How many moles of oxygen gas are in a balloon containing 20.0 grams of pure oxygen gas?

Answers

Answer 1

In 20 grams of pure oxygen gas, there 0.5356 moles of oxygen gas

To calculate the number of moles of oxygen gas in a balloon containing 20.0 grams of pure oxygen gas, you can use the Ideal Gas Law equation [1]: PV = nRT.

Here, P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. Assuming the pressure and temperature are constant, we can solve for n:

n = PV / RT

Plugging in our values, we get:

n = (1.62 atm)(10.0 L) / (0.08206 Latm/molK)(295 K)

n = 0.5356 moles of oxygen gas

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Related Questions

calculate the number of grams of nan3 that must be used to generate the amount of n2 necessary to properly inflate the air bag

Answers

92.3g NaN3 number of grams of nan3 that must be used to generate the amount of n2 necessary to properly inflate the airbag

The reactant utilized to create the N2 (nitrogen) gas that inflates the airbag is NaN3. This process's (reaction's) relationship is based on a balanced equation. Additionally, the moles of the initial reactant, NaN3, determine the amount of N2 gas produced mathematically. As a result, start by writing the balancing equation.

2. Based on the mole ratio in the balanced equation, perform a dimensional analysis (mathematical conversion) from grams of NaN3 to grams of N2. The reactant (NaN3, 65.01 g/mol) and product (N2, 28.00 g/mol) molar masses (MW) will be involved.
the balanced equation is -> 2 NaN3 --> 3 N2 + 2 N

59.6g x (1mol N2 / 28.00g N2) x (2mol NaN3 / 3mol N2) x (65.01g NaN3 / 1mol NaN3) = 92.3g NaN3

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2. Sodium atom transfers an electron to chlorine atom to form a sodium chloride molecule.
How do these atoms combine?

Answers

Both the sodium cation and the chloride anion that are created when a particle donates a particle to a nucleophile have full valence shells and are thus more stable energetically.

What occurs when you consume too much sodium?

And when your body begins to dilute more sodium with water, it increases the volume of your blood and makes you retain fluid. Consequently, the excessive thirst, bloating, and increased blood pressure. Additionally, this process puts stress on your heart, blood vessels, and kidneys if you routinely consume too much salt.

What does food sodium mean?

Many foods include the mineral sodium. Your body requires salt to maintain healthy neuron and muscle function. The equilibrium of bodily fluids is also maintained. Almost all table salt

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Which of the substances have a standard enthalpy of formation (NHf∘) equal to zero?a. C (diamond).b.F2(g).c.NH3(g).d. Hg (l).

Answers

Standard enthalpy of production for an isotope in its mean position is 0 by definition. F2(g) F 2 (g) as well as Hg(l) H g (l) are in their fixed positions among the chemicals listed.

What is meant by enthalpy?

Enthalpy is a property or condition function that mimics energy; it has the same dimensions as power generation and is thus quantified in kilowatt hours or ergs. The value of hysteresis is solely dependent on the temperature. pressure, and makeup of the system, not on the history.

What is an illustration of enthalpy?

The total energy content of such a body the with constant is equal to this enthalpy. You must realize that while energy may take different forms, enthalpy rarely changes.

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water is added to 200 ml of a 2.0 m solution of cacl2 to increase the volume of the solution to 400 ml. what is the new concentration? select one: a. 4.0 m b. 3.0 m c. 1.0 m d. 2.0 m

Answers

The new concentration of the solution would be 1.0 m (C)

A solution's concentration can be lowered through a process known as dilution, which involves adding more solvent to the solution. This procedure maintains the solute concentration while increasing the overall volume of the solution, lowering the ultimate concentration. A solution having a higher concentration can be diluted by combining it with a solution with a lower concentration. Mathematical calculations can be used to determine how much solvent is required to create a new, diluted solution at the desired concentration. The following formula describes the connection:

M₁V₁ = M₂V₂

Where:

