If the volume of a spherical ball is 113.04 cubic inches, what is the radius?
3 inches
9 inches
18 inches
27 inches

Answer:

solidification

Explanation:

As a result, the container's partial pressure of Hydogen is 163.2 torr.

The partial pressures of the individual gases make up the total pressure of the gas combination. The total number of moles in the gas mixture, or ntot, is equal to the sum of all ni. Ptot = Pi = P1 + P2 + P3...

Calculating the total moles of gas in the container is the first step.

n(total) = n(H2) + n(O2) + n(SO2)

= 0.40 mol + 0.80 mol + 0.80 mol

= 2.0 mol

Next, we need to use the mole fraction of H2 to calculate its partial pressure:

X(H2) = n(H2) / n(total)

= 0.40 mol / 2.0 mol

= 0.20

The mole fraction of H2 is 0.20, so we can use this to find the partial pressure of H2:

P(H2) = X(H2) x P(total)

= 0.20 x 816 torr

= 163.2 torr.

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Answer:

The percentage relative abundance of Cu-63 is 69.5% and that of Cu-65 is 30.5%

Explanation:

The mass of Cu-63 is 62.9396 amu

The mass of Cu-65 is 64.9278 amu

Relative abundance of each isotope ?

The average atomic mass of Copper is; 63.546 u

The relationship between abundance, mass of isotopes and average atomic mass is;

(M1)(x) + (M2)(1-x) = M(E)

Where;

M1 = Mass of first isotope

x = Abundance of first isotope

M2 = Mass of second isotope

M(E) = Average atomic mass

Inserting the vaues, we have;

62.9396 (x) + 64.9278 (1-x) = 63.546

62.9396x - 64.9278x + 64.9278 = 63.546

- 1.9882x = 63.546 - 64.9278

- 1.9882x  = - 1,3818

x = 0.695 or 69.5%

The percentage relative abundance of Cu-63 is 69.5% and that of Cu-65 is 30.5%

The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.

Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.

Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.

It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.

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Answer:

Lipids

Explanation:

Lipids are a class of macromolecules that are nonpolar and hydrophobic in nature. Major types include fats and oils, waxes, phospholipids, and steroids.

Hope this helps!

The empirical formula of polyethylene can be determined by converting the given percentages of carbon (C) and hydrogen (H) into grams. To find the grams of each element, we assume a 100.0 g sample of polyethylene.

For carbon:

Mass of carbon = 86.0% × 100.0 g = 86.0 g

For hydrogen:

Mass of hydrogen = 14.0% × 100.0 g = 14.0 g

Therefore, in a 100.0 g sample of polyethylene, there are 86.0 grams of carbon and 14.0 grams of hydrogen.

The empirical formula of a compound represents the simplest whole-number ratio of atoms present in the compound. To determine the empirical formula, we need to find the ratio of carbon to hydrogen in terms of moles.

First, we convert the masses of carbon and hydrogen into moles using their respective molar masses. The molar mass of carbon is approximately 12.01 g/mol, and the molar mass of hydrogen is approximately 1.008 g/mol.

Number of moles of carbon = 86.0 g / 12.01 g/mol ≈ 7.162 mol

Number of moles of hydrogen = 14.0 g / 1.008 g/mol ≈ 13.89 mol

Next, we divide the number of moles of each element by the smallest number of moles to get a simplified ratio.

Carbon: Hydrogen ≈ 7.162 mol : 13.89 mol ≈ 1 : 1.939

Since we want to express the ratio in whole numbers, we multiply both sides by 2 to get a whole number ratio.

Carbon: Hydrogen ≈ 2 : 3.878

Rounding to the nearest whole number, we find that the empirical formula of polyethylene is CH₂.

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Answer:

considered as element

Helium He

Answer:

The answer to this reaction would be C-C-OH + H2.

The jumbled word "gzeysktqix" can be unscrambled to form the word "skyzigtext."

Here are possible words that can be made from this jumbled word:

Sky: Referring to the atmosphere above the Earth.

Zig: Describing a series of sharp turns or angles.

Text: Referring to written or printed words.

Six: The number following five and preceding seven.

It seems that the jumbled word has provided a mix of letters that can be rearranged to form these words. This exercise is likely intended to enhance the student's vocabulary skills, spelling ability, and problem-solving skills. By unscrambling the letters, the student is encouraged to explore different word possibilities and apply their knowledge of language. It also promotes critical thinking and creativity as they find valid words from the given set of letters.

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Answer:

CH3CH2OH

Explanation:

CH3CH2OH the ethanol is regarded as neutral since pH is very close to 7 and CH3CHO or acetaldehyde is an extremely weak basic max pH of 8.

Answer:

A sharp knife cut objects better because due to its very thin edge, the force of our hand falls over a very small area of the object producing a large pressure and this large pressure cuts the object easily.

Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\)

How many peaks do \(Cl_{2}\)'s molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\).

