A recipe calls for 172 cups of flour to make 5 cakes. How many cups of flour would it take to make 1 cake, written as an improper fraction (fraction greater than one)?.

0.375 L volume of gas are produced if 1.00 g. of nahco3 decomposes at 29 degrees c and 769 torr

moles=0.011

p=769 torr

v=?

temperature=302K

PV=nRT

V=nRT/P

V=0.11×8.3×302÷769

V=0.375 L

The volume of an object in three dimensions is the area occupied within its boundaries. It is referred to as the object's capacity on occasion. The amount required to fill an object can be determined by finding its volume, for example, how much water is required to fill a bottle, aquarium, or water tank.

The most fundamental and frequent form of a three-dimensional shape is a sphere. We frequently encounter spheres in the form of balls, globes, decorative lights, oranges, etc.

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0.0102 moles Na₂CO₃ is  1.08g of Na₂CO₃ are necessaries .

Define Stoichiometry .

The quantitative study of the reactants and products involved in a chemical reaction .

What is a mole ?

A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.

How to calculate the molecular weight of a given compound ?

Count the number of atoms of each element, and then multiply that number by the element's atomic weight.

Based on the reaction :

CaCl₂ + Na₂CO₃ → 2NaCl + CaCO₃

1 mole of CaCl₂ reacts per mole of Na₂CO₃

Further we are suppose to calculate number of moles of CaCl2•2H2O present in 1.50 g.

To solve this question we must find the moles of CaCl2•2H2O using its molar mass (147.0146g/mol).

No. of moles = Moles CaCl₂ = Moles of Na₂CO₃ necessaries to reach stoichiometric quantities.

Then find then the mass we must use molar mass of Na₂CO₃ (105.99g/mol):

Moles CaCl₂.2H₂O:

1.50g * (1mol / 147.0146g) = 0.0102 moles CaCl₂.2H₂O = 0.0102moles CaCl₂

Moles Na₂CO₃:

0.0102 moles Na₂CO₃

Mass Na₂CO₃:

0.0102 moles * (105.99g / mol) =

1.08g of Na₂CO₃ are present

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The solubility of the potassium nitrate will increase as we increase the temperature because increases the kinetic energy of solute particles. More KNO₃ will dissolve in the solution and makes it unsaturated.

Solubility can be described as the maximum amount of Solute that can dissolve in a known quantity of solvent at a particular temperature. By changing the temperature we can increase the solubility of a solute. Sparingly soluble solids or liquids can be completely liquified by raising the temperature.

Solid solubility depends on the nature of the solute and the solvent. Substances such as sugar, common salt (NaCl), etc dissolve in water while substances such as naphthalene do not dissolve in water.

The solubility of potassium nitrate KNO₃ increases with an increase the temperature but the increasing temperature of NaCl solution does not show much change in the solubility of NaCl.

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Geometry around Carbon atom is Lewis structure

Assuming ideal gas, we calculate the number of moles.

PV = nRT

n = PV / RT

n = (1.10 atm) (10 x 10^-3L) / [(0.08205746 L atm / mol K) (289 K)]

n = 4.64 x 10^-4 mol

So, the molar mass is:

molar mass = 0.02877 grams / 4.64 x 10^-4 mol

molar mass = 62.02 g/mol

The only possible combination is : C2F2

C = 12 * 2 = 24

F = 19 * 2 = 38

24 + 38 = 62 g/mol

So, The molecular formula of C2F2 is 62g/mol

Lewis structure if C2F2 is attached below the answere;

What is molecular formula of compound?

The molecular formula of a molecular compound is a chemical formula that shows the number of different atoms present in a molecule. For example, in CO₂, the subscript under oxygen shows that there are two atoms of oxygen present, whereas the lack of subscript under carbon shows it has only one atom of carbon present.

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The following statement is not true is : a positron is the antiparticle of a proton .

The statement that are true is given below :

The positron also called as antielectron is the antiparticle of an electron. the electric charge of positron is +1 e.

Thus, the statement which is not true is  a positron is the antiparticle of a proton  because  a positron is the antiparticle of the electron.

