a 250 ml flask of hydrogen gas is collected at 763 mmHg and 35C by displacement of water from the flask. the vapor pressure of water at 35c is 42.2 mmhg. how many moles of hydrogen gas are in the flask? (think ideal gas law and dalton's law of partial pressure)

Based on the mole ratio, the maximum number of grams of NO that can be produced is 19.4 g.

The maximum number of grams of NO that can be produced is calculated from the equation of the reaction as follows:

Equation of the reaction: 4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O(l)

Mole ratio of NH₃ and O₂₂is 4 : 5

moles of NH₃ = 15.9 / 17.03

moles of NH₃ = 0.9336 moles

moles of O₂ = 25.9 / 32

moles of NH₃ = 0.809 moles

the limiting reactant is O₂

Mass of NO produced = 0.809 * 4/5 * 30

Mass of NO produced = 19.4 g

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Answer:

Explanation:

Lead nitrate can cause serious issues if it comes into contact with a person's eye. Lead nitrate is a toxic chemical that can cause irritation and damage to the eye if it comes into contact with the eye tissue. Symptoms of eye irritation or injury from lead nitrate may include redness, swelling, pain, and blurred vision. If left untreated, lead nitrate exposure to the eye can lead to serious eye damage, including corneal abrasions, conjunctivitis, and even vision loss.

If lead nitrate comes into contact with your eye, it is important to seek medical attention immediately. You should rinse your eye with plenty of water and seek medical attention as soon as possible. Your healthcare provider will be able to determine the extent of the injury and provide appropriate treatment. It is important to follow your healthcare provider's instructions carefully to prevent further injury to your eye.

Answer:

d

Explanation:

Explanation:

molar mass of tetranitrogen dicarbide S4N4= 4×32+4×14

128+56

184 g/mol

no.of moles =given mass/ molar mass

3400= given mass / 184

3400×184 =given mass.

625600 g

Answer:

1 - Gravitational.

2 - Normal

3 - Tension

4 - Frictional

5 - Centripetal

Explanation:

1. If you drop something, gravity pulls it down to the Earth, So falling towards the earth is gravity.

2. Pushing back on another object is normal, Newton's law: Every action has an equal and opposite reaction.

3. When two forces are pulled on opposite sides, the object must stretch which creates tension. Think of a rubber band. If it is pulled more than the object can stretch, it will tear. Tensile strength refers to how much pulling force an object can withstand before it tears.

4. When objects or molecules rub against other objects or molecules they create friction.

5. Last two options go together.

The point group of porphyrin is D4h, and the point group of H2TPP (dihydrogen tetraphenylporphyrin) is D2h.

What is porphyrin ?

Porphyrins are a group of organic compounds that have a characteristic heterocyclic macrocycle structure known as a porphyrin ring. The porphyrin ring is composed of four pyrrole subunits linked together by methine bridges. Porphyrins are widely distributed in nature, and they are essential components of many biological molecules, including hemoglobin, myoglobin, and chlorophyll.

In addition to their biological roles, porphyrins have important applications in materials science, catalysis, and medicine. For example, porphyrins can be used as photosensitizers in photodynamic therapy, a treatment for cancer and other diseases that involves the activation of light-sensitive drugs to destroy cancer cells. Porphyrins also have interesting optical and electronic properties that make them useful in the development of sensors, photovoltaic cells, and other electronic devices.

The point group of porphyrin is D4h, and the point group of H2TPP (dihydrogen tetraphenylporphyrin) is D2h.

Porphyrin has a fourfold rotation axis (C4), four twofold rotation axes (C2), two mirror planes (σh), and a center of inversion (i), resulting in the point group D4h.

H2TPP is a derivative of porphyrin, but it lacks one of the four phenyl groups. Therefore, it has only two perpendicular mirror planes (σh) and a C2 rotation axis, resulting in the point group D2h.

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Answer:

How the chemical reacts

Explanation:

Answer: Under what condition an object having density greater than water will float on water?

If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn't depend on the amount of substance.

Answer:

Substance C

Explanation:

Substance C would be the answer because Substance C has a lower attraction level. Because of this, it takes more energy to take out of in order to become a liquid.

Answer: 2.31 L

Explanation:

charles law  v2= V1 x T2/T1

temperature must be in Kelvin

V2=2.5 X 298.15 / 323.15 =2.31 L

The major organic product of this reaction is ethyl alcohol (2-propanol). The reaction is an S_N2 reaction, so the stereochemistry would be inversed from the starting material  Chloroethane + NaOH.

