Which of the following is an example of how prosthetics engineering differs
from most other engineering fields?
A. Designing a device that is biologically compatible
B. Use of the engineering process to design
C. Predicting how the device will fail
D. Using a material that is sufficiently strong

Answer: V2= 41.2mL

Explanation:

Givens:

* V1= 20ml

* T1 = -109 ⁰C --> K= ⁰C + 273.15 --> 164.15 K

* V2 = ??

* T2= 338.15 K

Use Charles law V1/T1 = V2/T2

Since we are looking for V2 we can rearrange the formula to

V2= (T2 x V1) /T1

V2= (338.15K x 20mL) / 164.15 K

V2= 41.2mL

NOTE:

Temperature should always be in K not in ⁰C or ⁰F

To convert from C to K use

*K= ⁰C + 273.15

Enter your C value in the ( ⁰C ) and you can get K

During all chemical reactions, the mass of the products is never equal to the mass of the reactants.

- FALSE

Mass is sometimes lost in chemical reactions.

- FALSE

The Law of Conservation of Mass states that mass is not conserved.

- FALSE

The seasons effect the rate of increase of a canine's coat. The longer sunlight hours stimulate fur increase withinside the lighter summer time season months, so hair grows quicker than withinside the colder, darker months.

These durations of introduced losing generally begin all through the spring and fall whilst the climate shifts. As such, puppies may also shed greater withinside the wintry weather due to the fact they are dropping their summer time season coat and developing of their more fluffy wintry weather layer. During the fall, your canine is getting equipped for wintry weather. This method that they may take away their skinny summer time season coat and regrow a wealthy and thick undercoat to shield them from low temperatures. So the distinction among canine wintry weather and summer time season coats is that wintry weather coats are thick whilst summer time season coats are skinny.

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Answer:

They have two valence electrons and enter into reactions where they can donate their two valence electrons

Explanation:

Here, we want to predict the number of valence electrons

The elements belong to the group 2 of the periodic table

Elements in the periodic table are placed in groups based on the number of valence electrons they have

It is expected that elements in group 2 of the periodic table have 2 valence electrons

Their reactivity is that, they react with other atoms by donating this two valence electrons. They then achieve the electronic configuration of the noble gas in the last period

Answer:

Prosthetic Devices

Explanation:

I’m a genius and it’s the answer :D

The Statement "All colors are transmitted through the drink except for blue which is absorbed by the drink." is correct on what happens to a light as it passes through a blue drink.

Light is a form of electromagnetic radiation that is visible to the human eye. It is a type of energy that travels through space in the form of waves and does not require a medium to propagate. Light is produced by the movement of charged particles and travels at a constant speed of about 299,792,458 meters per second in a vacuum.

When light passes through a blue drink, the liquid absorbs the blue portion of the spectrum and allows the other colors to pass through. This is because the blue pigment in the drink selectively absorbs the blue portion of the spectrum, which is why we perceive the liquid as blue. The other colors in the visible spectrum are transmitted through the drink and are not affected.

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The C–O bond is broken when ethers are cleaved with aqueous hydroiodic acid, and two halogen atoms are added to the ether.

When cleaved with HI, the structure(s) of the product(s) you would expect is shown below:

HI can be used to cleave ethers. The C–O bond is broken when ethers are cleaved with aqueous hydroiodic acid, and two halogen atoms are added to the ether. If more than one ether cleavage product is feasible, all of them must be illustrated. The reaction of an ether with hydroiodic acid produces an alcohol and an alkyl iodide:

ROR' + 2HI → R–I + R'–OH. If there is a hydroxyl group on the carbon to which the iodine is attached, the alcohol is referred to as an iodohydrin.

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The statement “the yeast engages in photosynthesis, which produces oxygen gas” is incorrect. Yeast cells do not engage in photosynthesis to produce oxygen gas.

Photosynthesis is the process by which green plants use sunlight, carbon dioxide, and water to produce glucose (a simple sugar), which serves as food for the plant.

