At a festival, spherical balloons with a radius of 140cm are to be inflated with hot air and released. The air at the festival will have a temperature of 25 C and must be heated to100 C to make the balloons float. 1. 00kg of butane(C4H10) fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air

You omitted what it was raised to the power in 1.3 x 10's gallons of water,  so i will put it up as   1.3 x 10^15 gallons of water and solve with it

Answer:1,083,333 days

Explanation:

Total amount of water held by lake Michigan= 1.3 x 10^15 gallons of water

Amount of water Chicago uses per day =Chicago uses 1.2 x 10^9 gallons of water /day

Therefore,

Number of days water would last if it doesnt rain =  Total gallons provided by lake Michigan/ Total gallons consumed per day

=1.3 x 10^15 gallons of water/ 1.2 x 10^9 gallons of water /day

= 1,083,333 days

Answer:

To separate the components, a water wash may be attempted to remove benzoic acid, but benzoic acid is not particularly water-soluble due to its nonpolar aromatic ring, and only small amounts would be extracted into the aqueous layer

The method that can be used to separate Benzoic acid and potassium carbonate is :  The application of water wash separation method

Benzoic acid is slightly soluble in cold water but becomes more soluble as the temperature of water is increased. Water wash separation method is a methodology used for the selective removal of unwanted compounds in a mixture.

The separation of benzoic acid and potassium carbonate is based on the solubility differences between Benzoic acid and potassium carbonate when dissolved in a solvent ( water ) therefore the water wash separation method is the most effective method.

Hence we can conclude that The method that can be used to separate Benzoic acid and potassium carbonate is :  The application of water wash separation method.

Learn more about separation methods :  https://brainly.com/question/735172

Answer: Filtration technique

Explanation:

The technique used here is called filtration.

Filtration,is a physical separation process that separates a mixture of an insoluble solid from a liquid ( acting as the solvent) by the use of a filter barrier that allows only the fluid to pass through.

In the case from the question,

As water is poured over the ground coffee, it forms a mixture of which the insoluble solid is the coffee grounds, the water is the liquid  and the filter barrier is the piece of paper  which allows only the brown  liquid coffee to pass through as the filtrate.

Answer:

sodium hydroxide

Explanation:

i think sodium hydroxide

The retention factor for the yellow spot is 0.2586.

Rf = Distance traveled with the aid of the compound / Distance traveled by the solvent the front

Rf = 1.5 cm / 5.8 cm = 0.2586

Retention factor (Rf) is a term used in chromatography, a laboratory technique used to separate and analyze mixtures of compounds. Rf is a dimensionless quantity that describes the migration of a particular compound relative to the solvent front in a chromatographic system.

In a typical chromatographic separation, the sample mixture is placed on a stationary phase, which is usually a solid or liquid that is immobilized on a solid support. The stationary phase is then contacted with a mobile phase, which is a liquid or a gas that flows over the stationary phase, carrying the sample compounds with it. The Rf value for a given compound is determined by dividing the distance the compound travels up the stationary phase by the distance the solvent front travels up the same phase.

To learn more about Retention factor visit here:

brainly.com/question/30914718

#SPJ4

The mass of one mole of phosphorus-32 is approximately 31.97 g/mol.

To learn more about phosphorus-32  from the given link:-

https://brainly.com/question/21850050

#SPJ1

When hexan-1-ol is treated with conc. H₂SO₄ at moderate temperatures, Di-n-hexyl ether is formed via SN₂ mechanism.

SN₂ Mechanism is mechanism involving the factors of steric hindrance following the order of 1° > 2° > 3°. It is a Nucleophilic substitution reaction.

Williamson Ether Synthesis is the synthesis of ether through SN₂ mechanism in which an ether is treated with conc. H₂SO₄ at moderate temperature.

When hexan-1-ol is treated with conc. H₂SO₄ at moderate temperatures, Di-n-hexyl ether is formed as below:

CH₃CH₂CH₂CH₂CH₂CH₂OH +Conc. H₂SO₄-->(CH₃CH₂CH₂CH₂CH₂CH₂)₂0

Hexan-1-ol                                                                 Di-n-hexyl ether

Williamson Ether Synthesis is a reaction involving a alcohol that is deprotonated to form an ether.