A reaction is the action of responding to a situation or an event. It can involve a physical response or an emotional response. It is a way of expressing our feelings, thoughts, or beliefs in response to a certain stimulus. A reaction can be immediate, such as a reflex, or it can be delayed, such as in forming an opinion or making a decision. Reactions can also be conscious or unconscious, intentional or unintentional. Reactions can be positive or negative, and can vary in intensity. Reactions can be instinctive, or can be a result of our experiences, values, beliefs, or knowledge.

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The molar volume and average molar volume of propane, butane, and methane at STP are 24.45 L/mol , 24.93 L/mol ; 28.02 L/mol , 24.93 L/mol and 22.41 L/mol , 24.93 L/mol respectively.

The molar volume of a gas is defined as the volume occupied by one mole of gas at standard temperature and pressure (STP), which is defined as 0°C and 1 atm.

The molar volume of a gas can be calculated using the ideal gas law,

PV = nRT,

where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature in kelvins.The molar volumes of propane, butane, and methane at STP can be calculated as follows:

Propane: C₃H₈

At STP (0°C and 1 atm), the molar volume of propane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 24.45 L/mol

Butane: C₄H₁₀

At STP (0°C and 1 atm), the molar volume of butane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 28.02 L/mol

Methane: CH₄

At STP (0°C and 1 atm), the molar volume of methane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 22.41 L/mol

The average molar volume is the sum of the molar volumes divided by the number of gases:

Average molar volume = (24.45 + 28.02 + 22.41) / 3

Average molar volume = 24.93 L/mol

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Answer:

D. Ultraviolet light should have a short wavelength, not a long wavelength.

Explanation:

just took the quiz on Ed

The mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

Electromagnetic spectrum is the arrangement of electromagnetic radiations in the order of increasing frequency or decreasing wavelength.

Examples electromagnetic radiations based on increasing wavelength  include;

Thus, the mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

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Answer:

A) 1.3 × 10⁻⁵ mol/L

Explanation:

Step 1: Write the balanced equation for the solution of AgCl

AgCl(s) ⇄ Ag⁺(aq) + Cl⁻(aq)

Step 2: Make an ICE Chart

        AgCl(s) ⇄ Ag⁺(aq) + Cl⁻(aq)

I                           0             0

C                        +S            +S

E                          S              S

If we replace the solubility (S) in the Ksp expression, we get,

Ksp = [Ag⁺] [Cl⁻] = S × S = S²

S = √Ksp = √1.8 × 10⁻¹⁰ = 1.3 × 10⁻⁵ mol/L

Answer:

5 km/h

Explanation:

divide the hours to the distance

The mean of the data set is approximately 4.0626, and the 90% confidence interval is [4.060925, 4.064275].

The sample mean (x) is calculated as follows:

x = (4.0620 + 4.0550 + 4.0650 + 4.0740 + 4.0550 + 4.0660) / 6

x ≈ 4.0626 (rounded to four decimal places)

The 90% confidence interval is calculated as follows;

Standard deviation (s):

(4.0620 - 4.0626)² = 0.00000036

(4.0550 - 4.0626)² = 0.00000576

(4.0650 - 4.0626)² = 0.00000006

(4.0740 - 4.0626)² = 0.00001328

(4.0550 - 4.0626)² = 0.00000576

(4.0660 - 4.0626)² = 0.00000012

average of the squared differences:

(0.00000036 + 0.00000576 + 0.00000006 + 0.00001328 + 0.00000576 + 0.00000012) / 6 ≈ 0.00000624

s = √(0.00000624)

s ≈ 0.002496

the standard error of the mean (SEM):

SEM = 0.002496 / √6

SEM ≈ 0.001018

For a 90% confidence interval, the z value is approximately 1.645.

ME = 1.645 * 0.001018 ≈ 0.001675

CI = x ± ME

CI = 4.0626 ± 0.001675

CI ≈ [4.060925, 4.064275]

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Answer:

Answer

Standard State Conditions are

- The standard state temperature is 25°C (298 K).

- The concentration of all solutions is 1 M (1 molar).

- All gases are at 1 atm pressure.

Therefore

- Solution at 1 atm - Not a standard state

- Liquid at 1 atm - Not a standard state

Explanation:

Compared to 2,3,4-trifluoropentane, the nonane's carbon chains are longer.

