \(10^{-6}\) mol x 6.02 x \(10^{23}\) molecules/mol = 2.05 x \(10^{18}\) molecules

Therefore, there are 2.05 x 10^18 molecules of aspartame in 1.00 mg of aspartame.

d. The number of hydrogen atoms present in 1.00 mg of aspartame can be calculated as follows:

There are 14 carbon atoms in 1.00 mg of aspartame, and each carbon atom is bonded to two hydrogen atoms. Therefore, there are 28 hydrogen atoms bonded to carbon atoms.

There are 2 nitrogen atoms in 1.00 mg of aspartame, and each nitrogen atom is bonded to three hydrogen atoms. Therefore, there are 6 hydrogen atoms bonded to nitrogen atoms.

There are 5 oxygen atoms in 1.00 mg of aspartame, and each oxygen atom is not bonded to any hydrogen atoms.

Therefore, the total number of hydrogen atoms in 1.00 mg of aspartame is 28 + 6 + 0 = 34 hydrogen atoms.

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Explanation:

To determine the change in pH, we need to know the concentration of the sodium hydroxide (NaOH) solution. The concentration of a solution is defined as the amount of solute (in this case, NaOH) per unit volume of solvent (in this case, water). The concentration of a solution is usually expressed in units of moles per liter (M).

Since the mass of NaOH and the volume of the solution are given, we can calculate the concentration of the NaOH solution using the formula:

[NaOH] = mass / (molar mass * volume)

The molar mass of NaOH is 39.997 g/mol, so the concentration of the NaOH solution is:

[NaOH] = 2.00 g / (39.997 g/mol * 2.0 L) = 0.0500 M

Since sodium hydroxide is a strong base, it will completely dissociate into sodium ions (Na+) and hydroxide ions (OH-) in solution. The concentration of hydroxide ions in the solution is therefore equal to the concentration of the NaOH solution. The pH of a solution is defined as the negative logarithm of the concentration of hydrogen ions (H+) in the solution. Since the concentration of H+ ions in a basic solution is very low, the pH of a basic solution is very high.

The change in pH can be calculated using the formula:

pH = -log[H+]

Substituting the concentration of hydroxide ions for [H+] and solving for pH, we find that the change in pH is:

pH = -log[OH-] = -log(0.0500 M) = 3.30

The pH of the solution will increase from 7.0 to 10.3 as a result of adding 2.00 grams of NaOH to 2.0 liters of distilled water.

Answer:

resend again that question dear

This solution has a pH of 7. As hydrogen and hydroxide ions are present in equal amounts in a pH 7 solution, it is neutral.

Atoms bearing an electric charge, such the hydrogen atom with charge H+, which has a value of 1, are known as ions. Even in pure water, ions frequently appear as a result of chance occurrences (producing some H+ and OH- ions).

We use the following formula to determine the pH of the solution:

pH = -log[H+]

where [H+] represents the number of hydrogen ions present in the solution.

Substituting the given concentration [H+] = 1.0 x 10⁻⁷ mol/L into the formula, we get:

pH = -log(1.0 x 10⁻⁷)

= 7

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An infrared wave has a wavelength of 0.00005 m. this wavelength in scientific notation is 5.0 × 10⁻⁵ m.

Scientific notation is also called as standard form. Scientific notation is used to express the number that is too large number  or too small is  convenient written in a decimal form. scientific notation contains two part decimal number multiply power of 10.

given data is as follows :

infrared wave has wavelength = 0.000005 m

the scientific notation of the wavelength given is = 5.0 × 10⁻⁵ m

Thus, An infrared wave has a wavelength of 0.00005 m. this wavelength in scientific notation is 5.0 × 10⁻⁵.

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Answer:

Q1. B

Q2. D

Q3. C

Hope it helps............

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Answer: D) Sufficient kinetic energy

Explanation:

Answer:

Explanation:

When the gymnast is standing straight up, gravity acts on the gymnast but the gymnast is able to stay relatively stable.Tihis happens because her center of mass is directly above the beam which means that gravity is pushing her down onto the beam.