Learn more about Williamson Ether Synthesis here, https://brainly.com/question/2622808

#SPJ4

A solid that forms and settles out of a liquid mixture is called a precipitate.

The process of changing a dissolved component into an insoluble solid from a super-saturated solution is referred to as precipitation. This process takes place in an aqueous solution. The name given to the solid that forms is precipitate. In the event that an inorganic chemical reaction results in precipitation, the chemical reagent that is responsible for the formation of the solid is referred to as the precipitant. To precipitate in chemistry means to generate an insoluble compound, which can occur either through the reaction of two salts or through a change in temperature that affects the solubility of the compound.

To learn more about precipitate, click here:

https://brainly.com/question/24846690

#SPJ4

Answer:

Valence electrons are outer shell electrons with an atom and can participate in the formation of chemical bonds. In single covalent bonds, typically both atoms in the bond contribute one valence electron in order to form a shared pair. The ground state of an atom is the lowest energy state of the atom.

Explanation:

Cr=35.880/51=0.73≈0.7

P=21.076/31=0.67≈0.7

O=43.543/16=2.71

Divide each by 0.7 u get

Cr=1 ,P =1, O=4

Empirical formula is CrPO4

\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

Here we go ~

Mass of 1 mole C - 12 atom = 12 g

So, mass of 1 carbon - 12 atom = ( 12 / 1 mole ) g

that is :

\(\qquad \sf  \dashrightarrow \: \cfrac{12}{6.022 \times 10 {}^{23} } \: \: g\)

[ since 1 mole = 6.022 × 10²³ ]

\( \qquad \sf  \approx2 \times 10 {}^{ - 23} \: \: g\)

Molarity :

Molarity is defined as " The number of moles of solute present in per litre of solution "

Molality :

Molality is defined as " Number of moles of solute present per kg mass of solvent "

As per the given reaction ~

\(\qquad \sf  \dashrightarrow \: Zn + 2\:H Cl \rightarrow ZnCl_2 + H_2\)

32.65 g of zinc reacted,

[ Number of moles of zinc reacted = mass of zinc reacted divided by its formula Weight ]

\(\qquad \sf  \dashrightarrow \: number \: \: of \: \: moles = \cfrac{32.65}{65.3} \: \: mol\)

\(\qquad \sf  \dashrightarrow \: number \: \: of \: \: moles = \cfrac{1}{2} \: \: mol\)

so, we can say that " half mole Zinc reacted with 1 mole of HCl to form half mole of Zinc chloride and half mole of Hydrogen gas "

And we already know that 1 mole of any gas occupies 22.7 litre volume at STP.

So, volume of Hydrogen gas Liberated :

\(\qquad \sf  \dashrightarrow \: \cfrac{1}{2} \times 22.7\)

\(\qquad \sf  \dashrightarrow \: 11.35 \: \: litres\)

The relationship between Molarity and molality can be expressed as :

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000(m \times d)}{1000+(m \times F)}\)

Terms :

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000(3 \times 1.110)}{1000+(3 \times 40)}\)

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000( 3.330)}{1000+120}\)

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 3330}{1120}\)

\(\qquad \sf  \dashrightarrow \: M =2.973 \: mol \: l {}^{ - 1} \)

Answer:

C- the breakdown of rock into sediment

Explanation:

Because sedimentary rocks have layers and are made of of those layers which are made up of the breakdown of rock into sediment.

hope this helps:)

Changing the configuration of C₃ (carbon 3) in glucose results in the formation of an epimer. Glucose is a six-carbon sugar molecule with a linear chain structure. At carbon 3, there is a hydroxyl group (-OH) attached. The configuration at this carbon can be either in the alpha (α) or beta (β) form.

When the configuration at C₃ is changed, it means that the orientation of the hydroxyl group is switched. In the alpha form, the hydroxyl group is positioned below the plane of the glucose molecule, while in the beta form, it is positioned above the plane.

This change in configuration at C₃ leads to the formation of an epimer. An epimer is a type of stereoisomer that differs in configuration at only one chiral carbon, in this case, C₃. The rest of the molecule remains the same.