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The bond angle is impacted by the presence of a lone pair of electrons at the core atom.

Why do some compounds have bond angles that deviate from expectations?

Several factors can lead to deviations from the optimum bond angles of a molecular form. The size of the involved atoms, the number of lone pairs, the number of bonds, the size of the groups attached to the central atom, and the environment in which the molecule is situated are just a few of the factors to consider.

What component(s) influences bond length and bond angle?

The length of the bond depends on how many electrons are bonded (the bond order). further bonds ordered,

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The volume of Hydrogen gas is 3.88L

The mass of aluminium = 3.12 g

Molar mass of aluminium = 26.98 g/mol

Calculating the number of moles -

Number of moles = Given Mass/Molar Mass

= 3.12/26.98

= 0.116 mol

Thus,

By Stoichiometry of the reaction:

Two moles of aluminium produce three moles of hydrogen gas. Thus,  0.116 moles of aluminium will produce -

= 3/2 × 0.116

= 0.173 mol

Calculating the volume of hydrogen gas produced by the equation -

PV = nRT

V = nRT/P

Using the standard temperature of gas = 273K

= 0.173 × 0.0821 × 273K/1 atm

= 3.88

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To neutralize 23.5 mL of a 0.145 M barium hydroxide solution, 23.9 mL of a 0.284 M hydrochloric acid solution is needed.

What does barium hydroxide serve?

Barium hydroxide is used to titrate weak acids, especially organic acids, in analytical chemistry. In contrast to the alkali hydroxides, barium carbonate creates clear, carbonate-free aqueous solutions because it is insoluble in water.

Acidity of barium hydroxide

When heated to 800 °C, barium hydroxide turns into barium oxide. Barium carbonate is produced when carbon dioxide reacts with it. Its strong base causes its extremely alkaline aqueous solution to go through neutralization reactions with acids.

Briefing:

The equation is given as:

Ba(OH)₂    +  2HCl     ------>   BaCl₂    +   2H₂O

from the equation it is clear that :

1mole of Ba(OH)₂  = 1 mole of HCl  

number of moles of Ba(OH)₂ = volume × Molarity

                          =  0.0235 × 0.145

                         = 0.0034 mol

Therefore, number of moles of HCl = 2× 0.0034 mol = 0.0068 mol

volue of HCl = moles / Molarity

                      = 0.0068 / 0.284

                       = 0.0239 L = 23.9 mL

Thus, The volume of a 0.284 M hydrochloric acid solution is required to neutralize 23.5 mL of a 0.145 M barium hydroxide solution is 23.9 mL.

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Answer: lightbulb, lamp, nightlight

Explanation:

The product of water and acetic anhydride is acetic acid.

What is acetic acid?

Acetic acid is also known as ethanoic acid, ethylic acid, vinegar acid, and methane carboxylic acid; it has the chemical formula of CH3COOH. It is the second simplest carboxylic acid.

Which chemical reaction involves the reaction of water and acetic anhydride?

Salicylic acid is reacted with an excess of acetic anhydride to produce aspirin. As a catalyst, a small amount of a strong acid is utilized, which speeds up the reaction. With the addition of water, the excess acetic anhydride will be quenched (reacted).

In this reaction, One equivalent of salicylic acid reacts with one equivalent of acetic anhydride to form aspirin. The reaction mixture still contains the residual acetic anhydride. Acetic anhydride is easily hydrolyzed during the work-up process to create acetic acid, which is freely soluble in water. The filtrate from the separation of crude aspirin will contain the leftover acetic anhydride that has been hydrolyzed to acetic acid.

The product of water and acetic anhydride is acetic acid.

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A) The proton chemically bonded to the chlorine is transferred to a water molecule and forms a chloride ion and a hydronium ion.

Proton include the H+ ion or the hydrogen atom's nucleus. Regardless of the isotope, each hydrogen atom has one proton, each helium atom has two, each lithium atom has three, and so on. A nose, throat, and eyes might get irritated when exposed to low amounts of chlorine. At greater concentrations, breathing chlorine gas may alter respiratory patterns, cause coughing, and harm the lungs. Chlorine exposure might cause serious additional symptoms. Chlorine exposure may be harmful to workers.

