a team of engineers has decided to design a new shoe for people suffering from a painful foot condition. What should the engineers do during the planning stage

Answer:

[tex]\boxed {\boxed {\sf 12.28 \ L}}}[/tex]

Explanation:

We are asked to find the volume of a gas given a change in pressure. Since the temperature remains constant, we are only concerned with volume and pressure. Therefore, we will use Boyle's Law, which states the volume of a gas is inversely proportional to the pressure. The formula for the law is:

[tex]P_1V_1= P_2V_2[/tex]

Initially, the gas sample's volume is 10.28 liters at 8.34 atmospheres of pressure.

[tex]8.34 \ atm * 10.28 \ L = P_2V_2[/tex]

Then, the pressure is lowered to 6.98 atmospheres, but the volume is unknown.

[tex]8.34 \ atm * 10.28 \ L = 6.98 \ atm * V_2[/tex]

We are solving for the new volume, so we must isolate the variable V₂. It is being multiplied by 6.98 atmospheres. The inverse operation of multiplication is division, so we divide both sides by 6.98 atm.

[tex]\frac{8.34 \ atm * 10.28 \ L}{6.98 \ atm} = \frac{6.98 \ atm * V_2}{6.98 \ atm}[/tex]

[tex]\frac{8.34 \ atm * 10.28 \ L}{6.98 \ atm} =V_2[/tex]

The units of atmospheres cancel.

[tex]\frac{8.34 * 10.28 \ L}{6.98 } =V_2[/tex]

[tex]\frac {85.7352}{6.98 } \ L =V_2[/tex]

[tex]12.28297994 \ L = V_2[/tex]

Let's round to the nearest hundredth. The 2 in the thousandths place tells us to leave the 8 in the hundredth place.

[tex]12.28 \ L \approx V_2[/tex]

The new volume at 6.98 atmospheres is approximately 12.28 liters.

Answer:

A

Explanation:

1-ethyl-4-methylcyclohexane

i believe it is A

hope that helped :)

Answer:

THR ANSWER IS C) _ methylpropanoate

Answer:

a) Freezing and condensation

Explanation:

please mark me as brainliest

Explanation:

Hey there!

Charles law states that the volume of gas is directly proportional to the absolute temperature at constant pressure.

As the fact is, at a constant pressure the volume of fix amount of dry gas is directly proportional to absolute temperature from Charles law.

Since V and T are directly varying directly, we can write the equation using constant "k".

V/T = k

In this case the value of k depends on the pressure of gas, the amount of gas and also unit volume.

V/T = k .........(i)

Let us consider V1 and T1 the Volume and temperature of the ideal gases.

Then the equation is;

V1/T1 =k........(ii)

After this let change the temperature and volume be T2 and V2, respectively.

Then the equation is:

V2/T2 = k.......(iii)

Now; Equating equation (ii) and (iii)…

V1/T1 = V2/T2

So, this the formula. (i.e V1/T1 = V2/T2).

Hope it helps!

Answer:

D. releases heat energy.​

Explanation:

In a REDOX titration, one specie is oxidized while the other is reduced. The concentration of methanol is 0.012  mol L-1. Methanol is the oxidizing agent while permanganate is the reducing agent.

The average titre value is; [tex]\frac{7.95 + 7.10 + 7.00 + 7.10}{4}[/tex] = 7.29 mL

Equation of the reaction is:

[tex]4MnO4- + 12H+ + 5CH3OH ----> 4Mn2+ + 11H2O + 5HCOOH[/tex]

Concentration of oxidizing agent = CA = ?

Concentration of reducing agent = CB = 0.0021 mol L-1

Volume of oxidizing agent =  VA= 7.29 mL

Volume of reducing agent = VB = 50.00 mL

Number of moles of oxidizing agent NA = 4

Number of moles of reducing agent NB = 5

Note that NA and NB are obtained from the balanced reaction equation

CAVA/CBVB = NA/NB

CAVANB = CBVBNA

CA =  CBVBNA/VANB

CA = 0.0021 mol L-1 * 50.00 mL * 4/7.29 mL * 5

CA= 0.012  mol L-1

For a comprehensive definition of redox titration see

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Answer:

here's your answer

Explanation:

Molar mass of CH3CH2OH = 46.06844 g/mol

This compound is also known as Ethanol.