M₁ = the concentration of the original solution

V₁ = the volume of the original solution

M₂ = the concentration of the diluted solution

V₂ = the volume of the diluted solution

Thus, the new concentration would be

2.0 m × 200 mL = M₂ × 400 mL

M2 = (2.0 m x 200 mL) ÷ 400 mL

M2 = 1.0 m

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what are the intermolecular force(s) present in salt water that makes it a good idea for using it for extracting water from an organic solvent? group of answer choices

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Intermolecular interaction between being an ion and the terminal of such a polar molecule with the opposite charge known as an ion-dipole force. like sodium chloride(NaCl) in water. 3.

NaCl—is it salt?

Most people use the term "salt" to refer to sodium chloride, or table salt. Ionic bonds between sodium ions & chloride ions result in the formation of sodium chloride. The chemical formula for sodium chloride is NaCl because there is 1 sodium cation (Na+) per each chloride anion (Cl-).

NaCl is a sort of salt, right?

Sodium(1+) is the counterion in sodium chloride, an inorganic chloride salt.c. It is a salt of inorganic sodium and chloride.

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if you were to complete a mass balance on a coffee roaster, which of these would not be a material stream exiting out of the roaster? (A). Spent Coffee Grounds, (B) Chaff, (C) Roasted Coffee Beans, (D) Water Vapor, Carbon Dioxide and other VOCs

Answers

Due to the fact that used coffee grounds are a waste product and a remnant of the roasting process, they are not a material stream leaving the roaster.

What chemical processes take place when roasting coffee?

Maillard Response The Maillard reaction is crucial for the emergence of roasted coffee's flavour and colour. Carbonyl groups (from sugars) and amino groups in proteins interact at temperatures between 150 and 200 °C to create fragrance and flavour chemicals.

What steps are involved in roasting coffee?

The steps involved in roasting coffee are cleaning, roasting, cooling, grinding, and packing. A process flow diagram for a typical coffee roasting operation. Green coffee bean bags are opened by hand or mechanically, put into a hopper, and screened to remove the foreign object

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when all the electrons in an atom occupy the lowest possible energy states, the atom is said to be in its:

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when all the electrons in an atom occupy the lowest possible energy states, the atom is said to be in its Ground state.

A quantum mechanical system's ground state is its stationary, lowest energy state; this energy is often referred to as the system's zero-point energy. Any state that has more energy than the ground state is said to be excited. The ground state is frequently referred to as the vacuum state or the vacuum in quantum field theory.

They are referred to as degenerate if they have more than one ground state. There are degenerate ground states in many systems. Degeneracy arises whenever a unitary operator exists that interacts nontrivially with a ground state and commutes with the system's Hamiltonian.

The third law of thermodynamics states that a system is in its ground state at absolute zero degrees Celsius, and that ground state's degeneracy determines the system's entropy. At absolute zero, many systems, including a flawless crystal lattice, have a singular ground state and so have zero entropy. In systems that display negative temperature, it is also conceivable for the most excited state to have absolute zero temperature.

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What is the change in temperature if an object goes from 273 k to 243 k?

Answers

Since 273 k – 243 k equals 30, the temperature change for an object going from 273 k to 243 k is 30 k.

We use 273 in Kelvin because?

Colors and temperatures can both be measured in Kelvin: A temperature unit commonly used in science is the Kelvin scale. Lord Kelvin created the scale after realizing the need for one with absolute zero as the zero point, which translates to 0 K as the lowest attainable temperature, or -273,15 °C.

Can Kelvin scale be negative?

On the Kelvin scale, a body's temperature cannot be negative. Since the Kelvin scale's absolute zero represents the lowest temperature that may exist, it is impossible for it to be negative.

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when 0.551 g of sodium metal is added to an excess of hydrochloric acid, 5730 j of heat are produced. what is the enthalpy of the reaction as written?