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Methanol and KCl are soluble in water. The maximum amount of a chemical that will dissolve in a given amount of solvent at a given temperature is referred to as its solubility.

N-hexane smells like petroleum and is a clear, colourless liquid. -9 °F flash points.

As a result of hydrogen bonds between methanol and water molecules, methanol is soluble in water.

Water readily dissolves KCl.

Ionic in nature, KCl can only dissolve in polar solvents like water. The adage "like dissolves like" can be used to generalise this. Because benzene is a nonpolar solvent, KCl cannot be dissolved in it.

Because they are soluble in organic solvents and are absorbed and transported similarly to fats, vitamins A, D, E, and K are referred to as fat-soluble vitamins.

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The maximum mass of NaCl that could be produced by chemical reaction is 14.03grams

What is Stoichiometry?

Stoichiometry is a branch of chemistry that includes determining desired quantitative data by exploiting relationships between reactants and/or products in a chemical process.

Stoichiometric challenges are grouped into various types:  Mass to mass conversion. Mass to moles conversion. Mole to mass steps conversion.

What is limiting agent?

The limiting reagent is the reactant that is totally consumed in a reaction, determining when the reaction comes to a halt. The exact amount of reactant required to react with another element can be estimated using reaction stoichiometry.

Given,

Mass of hydrochloric acid = 32.8 grams

Molar mass of hydrochloric acid (HCl)= 36.46 g/mol

Mass of sodium hydroxide = 9.7 grams

Molar mass of sodium hydroxide = 40.0 g/mol

According to the question, equation would be :

[tex]HCl + NaOH[/tex]  → [tex]NaCl + H_2O[/tex]

moles of HCl = Given mass of HCl / Molar mass of HCl

moles of HCl = 32.8 / 36.46 = 0.899 ≅ 0.90moles

moles of NaOH = Given mass of NaOH / Molar mass of NaOH

moles of NaOH  = 9.7 / 40.0 = 0.242 ≅ 0.24moles

Here, NaOH is a limiting factor, so it will be consumed completely. But moles of HCl are in excess.

So, only 0.24moles of HCl will be consume and remaining will be 0.90moles - 0.24moles = 0.66moles.

When 1 mol HCl react with 1 mol NaOH it produce 1 mol NaCl and 1 mol [tex]H_2O[/tex]

For 0.24moles of NaOH, we will have 0.24moles of NaCl

Maximum mass of NaCl = no. of moles of NaCl * molar mass of NaCl

mass of NaCl = 0.24 * 58.44 = 14.0256 ≅14.03grams

mass of NaCl ≅14.03grams

The maximum mass of NaCl that could be produced by chemical reaction is 14.03grams

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The changes that people can make to decrease emissions in the sectors that produce the most methane is to reduce the drilling for petroleum.

Methane is a hydrocarbon gas that is produced from the decomposition of plant matter in the absence of air.

Methane is a major constituent of natural gas that occurs in combination with petroleum.

Hence, methane gas is produced during the drilling of petroleum.

The release of methane gas into the atmosphere poses a major threat to the environment due to its effect on global warming.  This is because methane is much more powerful than carbon dioxide when it comes to holding heat and elevating temperatures.

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The hybridization of the oxygen atom labeled x in the structure below is sp2.

One s orbital and two p orbitals combine to generate three sp2 orbitals, each of which has 33% s character and 67% p character. This process is known as sp2 hybridization. When three groups of electrons surround an atom, this form of hybridization is necessary.

One electron in the s orbital is promoted to one of the 2p atomic orbitals as part of the sp2 hybridization, which is the mixing of one s and two p atomic orbitals. These two atomic orbitals combine to form three new hybrid orbitals that are equally energetic. The energy of the hybrid orbitals is higher than the energy of the s orbital, lower than the energy of the p orbitals, but closer to the energy of the p orbitals. Trigonal structures are produced by the newly generated hybrid orbitals, giving the molecule a 120-degree molecular geometry.