Convert grams CH3CH2OH to moles  or  moles CH3CH2OH to grams

Molecular weight calculation:

12.0107 + 1.00794*3 + 12.0107 + 1.00794*2 + 15.9994 + 1.00794

Percent composition by element  

Hydrogen H 1.00794 6 13.128%

Carbon C 12.0107 2 52.143%

Oxygen O 15.9994 1 34.730%

The mass percentage of C in CH₃CH₂OH is 52.14% (to two decimal places)

To calculate the mass percentage of C (Carbon) in CH₃CH₂OH (Ethanol),

First, we will determine the mass of CH₃CH₂OH

Molar mass of CH₃CH₂OH = 46.07 g/mol

Mass of C = 12.01 g/mol

Now, for the mass percentage of C in CH₃CH₂OH,

We will determine the ratio of the total mass of C to the mass of CH₃CH₂OH, and then multiply by 100%

Since we have 2C in CH₃CH₂OH

Then, total mass of C in CH₃CH₂OH = 2 × 12.01 g/mol = 24.02 g/mol

That is,

Mass percentage of C in CH₃CH₂OH = [tex]\frac{24.02}{46.07} \times 100\%[/tex]

Mass percentage of C in CH₃CH₂OH = 0.5213805 ×100%

Mass percentage of C in CH₃CH₂OH = 52.13805%

Mass percentage of C in CH₃CH₂OH ≅ 52.14%

Hence, the mass percentage of C in CH₃CH₂OH is 52.14% (to two decimal places)

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Answer:

B

Explanation:

Frequency and wavelength are inversely proportional

Answer:

Calcium is a chemical element with the symbol Ca and atomic number 20.

Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth.

Answer:

The magnetic field shows (D)

Explanation:

Because like poles repel eachother

The magnetic field is represented by two poles of a magnetic with magnetic filed lines from the poles. The image C represents the magnetic filed .

A magnetic filed is a generated by strong filed lines from a magnet with two poles. A magnet have two poles namely magnetic south and north poles.

The magnetic south poles of of a magnet is always attracted towards the magnetic north poles. Magnetic north poles of a magnet is generally shown in the left side and the field lines will be outward towards the geographic north pole.

The magnetic field lines from the south pole is inward and attracted towards the north. Therefore, right figure representing the magnetic filed is option C.

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#SPJ2

Answer:

the accleration is decreasing

Explanation:

I hpe so

Answer:

the acceleration is increasing

Explanation:

I took a test with a question that was phrased like this, so I'm assuming (hoping) that it's the same graph

Answer:

option (A) is right answer

Answer:

c

Explanation:

trust me I took the exam

Answer:

It has denatured

Explanation:

When the temperature get high the enzymes tend to change shape and denaturing occurs.

Answer:

Crop rotation

Explanation:

The growing of different crops in succession on a piece of land to avoid exhausting the soil and to control weeds,pets,and diseases

Answer:

It would look bigger and brighter

Explanation:

It would look bright as sunlight

Answer:

Explanation:

True

Answer:

Explanation:

Balance the OHs first. There's 3 on the right.

FeC13 + 3NaOH -> NaCl + Fe(OH)3

Now balance the Nas. There are 3 on the left.

FeC13 + 3NaOH -> 3NaCl + Fe(OH)3

The equation is now balanced

Chemical         Left         Right

Fe                      1              1

Na                     3             3

Cl                      3             3

OH                   3              3

Answer:

Covalent bonding and non-covalent bonding

Answer:

A. High electrical conductivity

Explanation:

solid silver isn't brittle, it has a high melting point, and its not a good insulator.

Answer:

The difference between a rock and a boulder can be explained in terms of size and detachment. A rock is defined by geologists as an aggregate of minerals. A boulder is a type of rock, specifically a large detached one. All boulders are rocks, but not all rocks are boulders.

Answer:

Cold blooded animals are animals which stay in water

Explanation:

Examples are;snakes,tortoises,turtles,crocodiles,alligators

Answer:

OPTION C

Explanation:

AS IN HUMANS THE DNA COMES FROM BOTH MALE AND FEMALE-SPERM AND OVA . SO 23 CHROMOSOMES FROM FATHER AND 23 CHROMOSOME FROM MOTHER

Answer:

(i). C6H2COOH and Na2CO3(aq)

observation: Bubbles of a colourless gas (carbon dioxide gas)

(ii) CH3CH2CH2OH and KMnO4 /H

observation: The orange solution turns green.

[This is because oxidation of propanol to propanoic acid occurs]

(iii) CH3CH2OH and CH3COOH + conc. H2SO4

observation: A sweet fruity smell is formed.

[This is because an ester, diethylether is formed]

(iv) CH3CH = CHCH3 and Br2 /H2O

observation: a brown solution is formed.

Answer:

The answer is attached below

Explanation:

The answer is the photo attached

Answer:

when equal moles of an acid and base are mixed,after reaction the two are compounds are said to be at the Equivalent point.

The predominant consequence to an individual who is genetically deficient in liver fructose 1,6-bisphosphatase would be failure to resynthesize glucose from lactic acid.​

WHAT IS FRUCTOSE 1,6-BISPHOSPHATASE:

CONSEQUENCES OF DEFICIENCY OF FRUCTOSE 1,6-BISPHOSPHATASE:

Therefore, the predominant consequence to an individual who is genetically deficient in liver fructose 1,6-bisphosphatase would be failure to resynthesize glucose from lactic acid.​

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