A substance's molar mass is defined as its molecular weight in grams. By adding the molar masses of a substance's constituent atoms, we may get the substance's molar mass. Then, to convert between mass and the quantity of moles of the material, we may utilize the computed molar mass.

Adding the atomic masses of a particular substance results in the calculation of molar mass. Below each element's symbol on the periodic table is a designation of the mass of that specific element. The molar mass is obtained by averaging the atomic masses obtained from the periodic table.

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Answer:

p2 = .75 atm

Explanation:

p1 v1  = p2 v2

5 * 1.5  = p2 10    

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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Answer:

Bro don't cheat in online exams bro

Answer:

There are ~1.03 x 10^23 hydrogen atoms in 5.23g of glucose

Explanation:

The molecular formula of glucose is C6H12O6. To determine the number of hydrogen atoms in 5.23g of glucose, we need to use the Avogadro's constant and the molar mass of glucose.

The molar mass of glucose is:

C: 6 x 12.01 g/mol = 72.06 g/mol

H: 12 x 1.01 g/mol = 12.12 g/mol

O: 6 x 16.00 g/mol = 96.00 g/mol

Total molar mass of glucose = 180.18 g/mol

Using the formula:

Number of moles = mass ÷ molar mass

Number of moles of glucose in 5.23g = 5.23 g ÷ 180.18 g/mol = 0.029 moles

Since there are 6 hydrogen atoms in one molecule of glucose, we can find the total number of hydrogen atoms in 5.23g of glucose by multiplying the number of moles of glucose by Avogadro's constant and by 6:

Number of hydrogen atoms = 0.029 moles x 6.022 x 10^23 atoms/mole x 6 atoms/molecule = 1.03 x 10^23 hydrogen atoms.

Therefore, there are approximately 1.03 x 10^23 hydrogen atoms in 5.23g of glucose.

Well, by definition,

molarity

=

moles of solute

volume of solution

The half reaction with a more positive standard reduction potential will proceed spontaneously in a redox reaction

The half reaction with a more positive standard reduction potential will undergo reduction when compared to the half reaction with a more negative standard reduction potential.

Oxidation-reduction reactions, often known as redox reactions, are a set of chemical reactions that involve electron transfer between reactants. In a redox reaction, one reactant is oxidized, losing electrons, while the other reactant is reduced, gaining electrons.

The oxidation half-reaction is the process of losing electrons and increasing the oxidation number, whereas the reduction half-reaction is the process of gaining electrons and decreasing the oxidation number. The total reaction is referred to as the redox reaction.

Half-reaction:Half-reaction refers to the two parts of an oxidation-reduction reaction that happen separately. A half-reaction must always be either an oxidation reaction or a reduction reaction. It also describes the movement of electrons and hydrogen ions in an equation.

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Answer: The physical properties are mass, weight, volume, and density.

Explanation:

Answer:

a) the maximum number of phases that can exist in equilibrium is \(c_{ind\) + 2

b) the number of independent components in this system are 6

Explanation:

We know that, The degree of freedom f for a system can be simply referred to as number of variables that must be defined to completely solve a system.

If degree of freedom is 0, then any problem is can be solved.

a) If a system has cind independent components, what is the maximum number of phases that can exist in equilibrium?

The degree of freedom for a system can be written as;

f = \(c_{ind\) - p + 2

where f is the degree of freedom

\(c_{ind\) is the number of independent component

so we solve for \(c_{ind\)

\(c_{ind\) = f + p - 2

we know that f can not be less than 0

Hence maximum possible face will be;

\(c_{ind\) = p - 2

p = \(c_{ind\) + 2

Therefore, the maximum number of phases that can exist in equilibrium is \(c_{ind\) + 2

b) A given system has eight liquid phases in equilibrium with each other. What must be true about the number of independent components in this system?

Number of phases in the system p = 8

p = \(c_{ind\) + 2

\(c_{ind\) = p - 2

we substitute

\(c_{ind\) = 8 - 2

\(c_{ind\) = 6

Therefore, the number of independent components in this system are 6

Answer: Heyaa! :)

Condensation is the process of water vapor turning back into liquid water!

Explanation:

Hopefully this helps you!

-Matthew ~

Answer:

a melting of lead Is the answer

It’s D bro bro

Plus u can look up the rocks one by one and just put creates crystals?

Answer:

ITS D

Explanation:

DID THE USATESTPREP

Answer: 35℃

Explanation: A gas exerts pressure, the force of the gas particles striking the walls of its container. Gas pressure is measured in units such as torr, mmHg, atm, and Pa.