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A radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron.With some exceptions, these unpaired electrons make radicals highly chemically reactive.Organic radicals are stabilized by any or all of these factors: presence of electronegativity, delocalization, and steric hindrance.Organic radicals are inherently electron deficient thus the greater the electronegativity of the atom on which the unpaired electron resides the less stable the radical.Organic radicals are inherently electron deficient thus the greater the electronegativity of the atom on which the unpaired electron resides the less stable the radical.The greater the steric hindrance the more difficult it is for reactions to take place, and the radical form is favored by default.

The least stable radical is methyl radicals

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The equation that reflects combustion is the equation in Option B.

We know that a combustion reaction has to do with a kind of reaction that involves the burning of a substance in oxygen. As such, when the substance is burnt we have carbon dioxide and water produced.

In this case, we have to look at the equations as they have been written and then try to know which of them has to do with the burning of a substance in oxygen and this would be the  Option B. It is the burning of an organic compound.

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Answer:

Block A has the greatest density.

Explanation:

Three blocks are shown: Three blocks are shown.

Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and width 2 centimeters.

Block B has mass 1 kilograms, length 6 centimeters, height 2 centimeters, and width 4 centimeters.

Block C has mass 2 kilograms, length 2 centimeters, height 6 centimeters, and width 4 centimeters.

Which statement is correct?

- Block A has the greatest density.

- Block B has the greatest density.

- The density of Block A is equal to the density of Block B.

- The density of Block B is equal to the density of Block C

Chain fraction is styrene and unknown repeat units in an alternating copolymer, followed by each type of repeat unit. If the other is Styrene, a repeat unit of an alternating copolymer forms.

With the chemical formula C6H5CH=CH2, styrene is an organic substance. Although older samples may appear yellowish, this benzene derivative is an oily, white liquid. Although large concentrations have a less savoury flavour , the chemical readily evaporates and has a sweet smell of styrene. A copolymer is a polymer produced from more than one type of monomer in polymer science. Copolymerization is the process by which monomers are polymerized into copolymers. Bipolymers are the name given to copolymers created through the copolymerization of two monomer types. The formula for m is as follows: m = Mn / Dp m = 250000 / 3420 = 73.09g/mol.

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Barium-131's radiation level won't reach 1/4 of its initial level for 24 hours.

ln[A] t = -kt + ln[A] 0 is the integrated rate rule for the first-order reaction A's products.

A straight line is produced when the natural log of [A] is plotted as a function of time since this equation has the form y = mx + b.

How is the length of a half-life determined?

The amount of time needed for the reactant concentration to drop to half its initial value is known as the half-life of a reaction. A first-order reaction's half-life is a constant that is correlated with its rate constant:

t 1/2 = 0.693/k.

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According to Arrhenius definition a compound is an acid when, in aqueous solution it can releases protons. and  a compound is a base when, in aqueous solutions it can releases hydroxides anions.

According to Arrhenius, the acids are the hydrogen-containing compounds which give H+ ions or protons on dissociation in water and bases are the hydroxide compounds which give OH− ions on dissociation in water.

Arrhenius theory is only applicable only in the aqueous solution, for example, according to the Arrhenius theory, HCl is an acid in the aqueous solution but not in benzene, even though it donates H +  ion to the benzene. Also, under Arrhenius’s definition, the solution of sodium amide in liquid ammonia is not alkaline, even though amide ion deprotonates the ammonia.

So, for the acidic and basic properties, the presence of water is necessary.

This theory does not explain acidic and basic character of substances in non-aqueous solvents.

In case of HClO4 when it is subjected to dissociation it produces hydronium ion in the solution and hence it can be termed as an acid.

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If volumes are additive and the concentration is determined by molarity, the concentration of the diluted solution of magnesium chloride is 0.152M.

A measurement used to determine the concentration of chemical compounds in a solution is called molar concentration. It is defined with specific reference to the amount of solute in a solution. The most popular unit for measuring molar concentration is moles/liter.

The formula for calculating molar concentration is mass/molar mass divided by the volume of solution in liters.

Molar concentration is defined as the number of moles divided by the volume of the solution in liters when expressed in terms of moles.