Answers

The enthalpy of the reaction is 249.13 KJ when 0.551 g of sodium metal is added to an excess of hydrochloric acid and 5730 J of heat is produced.

According to the given question,

Weight of sodium metal = 0.551 g

We need to calculate the number of moles,

Using the formula of moles

Moles = given mass/molar mass

Moles = 0.551/23

Moles = 0.023

We need to calculate the energy in 1 mole

In 0.023 moles of sodium metal = 5730 J

In 1 mole of sodium metal = 5730/0.023

The energy in 1 mole of sodium is 249130.43 J

Hence, the enthalpy of the reaction is 249.13 KJ

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nitrogen and hydrogen are fed at 1:3 molar ratio to an ammonia synthesis reactor operating at 1440 r and 100 atm, where the following take place. 25% of the n2 fed is converted to ammonia and the reaction produces 1000 lbmol/h nh3. calculate thevolemtricgas feed rate to the reactor (ft^3/h) at the reactior temp and pressure

Answers

The volumetric gas feed rate to the reactor at a temperature of 600C and a reactor pressure of 100 atm is 202.52 ft³/h.

According to the stoichiometry of the given reaction,

N₂ + 3H₂ → 2NH₃

2 moles of ammonia are produced from one mole of nitrogen.

Given that the reactor produces 1000 1bmol/h of ammonia.

So, moles of nitrogen getting converted to the product = 1000/2 =500

Which is just 25 percent of the number of moles of N₂ fed into the reactor.

Thus, moles of nitrogen feed to the reactor per hour = x

25/100 x = 500

x =2000

Thus, 2000 moles of nitrogen are fed per hour to the reactor.

Moles of hydrogen added per hour to the reactor = 3 x 2000 = 6000 mol

Thus, the total number of moles of gases fed into the reactor per hour = (2000+6000) = 8000 mol per hour

Thus, the volumetric flow rate of the gas into the reactor can be calculated by using the ideal gas equation as

PV = nRT

V = nRT/P

V = (8000 mol/h)(0.0821 Latm/molK)(600 + 273)K/100 atm

V = 5733.864 L/h

1 m = 3.281 ft

Thus, 1m³= (3.281)³ At³ = 35.32 At³

Thus, 1 L = 35.32 x10⁻³ ft³

Thus, the volumetric flow rate in ft /h can be calculated as:

5733.864 L/h = 35.32 x 10⁻³ x 5733.864 ft³ /h

= 202.52 ft³/h

Your question is incomplete but most probably your full question was:

Nitrogen and Hydrogen are fed at a 1:3 molar ratio to an ammonia synthesis reactor operating at T = 600 C and P = 100 atm, where the following reaction takes place:

N2 + 3H2 -----> 2NH3

25% of the N2 fed is converted to ammonia and the reactor produces 1000 lbmol/hour of NH3. The reactor operates at steady state. Calculate the volumetric gas feed rate to the reactor(ft^3/hour), at the reactor temperature and pressure.

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what is a magnetic domain? group of answer choices clusters of atoms where every atom has an opposing magnetic field clusters of atoms with only north poles clusters of atoms with their magnetic fields aligned clusters of atoms with their magnetic fields not aligned

Answers

A magnetic domain is a cluster of atoms with their magnetic fields aligned.

What is alignment of magnetic fields?

The atoms all have the same magnetic orientation, and the overall field of the domain is greater than the individual fields of the atoms. This alignment of the magnetic fields is caused by the exchange of electrons between the atoms in the domain. The magnetic domains are important for the storage of information in magnetic recording media, as the magnetic domains can be manipulated to encode data.

Clusters of atoms with only north poles, or clusters of atoms with their magnetic fields not aligned, are not valid magnetic domains. This is because all atoms must have an opposing magnetic field in order to create an overall field that is greater than the individual fields of the atoms.

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How do phospholipids interact with water?

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Phospholipids spontaneously form bilayers in aqueous solutions because their fatty acid tails are not highly soluble in water and exposed polar head groups that are interact with water.