Oxygen is also produced during photosynthesis.Yeast:Yeast is a unicellular fungus that converts sugar into carbon dioxide and alcohol. Yeast cells respire aerobically in the presence of oxygen and anaerobically in the absence of oxygen.

However, yeast cells do not perform photosynthesis. They do not have chloroplasts or pigments that are required for photosynthesis. Therefore, yeast cells cannot produce oxygen gas.Bio quizlet:Quizlet is an online learning platform that allows users to create and share flashcards, study guides, and quizzes.

It is a great resource for studying biology and other subjects. Students can create their own study materials or use existing ones created by other users. Quizlet provides an engaging and interactive way to learn and retain information.

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Answer:

C

Explanation:

they are of same element but different mass no.

in chemistry language we call them isotopes

To answer if a salt is formed between the reaction of a base and an acid, we need to remember that, if we react a strong acid and a strong base, such as HCl and NaOH, two products will be formed: the appropriate salt and water.

In the example above, we can write the reaction as:

HCl + NaOH -> NaCl + H2O

where a strong acid and a strong base react to form a salt (NaCl) and water (H2O).

Thus, we can say that, yes, a salt is formed when an acid and a base react between each other.

Answer:

19.5

Please tell me if wrong.

When a car uses a gallon of gas, 22.0 miles per gallon of carbon dioxide is emitted into the environment.

After being released into the atmosphere, carbon dioxide (CO₂) is initially quickly dispersed among the atmosphere, the upper ocean, and plants.

The sources of carbon dioxide emissions include both natural and human activities. Decomposition, oceanic discharge, and respiration are examples of natural sources.

The annual carbon dioxide emissions from a typical passenger automobile are around 4.6 metric tonnes. This estimates that the typical gasoline car on the road today gets roughly 22.0 miles per gallon of fuel and travels about 11,500 miles annually.

Thus, 22.0 miles per gallon of carbon dioxide is emitted into the environment.

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Option b-A The isotope ⁷₂H (7He) is more tightly bound than ⁵₂H (5He).

The stability of an isotope depends on its binding energy, which represents the amount of energy required to break apart the nucleus into its constituent particles. Higher binding energy indicates greater stability and tighter binding of nucleons within the nucleus.

To determine which isotope is more tightly bound, we compare their binding energies. The binding energy is related to the mass defect, which is the difference between the sum of the masses of the individual nucleons and the actual mass of the nucleus.

In this case, the atomic mass of ⁷₂H (7He) is 7.027991 u, and the atomic mass of ⁵₂H (5He) is 5.012057 u. The greater the mass defect, the more tightly bound the nucleus. Since the mass defect of ⁷₂H (7He) is greater than that of ⁵₂H (5He), it implies that ⁷₂H (7He) has a higher binding energy and is more tightly bound.

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Mg + HCl  → MgCl2 + H2. Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas.

Thus, Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas and magnesium chloride salt when it combines with diluted hydrochloric acid.

The gas produced by the reaction of magnesium with diluted HCl is hydrogen gas. The gas produced by the reaction of magnesium with diluted HCl is hydrogen gas.

The experiment produces very flammable hydrogen gas. No ignition source should be available to students.

Thus, Mg + HCl  → MgCl2 + H2. Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas.

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Answer: ≈ 67.4 g

Explanation:

A(t) = amount remaining in t years        = A0ekt, where A0 is the initial amount and k is a constant to                     be determined.   Since A(1690) = (1/2)A0 and A0 = 80,                   we have 40 = 80e1690k                  1/2 = e1690k                  ln(1/2) = 1690k                  k = -0.0004 So, A(t) = 80e-0.0004t  Therefore, A(430) = 80e-0.0004(430)                             = 80e-0.172                             ≈ 67.4 g