Substitution in the formula is required if the volumes are additive.

M₁V₁=M₂V₂

M₂ = 0.550 ×40/145

M₂ = 0.152M.

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Water molecules are the species that also are created on this end of the cell. The total reaction is referred to as a redox reaction.

The research of the correlation of electrical electricity and chemical reactions is the focus of the branch of chemistry known as electrochemistry. Oxidation process are those in which electric currents are either generated or received.

The typical 1.5-volt cell, which powers numerous electrical devices like TV remote controls and clocks, is an illustration of an electrochemical cell. Copper ions or pv cells are those that may produce an electric current as a consequence of chemical reactions taking place inside of them.

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it is used to validate facts, estimates, and relationships.

The goal of quantitative research methods is to gather numerical data that can be used to quantify variables. The results of quantitative research are unbiased and conclusive because the data is statistically structured. It employs a grounded theory approach that depends on data collection and methodical analysis.

In contrast to qualitative research, which deals with words and meanings, quantitative research is concerned with figures and statistics. You can measure variables and test hypotheses systematically using quantitative methods. You can investigate ideas and experiences in greater detail using qualitative methods.

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A tertiary cyclohaloalkane is 1-bromo-1-methylcyclohexane. This indicates that it hinders carbon-1 sterically. As a result, committing to SN1 is more likely than SN2.

Describe carbon.

The number of protons six and letter C are attributed to the chemical element carbon. Four of its four available electrons can be used to create covalent chemical connections because it is a nonmetallic, tetravalent atom. The periodic table's group 14 includes it. Just 0.025 percent of the carbon on Earth is found in its crust.

What uses does carbon serve?

Coal, toxic gases, and crude oil are all utilized as fuel in it. It is employed to create a wide range of products, including polymers and steel alloys. Even black ink for printing or painting is produced with it.

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Answer: phytate i believe is the answer

The answer to the question is that a metals cools from 225°C to 25°C while releasing 160 j of thermal energy. The metal's specific heat becomes c = 0.16 J/g°c if its mass is 5.0 g.

A metal is a substance that exhibits a shiny appearance when freshly processed, polished, or shattered, and transmits both heat and electricity rather well.

Given:

T₁ = 225°C

T₂ = 25°C

q = -160 J

m = 5.0 g

As we know,

q = mcΔT

Now,

-160 = 5*c*(T₂-T₁)

-160 = 5*c*(25-225)

c = -160/5(-200)

c = 0.16 J/g°c

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In general, I was able to ID most of the compounds based on the materials and the images provided but not positively 100% because there are compounds that do not show up using only the NMR spectroscopy.

A compound is a substance made up of two or more components. Water, carbon dioxide, and table salt are examples of compounds.

In chemistry, a compound is a substance composed of two or more different chemical elements combined in a definite ratio. When elements come together, they react with each other to form unbreakable chemical bonds.

These bonds are formed when electrons are shared or exchanged between atoms.

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A sample in a spectrophotometer gives a percent transmittance of 37.5 %.  the absorbance of the sample is 0.425

Given that :

a percent transmittance = 37.5 %

The absorbance of the sample expression is given as :

Absorbance = - log (T)

where T = transmittance

Absorbance = - log ( percent transmittance / 100)

Absorbance = - log ( 37.5 / 100 )

Absorbance = - log (0.375 )

Absorbance = - ( -0.425 )

Absorbance = 0.425

Thus, the absorbance for the percent transmittance of 37.5 % is 0.425. the percent transmittance in the spectrophotometer is the percentage of light that passes through solution.

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The statement is incomplete so diagram can't be drawn for curved arrows to the reactant side of the given SN2 reaction to indicate the flow of electrons.

The product species to show the balanced equation, including nonbonding electrons and formal charges and to draw in the leaving group as well as the main organic product, and  show the lone pairs and formal charge on the leaving group.

In a covalent bond when a pair of valence electron remains unshared with another atom is referred to the Lone pair.

SN2 reaction is the type of mechanism in chemical reaction in which one bond is broken and other is done in one step.

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