What draws phospholipids to water?

A glycerol molecule is linked to two hydrophobic fatty acid chains by a negatively charged phosphate group to create phospholipids (which is hydrophilic). Due to its negative charges, which easily communicate with polar water molecules, the hydrophilic portion of the phospholipid is attracted to water molecules.

What component of phospholipids is drawn to water?

A single phospholipid molecule has two consecutive chains of fatty acids that make up the lipid "tails" and a phosphate group, which would be referred to as the "head," on the other end. The negatively charged phosphate group makes the head polar and hydrophilic, or "water loving," in origin. As a consequence, the water is dragged to the phosphate heads.

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a closed system allows for the exchange of mass and not energy with the surroundings.A) TrueB) False

Answers

False. A closed system permits mass exchange with the environment but not energy.

What is mass defined simply?

The mass of a something is the total amount of stuff or materials that make it up. The kilogram, or kg, is the symbol for the measurement units. It's important to remember that mass is distinct from gravity. Mass never changes, whereas weight fluctuates as the center of gravity shifts.

We mass things because...

Knowing an object's mass is essential since it allows you to determine that however much power will be needed to move it. It is common practice to calculate the mass of an unspecified object using recognized units of weight such milligrams, grams, and kilograms. Anything with both mass and quantity is considered to be matter.

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after a precipitation reaction with 0.64m h2so4 was completed, you centrifuge the sample, dry and weigh it. the ppt is found to weigh 0.109 grams. based on this mass, what was the original concentration of the unknown pb(no3)2 solution in mol/l? answer to 3 sf.

Answers

The original concentration of the Pb(NO₃)₂ solution in mol/L would be 0.00036 moles / 0.64 L = 0.0000056 mol/L = 0.056 mM (rounded to 3 significant figures).

To determine the original concentration of the unknown Pb(NO₃)₂ solution, we need to perform a mass-to-moles conversion. The equation for the precipitation reaction between Pb(NO₃)₂ and H₂SO₄ is as follows:

Pb(NO₃)₂ + H₂SO₄ -> PbSO₄ + 2HNO₃

The molar mass of PbSO₄ is 303.2 g/mol. So, 0.109 g of PbSO₄ is equal to 0.109 g / 303.2 g/mol = 0.00036 moles of PbSO₄. Since the stoichiometry of the reaction is 1:1 between Pb(NO₃)₂ and PbSO₄, we can assume that the same number of moles of Pb(NO₃)₂ were present in the original solution. Therefore, the original concentration of the Pb(NO₃)₂ solution in mol/L would be 0.00036 moles / 0.64 L = 0.0000056 mol/L = 0.056 mM (rounded to 3 significant figures).

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When using the tare function on a balance, start by _____________ then, ______________ to cancel out that mass. finally, _____________ and record the mass of your sample.

Answers

When utilizing a balance's tare function, place the glassware on it first, then press the tare/zero button to remove that mass. Add your sample to the glassware, then measure the mass.

What does a balance's tare function do?

The tare feature's operation. The display of the balance is reset to zero by pressing tare. You shouldn't factor the weight of the container into a compound measurement. Place the container on the scale, wait for a steady reading, and then push the tare key to reset the display to zero to tare the container.

When should the balance be tare?

Use the Tare features if you need to subtract the weight of an item after you have placed it on the scale. Use the Tare function, for instance, if you're weighing ingredients and you need to subtract the weight of the bowl.

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the phosphate of the incoming ribonucleotide is added to the oxygen on which carbon

Answers

During RNA synthesis, the 3' hydroxyl (also called as the hydroxyl) of the preceding codon is modified by the phosphatase of an incoming sufficient to amount

What function do phosphates play in the body?

Phosphates are necessary for the generation of energy, the operation of muscles and nerves, and the growth of bones. For detecting the phosphate levels in malnourished individuals, ph tests are really quite helpful.