How many peaks do 's molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Considering the definition of equilibrium constant, the equilibrium molar the symbolic expression for the equilibrium constant is  (\([CO_{2} ]^{4}\)×\([H_{2} O]^{6}\))÷ (\([C_{2}H_{6} ]^{2}\)×\([O_{2} ]^{7}\))

Equilibrium is a state of a reactant system in which no changes are observed as time passes, despite the fact that the substances present continue to react with each other.

The concentration of reactants and products at equilibrium is related by the equilibrium constant Kc. Its value in a chemical reaction depends on the temperature and the expression of a reaction aA + bB ⇄ cC + dD is

Kc= (\([C]^{c}\)×\([D]^{d}\))÷ (\([A]^{a}\)×\([B]^{b}\))

That is, the constant Kc is equal to the multiplication of the concentrations of the products raised to their stoichiometric coefficients by the multiplication of the concentrations of the reactants also raised to their stoichiometric coefficients.

The balanced reaction is:

2 C₂H₆(g) + 7 O₂(g) ⇆ 4 CO₂(g) + 6 H₂O(g)

The constant Kc can be expressed as:

Kc= (\([CO_{2} ]^{4}\)×\([H_{2} O]^{6}\))÷ (\([C_{2}H_{6} ]^{2}\)×\([O_{2} ]^{7}\))

Finally, the equilibrium molar concentration is  (\([CO_{2} ]^{4}\)×\([H_{2} O]^{6}\))÷ (\([C_{2}H_{6} ]^{2}\)×\([O_{2} ]^{7}\))

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Considering the definition of molar mass, the correct answer is option c): the mass of 1.85 moles H₂O₂ is 62.9 grams.

The molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.

The molar mass of a compound is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound H₂O₂ is calculated as:

H₂O₂= 2× 1 g/mole + 2× 16 g/mole

Solving:

H₂O₂= 34 g/mole

You can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 34 grams, 1.85 moles of the compound contains how much mass?

mass= (1.85 moles× 34 grams)÷ 1 mole

mass= 62.9 grams

Finally, the mass of 1.85 moles H₂O₂ is 62.9 grams.

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Answer:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Explanation:

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Answer:

4^4, or 256

Explanation:

When dividing numbers with exponents and the same base, you will subtract from the exponents and keep the base the same.

Answer:

what does that supposed to mean?

At a particular temperature, H2(g)+I2(g)2HI(g) equals 64. H2 and HI have heterogenous equilibrium concentrations of 2 and 16 mollit-1, respectively.

Second order in NO and first order in O2 is the reaction 2NO(g) + O2(g) 2NO2(g). The observed rate of the reaction at [NO] = 0.8 M and [O2] = 3.7 M is 0.00022022 M/s.

The concentration of the reactants is high at equilibrium if Keq is a small number (Keq1). In this instance, the reaction is in favor of reactants forming. According to Keq 1, the reactants and products are present in significant quantities.

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Answer

The mass of the gas released from the vessel if the pressure remains constant is 7.6 grams

Explanation

Given:

A gas weighing 12.5g is contained in a constant volume vessel at 21°C at constant pressure.

The temperature is now increased to 210°C.

What to find:

The mass of the gas released from the vessel if the pressure remains constant.

So, from Ideal gas law;

PV = nRT

where P = pressure, V = Volume, n = no. of moles, R = Ideal gas constant and T = temperature

Note that the volume and pressure inside the vessel remain constant in both cases.

Initial Condition:

Mass of the gas, m₁ = 12.5 g

The temperature of the vessel, T₁ = 21°C = 21 + 273 K = 294 K.

So using the Ideal Gas Law, we get

Final Condition:

Let the mass of the released gas be m₂

The temperature of the vessel, T₂ = 210°C = 210 + 273 K = 483 K.

So using the Ideal Gas Law, we get:

To get the mass of the released gas, m₂, compare (i) and (ii)

The grams of gas that must be released is 7.6 grams.

Answer:

55.18 L

Explanation:

First we convert 113.4 g of NO₂ into moles, using its molar mass:

Then we use the PV=nRT formula, where:

Input the data:

And solve for V:

Answer:

The atomic size decreases with an increase in atomic number when we move from left to right.

Explanation: Hope it helps you:))))))

                      Have a great day.

Answer:

Option b is show the chemical property of sodium....

Dissolve 60g of potassium bromide in 340g of water to produce 15% (mass/mass) aqueous solution of potassium bromide.

Here we have to prepare a total of 400 g of solution. Aqueous solution means the solvent we use here is water.

So to prepare 400 g of 15% aqueous solution of potassium bromide, we need to find out how many grams of potassium bromide need to be dissolved in water and how many grams of water must be used.