The interconversion between the alpha and beta forms of glucose is facilitated by the open-chain structure of glucose, which can undergo mutarotation. This process allows for the rapid interconversion between the two forms in solution.

The distinction between the alpha and beta forms of glucose, as well as their interconversion, is significant in understanding the properties and biological functions of glucose, particularly in relation to its involvement in carbohydrate metabolism and the formation of glycosidic bonds in polysaccharides.

To know more about mutarotation, refer to the link below:

https://brainly.com/question/13265198#

#SPJ11

Answer:

Explanation:

206 kl.

The atomic number of an element represents the number of protons in the nucleus. In this case, the atomic number is 6. Therefore, there are 6 protons in the nucleus of this element. The correct answer is B. 6.

The atomic number of an element represents the number of protons in the nucleus. In this case, the atomic number is 6, which means there are 6 protons in the nucleus. The atomic mass is the sum of the number of protons and neutrons in the nucleus. Since the atomic mass is 12.01 and the atomic number is 6, we can subtract 6 from 12.01 to get the number of neutrons. This gives us a neutron count of approximately 6.01.

Therefore, The answer is B. 6 protons are in the nucleus of this element.

Learn More about nucleus here :-

https://brainly.com/question/21083478

#SPJ11

Answer:b

Explanation:

Both devices work because of electromagnetic induction, which is when a voltage is induced by a changing magnetic field.

Answer:

A

and B

Explanation: hope this helps, pls mark brainliest.

A homogenous mixture of one or more solutes that have been dissolved in a solvent is known as a solution. Keep in mind that the substance that is present in the highest amount is the solvent.

In a homogenous mixture, what is the solution?

Solutions are homogenous solutions made up of at least two different compounds, referred to as the solute and solvent. The thing that dissolves is called the solute. The emulsifying agent is the solvent. It is impossible to tell the difference between the solvent and the solute when looking at a solution. A solution is a specific kind of homogenous mixture made up of two or more different substances. A mixed type with a homogeneous composition is called a homogeneous mixture. This indicates that it is difficult to separate the chemicals from one another.

The composition and features of homogeneous solutions are constant. Several examples include a cup of coffee, fragrance, cough syrup, a saltwater or sugar water solution, etc.

To learn more about  homogeneous mixture refers to:

brainly.com/question/16938448

#SPJ4

Answer:

The alkali metals/group 1 are recognized as a group and family of elements. These elements are metals. Sodium and potassium are examples of elements in this family. Hydrogen is not considered an alkali metal because the gas does not exhibit the typical properties of the group. The largest family of elements consists of transition metals/group 3-12/group 3a. The center of the periodic table contains the transition metals, plus the two rows below the body of the table (lanthanides and actinides) are special transition metals. Even though both are metals, transition metals have higher melting points; they have higher density; they are less reactive with water; they react and form ions with different charges, but Group 1 metals only form 1+ ions. (Hope the is helpful! You can reword it if you want...)

The molarity of the stock solution of luminol when 14.0 g of luminol was added to a total volume of 75.0 mL of H2O was 0.292 M.

What is luminol?

Luminol is a chemical that is used by forensic technicians to detect the presence of blood at crime scenes. When blood is present, the iron found in hemoglobin reacts with luminol to emit light. This light can then be used to identify where blood is located.

How do I calculate molarity?

Molarity is a measure of concentration that relates the number of moles of solute to the volume of the solution in liters. The formula to calculate molarity is as follows:

Molarity = moles of solute / liters of solution

In order to calculate the molarity of the stock solution of luminol, we need to determine the number of moles of luminol present in the solution.

To do this, we need to first convert the mass of luminol into moles by using the molar mass of luminol.

Molar mass of luminol (C8H7N3O2) = (8 x 12.01 g/mol) + (7 x 1.01 g/mol) + (3 x 14.01 g/mol) + (2 x 16.00 g/mol)

= 177.19 g/mol14.0 g luminol x (1 mol / 177.19 g)

= 0.079 moles luminol

Now that we know the number of moles of luminol present in the solution, we can use the formula for molarity to calculate the molarity of the stock solution:

Molarity = moles of solute / liters of solution

Molarity = 0.079 moles / 0.075 liters

= 1.05 M (rounded to two significant figures)

Therefore, the molarity of the stock solution of luminol is 0.292 M.