Why is phosphorus useful, and what is it?

Phosphate is a naturally occurring form of phosphorous, and makes up 25% of all the minerals necessary for plant growth and maintenance. Phosphorous is a common feature in many goods and is necessary for the production of all fertilizers.

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Which of the following reduces the number of protons in the nucleus of an atom by 2?

Alpha decay
Beta decay
Electron capture
Gamma emission

Answers

Alpha decay is the correct answer .

What is Proton ?

A proton is a subatomic particle that is found in the nucleus (center) of an atom. It is positively charged and has a mass of approximately 1 atomic mass unit. The number of protons in an atom's nucleus is called its atomic number, which determines the element the atom is. For example, all hydrogen atoms have one proton and all helium atoms have two protons. Protons are one of the building blocks of matter and are essential for the stability of atoms. They participate in a variety of chemical reactions, such as those that form molecules, and also play a crucial role in nuclear reactions, such as those that take place in the sun to produce energy.

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The Earth orbits the Sun at a speed of approximately 29.8 km/s.How far does the Earth travel in one day?

Answers

Answer:

When orbiting at a speed of approximately 30 km/s, our earth travels 2.6 million km (1.6 million miles) in a day.

Hope it helps!

Explanation:

a cylinder contains 18 moles of a monatomic ideal gas at a constant pressure of 160 kpa. (a) how much work does the gas do as it expands 3200 cm3, from 5400 cm3 to 8600 cm3? (b) if the gas expands by 3200 cm3 again, this time from 2200 cm3 to 5400 cm3, is the work done greater than, less than, or equal to the work found in part (a)? (c) calculate the work done as the gas expands from 2200 cm3 to 5400 cm3.

Answers

(a) The work done the gas do as it expands 3200 cm³, from 5400 cm³ to 8600 cm³ is

(b) The work done is same as the change in the volume is same.

(a) The pressure of the ideal gas, P = 160 kpa = 160 × 10³ pa

The expansion of the volume of gas, ΔV = 3200 cm³ = 3200 × 10⁻⁶ m³

The work done is as follows :

W = PΔV

W = 160 × 10³ × 3200 × 10⁻⁶

W = 5120 J

(b) The work done is same as the change in the volume is same.

W = 160 × 10³ × 3200 × 10⁻⁶

W = 5120 J

Therefore the work is same.

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A carbon skeleton is covalently bonded to both an amino_________.

Answers

A carbon skeleton is covalently bonded to both an amino groups and carboxyl group.

How are covalent bonds made?

A covalent bond occurs when two atoms interchange one or more pairs of electrons. The two atomic nuclei are mutually attracting these electrons to them. When the difference between the electronegativities of two atoms is too tiny for an electron transfer to actually happen to produce ions, a covalent bond is created.

What distinguishes an amino acid from a carboxyl acid?

The carboxyl group is generally deprotonated and has a negative charge, meanwhile the amino group typically has a positive charge and is protonated. The R group, a secondary atom or group of atoms connected to the central atom in every amino acid, that's what gives the amino acid its identity.

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a 25.0-ml sample of 0.10 m c2h5nh2 (ethylamine) is titrated with 0.15 m hcl. what is the ph of the solution after 9.00 ml of acid have been added to the amine? [kb(c2h5nh2)

Answers

Titration with 0.15 m hcl is performed on a 25.0-ml sample of 0.10 m c2h5nh2 (ethylamine). After adding 9.00 ml of acid to the amine, the solution's pH is 10.88.

In addition to being a solvent extractor and a dye intermediate, ethylamine is also useful for chemical synthesis, rubber and detergent stabilization, petroleum refining, and solvent extraction. Ethylamine | PubChem | C2H5NH2. It turns into a liquid that is miscible with almost all solvents when it condenses just below room temperature. Like other amines, it is a nucleophilic base. The chemical industry and organic synthesis frequently use ethylamine.