Answer:

the number of chlorine  molecules  in  6.5  moles  of  chlorine  is  calculated  as  follows

by  use  of Avogadro  constant  that  is  1mole =  6.02  x10^23    molecules

what  about  6.5  moles

6.5  x  (  6.02x 10^23)=  3.913  x10^24

The ranking from greatest to least number of moles at STP would be: 1. Nitrogen gas (since it has the largest volume of gas at STP), 2. Helium gas (since it has a smaller volume but still more moles than oxygen). 3. Oxygen gas (since it has the smallest number of moles despite its smaller volume)

the gases based on the number of moles at STP. We'll use the Ideal Gas Law (PV=nRT) and the STP conditions (1 atm pressure, 273 K temperature).

1. First, we'll find the number of moles for each gas.

For helium: n = PV/RT
- Given: P = 1 atm, V = 30 L, R = 0.0821 L*atm/(mol*K), T = 273 K
- n(He) = (1 * 30) / (0.0821 * 273) ≈ 1.34 moles

For oxygen: n is already given - 0.5 moles

For nitrogen: n = PV/RT
- Given: P = 1 atm, V = 67.2 L, R = 0.0821 L*atm/(mol*K), T = 273 K
- n(N₂) = (1 * 67.2) / (0.0821 * 273) ≈ 2.99 moles

2. Rank the gases by the number of moles:
- Nitrogen (2.99 moles) > Helium (1.34 moles) > Oxygen (0.5 moles)

So, the ranking from greatest to least number of moles at STP is Nitrogen, Helium, and then Oxygen.

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Answer:

D... I think? Because it is unsaturated so there is more solute than solvent...

The molar volume of Ne gas will be 21.44 L.

We know that, according to Ideal Gas law:

PV = nRT

Where,

P = pressure, V = volume, n = no. of moles of gas, R = gas constant,

T = temperature

On the other hand,

D = PMb/RT ...1

Where, D = density, Mb = molar mass

PV = nRT can also be written as V = n(RT/P) ....2

From equation 1, we can find RT/P which is equal to Mb/D

So, RT/P = Mb/D

Now put this value in equation 2

Therefore, V = n(Mb/D) ......3

V = Vm = molar volume

n = 1 mole

molar mass, Mb of Ne is 20.180gm

density, d is given 0.941g/l

Now on putting all the values in equation 3, we get:

Vm = n(Mb/D)

Vm = 1(20.180/0.941)

Vm = 21.44 L

Therefore, molar volume of Ne gas will be 21.44 L.

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Ionic compounds dissolve easily in water because water is a polar molecule.

The positive and negative charges on the water molecule are attracted to the negative and positive ions in the ionic compound, respectively. This attraction pulls the ions away from each other and causes the ionic compound to dissolve. Additionally, the ions are surrounded by water molecules, which keeps them from recombining and helps the ionic compound to dissolve easily.

The process of dissolving an ionic compound in water is called dissociation, and it results in the formation of individual ions that are surrounded by water molecules. These ions are free to move around in the water, which is why ionic compounds dissolve easily in water.

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Answer: Neon is one of the Noble gases and are unreactive

Explanation: they are Unreactive because their outer shells (Valency ) are full thus making them stable so they do not need to loose or gain any electron

HOPE THIS HELPS if u need any more explanation comment in the comment section

The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

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The standard emf of the  voltaic cell based on Ag+(aq)/Ag(s) and Fe3+(aq)/Fe2+(aq) half-cells is 0.03 V.

To determine the reactions at the cathode and anode, we need to know the standard reduction potentials of the given half-cells. The standard reduction potentials are as follows:

Ag+(aq) + e- → Ag(s) E° = +0.80 V
Fe3+(aq) + e- → Fe2+(aq) E° = +0.77 V
Since the higher reduction potential will occur at the cathode and the lower one at the anode, we have:
Cathode reaction: Ag+(aq) + e- → Ag(s)
Anode reaction: Fe3+(aq) + e- → Fe2+(aq)
The cathode reaction involves the reduction of silver ions to silver metal, and the anode reaction involves the reduction of ferric ions to ferrous ions. And the standard emf of the cell is:

E°cell = E°cathode - E°anode

E°cell = +0.80 V - (+0.77 V)

E°cell = 0.03 V

In this voltaic cell, the cathode reaction is Ag+(aq) + e- → Ag(s), and the anode reaction is Fe3+(aq) + e- → Fe2+(aq). The standard emf of the cell is 0.03V.