Here the weight percent is given, that is 15%

       15/100 = weight of potassium bromide/ 400 g

       0 .15      = weight of potassium bromide / 400

      weight of potassium bromide needed = 0.15 × 400

                                                                       =  60 g

So, we calculated the required amount of potassium bromide as 60 grams. The total weight of the solution to be made is 400 grams.

So amount of water required = 400 - 60

                                                =  340 g

So we need to mix 60 grams of potassium bromide in 340 grams of water to get a 15% (mass/mass) aqueous solution.

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Answer:

High concentration of ions means that the solution is very acidic. These types of solutions have a pH < 7.0, so a very low pH.

Therefore, the answer that most closely matches the criteria would be 2.

When 7.524 is rounded to 3 significant figures, it will be 7.52.

The process of changing a number to a nearby number with fewer significant digits is known as rounding.

Rounding can be done to the nearest integer, the nearest tenth, the nearest hundredth, and so on.

Here are some pointers on rounding numbers to a certain number of significant digits:If the digit following the last significant digit is less than 5, simply drop it and all following digits.

(round down)For example, 2.832 rounded to two significant digits is 2.8 since the 3 is followed by a 2 which is less than 5.

If the digit following the last significant digit is greater than 5, add 1 to the last significant digit, then drop all of the digits that follow it.

(round up)For example, 4.673 rounded to two significant digits is 4.7 since the 3 is followed by a 7 which is greater than 5.

If the digit following the last significant digit is exactly 5, the preceding digit is odd, and no other digits follow, increase the last significant digit by 1.

If the digit following the last significant digit is exactly 5, the preceding digit is even, and no other digits follow, simply leave the last significant digit alone.

For example, 2.875 rounded to two significant digits is 2.9 since the 5 is followed by an odd number, which means that the 8 should be rounded up, while 2.765 rounded to two significant digits is 2.8 since the 5 is followed by an even number, which means that the 6 should be left alone.

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The Electronegativity Difference between the C and H atoms in ethane would be 0.35.

The structure of ethane is as follows:A) Electronegativity of Carbon (C) is 2.55, and Hydrogen (H) is 2.20.  Electronegativity Difference (ΔEN) = 2.55 - 2.20 = 0.35B) There would be a partial negative charge on the Carbon atom, and there would be a partial positive charge on the Hydrogen atoms.C) The ethane molecule is less polar than water. This is because the electronegativity difference between the Carbon and Hydrogen atoms is low (0.35) in ethane, whereas the difference between the Oxygen and Hydrogen atoms is high (1.4) in water. Due to the high electronegativity difference in water, it creates a dipole moment, making it a polar molecule. Whereas ethane has no dipole moment and is considered a nonpolar molecule.D) If the oceans were filled with ethane instead of water, then there would be no hydrogen bonding. As a result, many of the physical properties of the ocean would be different.

For example, the freezing point of the ocean would be much lower because of the weak intermolecular forces between ethane molecules. Due to the absence of hydrogen bonding, the viscosity of the oceans would be less than that of water, leading to easier movement of organisms.

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Step 1 - Understanding the types of heat transfer

There are three types of heat transfer: conduction, convection and irradiation. Let's see how each one works:

a) Conduction: is when a very hot substance enters in contact with a cooler substance. The atoms in the hotter substance are moving with a greater velocity and will therefore collide with the atoms of the cooler substance.

b) Convection: it happens especially in liquids and air (fluids). The liquid is warmed up at the bottom first, via conduction. The heated bottom thus changes its density: it becomes less dense, and go up. This process repeats itself several times, warming the whole liquid.

c) Irradiation: when something is put near a heat source, but do not touch it directly. In this case, there's no direct atom collision, but indirect: the rapid atoms of the heat source collide with atoms in the air which then collide with the atoms in the object that is being heated.

Step 2 - Discovering the type of heat transfer in each scenario

In the first scenario, the water at the bottom is in direct contact with the pan. Therefore, water molecules will directly collide with "pan" molecules (probably aluminum atoms or other materials). But there's also convection. The water is not heated only by conduction.

In the second scenario, the hands are near the Bunsen burner, but not directly touching it. What is happening here is then heat irradiation, not conduction.

In the third scenario, the hand is touching the object (the handle of the pan). Even though handles are made of material that poorly conduct heat, it will increase its temperature, at least a little bit. When we touch it, we can feel it is hotter than before. In this case, only conduction is involved (from the handle to our hand). In this case atoms are directly colliding and this is the only source of heat.

Finally, in the last scenario, we also have a case of irradiation: the pan with water is near the heat source, but not directly touching it.

Step 3 - How to set an experiment

In science in general, anytime we want to investigate some effect it is good manners to investigate a system controling all other effects. We want to investigate a variable at a time.

Therefore, while both scenario 1 and 3 involve conduction, scenario 1 also involves convection, which could be a problem to a experiment intending to study conduction only.

The best experiment would be then scenario 3, hands touchind the handle of pan siting in a Bunsen burner.