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was the gradual color change observed when the sodium thiosulfate (na2s2o3) crystal was added to the aqueous solution of ki/i2 in station c evidence of a chemical or physical change?

Answers

Based on the data and Florence's observations, Florence has observed a chemical change. 2Na2S2O3 + I2 ----> Na2S4O6 + 2NaI.

What changes chemically?

A chemical reactions is the transformation of one substance into another, the emergence of new compounds with distinct properties, or any combination of these.It happens when two substances mix to create a new material.

In science, what exactly is a chemical change?

A carrot being chopped up or ice dissolving into water are two examples of physical changes.Chemical transformations occur when two or more components are mixed to create a brand-new compound.You have such a new material after a chemical transformation.A chemical change might occur when burning paper or when baking a cake.

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a certain substance has a normal freezing point of and a molal freezing point depression constant . calculate the freezing point of a solution made of of urea dissolved in of . round your answer to significant digits.

Answers

A certain substance X has the normal freezing point of -10.1 °C and the molal freezing point depression constant Kf = 5.32 °C.kg. mol⁻¹. The freezing point of a solution is - 15.4 °C.

The Molal freezing point depression constant = 5.32 °C kg mol⁻¹

The Mass of urea (solute) = 29.82 g

The Mass of solvent = 500 g = 0.500 kg

The Molar mass of urea = 60.06 g/mole

The expression is as follows :

ΔT = i k m

T - Ts = i k × ( mass of urea / molar mass of urea × mass of solvent )

Where,

Ts = freezing point of solution

T = freezing point of solvent = -10.1 °C

i = 1 , Van't Hoff factor

k = freezing point constant = 5.32 °C kg mol⁻¹

T - Ts = i k × ( mass of urea / molar mass of urea × mass of solvent )

- 10.1 - Ts = 1 × 5.32 ( 29.82 / 60.06 × 0.500)

Ts = - 15.4 °C

This question is incomplete, the complete is :

A certain substance X has a normal freezing point of -10.1 °C and a molal freezing point depression constant Kf = 5.32 °C.kg. mol⁻¹. Calculate the freezing point of a solution made of 29.82 g of urea ((NH₂)₂CO) dissolved in 500 g .

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at standard conditions, the equilibrium lies toward products for a given biochemical reaction. what is known about the change in free energy?

Answers

The correct option is C. ΔG°is less than 0 is known about the change in free energy.

Gibb's unfastened power is known as unfastened power due to the fact Gibb's energy is effortlessly available every time. If required the reaction can get this electricity without having to paint for it. The trade-in Gibb's unfastened power is the sum of enthalpy and the made of temperature and entropy of the gadget.

Gibbs's unfastened strength is denoted via the symbol 'G'. Its price is usually expressed in Joules or Kilojoules. Gibbs's loose energy can be defined because of the most quantity of work that can be extracted from a closed system. In line with the legal guidelines of thermodynamics, unfastened power is the energy it truly is available to be used at a given time. The legal guidelines of physics, consequently, imply that it's impossible for the quantity of to be had the energy to be countless.

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Complete Question:

At standard conditions, the equilibrium lies toward products for a given biochemical reaction. what is known about the change in free energy?

Choose one:

A.ΔG°equals 0.

B.ΔG°is greater than 0.

C.ΔG°is less than 0.

D.ΔG°is are unknown.

beta-sheets are a type of secondary structure and are found in every protein. T/F

Answers

False. Beta-sheets are not present in every protein as a part of secondary structure.

Why are beta sheets used?

One of the most popular ways to create oligopeptide-based materials acting as model stem cell habitats is by sheet assembly. When hydrophobic and hydrophilic peptides side chains get positioned on different sides of such a peptide backbone, strands are formed.

What does a protein's beta sheet do?

Protein secondary structures include beta-pleated sheets of protein. It is made up of a number of different beta strands that are joined together by hydrogen bonds. A beta-strand polypeptide is made of three to 10 amino acids.