To know more about luminol visit :

https://brainly.com/question/20630621

#SPJ11

Answer:

Absorbance increases.

Explanation:

Recall that absorbance is directly proportional to concentration as illustrated by Beer's Law:

\(\displaystyle A = \epsilon bC\)

Where A is the absorbance and C is the concentration of the solution.

Therefore, as the concentration of a solution increases, the amount of light absorbed (absorbance) likewise increases.

Answer:

42.2075 grams

Explanation:

Answer:

A

Explanation:

Your answer would be A because Earth is formed from cold gases collapsing due to gravity. The Solar System was formed when a huge amount of dust and gas began to collapse under its own gravity, and as the cloud collapse it started to spin causing the material within the cloud to gather into a swirl and then formed into planets and as the planets are formed they kept this spinning motion.

Answer:

The average atomic mass of zinc is 65.38 u.

Explanation:

Hope this helps.

Give brainliest please!

There are three ways nitrogen can be fixed to be useful for living things: Biologically: Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants.

Hope this helps!

Answer:

Many human activities have a significant impact on the nitrogen cycle. Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem.

Explanation:

Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria.

A second source of variation in a population is genetic recombination through sexual reproduction. During meiosis, homologous chromosomes exchange genetic material through crossing-over, leading to new combinations of alleles in the offspring.

Additionally, independent assortment of chromosomes during meiosis leads to different combinations of alleles being inherited together. These processes can result in new combinations of traits in the offspring, leading to genetic diversity within a population.

This diversity is essential for adaptation to changing environmental conditions, as some individuals may possess traits that allow them to survive and reproduce more successfully than others. Over time, natural selection acts on this variation, leading to the evolution of new species.

Genetic recombination is a process that occurs during sexual reproduction, in which genetic material from two parents is combined to form a unique offspring. This process generates genetic diversity within a population, allowing for the development of different traits and adaptations.

Learn more about meiosis here:

https://brainly.com/question/29383386

#SPJ4

Considering the Dalton's partial pressure, the partial pressure of nitrogen and oxygen is 3.634 atm and 0.966 atm  respectively.

The pressure exerted by a particular gas in a mixture is known as its partial pressure.

So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

\(P_{T} =P_{1} +P_{2} +...+P_{n}\)

where n is the amount of gases.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture.

The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present:

\(x_{A} =\frac{n_{A} }{n_{total} }\)

So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

\(P_{A} =x_{A} P_{T}\)

In this case, the mixture contains 5.4 mol of nitrogen and 1.4 mol of oxygen. So, the total number of moles of all the components present is 5.4 moles + 1.4 moles=  6.8 moles.

Then, the mole fraction of each gas can be calculated as:

So, being 4.6 atm the total pressure of the gas mixture, the partial pressure of each gas can be calculated as:

\(P_{nitrogen} =x_{nitrogen} P_{T}\)= 0.79× 4.6 atm= 3.634 atm

\(P_{oxygen} =x_{oxygen} P_{T}\)= 0.21× 4.6 atm= 0.966 atm

In summary, the partial pressure of nitrogen and oxygen is 3.634 atm and 0.966 atm  respectively.

Learn more:  

Answer:

it will be nitrogen and oxygen

Explanation:

doing the assignment

Answer:

the throwing back by a body or surface of light, heat, or sound without absorbing it.

Explanation:

Answer:

Explanation:

The question requires us to determine a proper equation to calculate the enthalpy change for the following reaction:

Considering the generic reactions and their associated enthalpy change given:

According to Hess' Law, enthalpy is a function of state, which means it does not depend on the path by which reactants are converted to products. Using this definition, we can rearrange the reactions 1 and 2 given (and apply all the changes required to their associated enthalpy change) in order to obtain the required reaction, and then calculate the enthalpy change of the final reaction considering the rearranged enthalpies of reactions 1 and 2.

Our final objective is to obtain a chemical equation that presents 1 mol of reactants A and B on the left side, and 1 mol of product C on the right side.

First, let's guarantee that we will have product C by multiplying reaction 2 by -1:

Next, we need to make sure that