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A voltaic cell is based on Ag+(aq)/Ag(s) and Fe3+(aq)/Fe2+(aq) half-cells. The cathode reaction is \(Ag^+(aq) + e^{-}\ - > Ag(s)\) and the anode reaction is \(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\).

Determine the cathode and anode reactions

To determine the cathode and anode reactions in the voltaic cell based on the \(Ag^+(aq)/Ag(s)\ and\ Fe^{3+}(aq)/Fe^{2+}(aq)\) half-cells, we need to compare the reduction potentials of each half-reaction. The reaction with the higher reduction potential will occur at the cathode (where reduction takes place), while the reaction with the lower reduction potential will occur at the anode (where oxidation takes place).

The standard reduction potentials for the half-reactions are as follows:

\(Ag^+(aq) + e^{-}\ - > Ag(s) \ \ \ \ \ \ \ \ E\° = +0.80 V\)

\(Fe^{3+}(aq) + e^{-} \ - > Fe^{2+}(aq) \ \ \ \ \ \ \ \ E\° = +0.77 V\)

Since the standard reduction potential for \(Ag^+(aq)/Ag(s)\) is higher than that of \(Fe^{3+}(aq)/Fe^{2+}(aq)\), the \(Ag^+(aq)/Ag(s)\) half-reaction will occur at the cathode (reduction) and the \(Fe^{3+}(aq)/Fe^{2+}(aq)\) half-reaction will occur at the anode (oxidation).

A.) Cathode reaction:

\(Ag^+(aq) + e^{-}\ - > Ag(s)\)

B.) Anode reaction:

\(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\)

It's important to note that the oxidation half-reaction is typically written in the reverse direction (as an oxidation) to emphasize the loss of electrons.

Therefore, the cathode reaction is \(Ag^+(aq) + e^{-}\ - > Ag(s)\) and the anode reaction is \(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\).

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97.6% of the molecules in the mixture are monatomic. The specific heat ratio y is defined as the ratio of the heat capacity at constant pressure to the heat capacity at constant volume, and it is related to the degrees of freedom of the molecules in the gas.

For a monatomic gas, each atom has three degrees of freedom (translational motion in three directions), while for a diatomic gas, each molecule has five degrees of freedom (three translational and two rotational). Therefore, the specific heat ratio for a mixture of monatomic and diatomic gases can be expressed as:

y = (f1 + f2) / (f1 + (5/3) * n2)

where f1 and f2 are the degrees of freedom of the monatomic and diatomic gases, respectively, and n2 is the fraction of diatomic molecules in the mixture. Rearranging this equation, we can solve for n2:

n2 = (3 * (y - 1) - f1) / 5

Since we know that y = 1.62, we need to determine the degrees of freedom of the monatomic gas, f1. Since each atom has three degrees of freedom, we can assume that the monatomic gas has f1 = 3. Plugging in these values, we get:

n2 = (3 * (1.62 - 1) - 3) / 5 = 0.024

Therefore, the fraction of diatomic molecules in the mixture is 0.024, which means that the fraction of monatomic molecules is:

1 - n2 = 1 - 0.024 = 0.976

So, approximately 97.6% of the molecules in the mixture are monatomic.

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Explanation:

Hydrogen bonding, present in alcohols but not hydrocarbons, leads to strong intermolecular forces and increases the boiling point significantly.

For example:

Glycerol has 3 OH groups, which lead to a much more extensive hydrogen-bonding network and a higher boiling point compared to the 1 OH or 2 OH in other chains.